# How Can You Predict When Severe Weather Will Occur?

Save this PDF as:

Size: px
Start display at page:

## Transcription

1 4.7 Explain How Can You Predict When Severe Weather Will Occur? In this Learning Set, you have been exploring how winds and oceans affect weather and climate. You then used what you know to explain how all the factors that you have been investigating can help you predict weather. However, for the Big Challenge, you will need to be able to predict in advance if severe weather will occur. Unless you know that there will be severe weather, you cannot prepare for it adequately. Before you can make any predictions about severe weather, you need to know a little more about the different types of severe weather. The following reading provides you with information about severe weather events. As you read, make notes on the following: the type of severe weather event that can occur the factors that determine if this is a severe weather event how fronts are involved the type of clouds that are associated with the severe weather the dangers involved with the severe weather event WW 230

2 4.7 Explain Severe Weather Severe weather can cause tremendous damage and loss of life. Consider Hurricane Katrina, which struck the central Gulf Coast states in August Katrina was the most destructive hurricane to strike the United States to date, devastating the cities of New Orleans, Louisiana; Mobile, Alabama; Gulfport, Mississippi; and surrounding areas. The storm s winds reached 190 km (120 mi) from the storm s center. Wind speeds were as high as 210 km/h (130 mph). By the time it was over, an estimated 1836 people had lost their lives. Damages were estimated at \$81.2 billion. This storm had tremendous social, economic, and political effects on the country. The loss of life and the damage would have been even greater if meteorologists had not been able to predict that the massive storm would strike near New Orleans. Because they predicted that a storm was coming, many people left the affected areas before the storm arrived. Meteorologists know that severe weather often results when there are large differences in the air pressure of colliding air masses. Because the atmosphere is complex, however, they cannot always make exact predictions. Small variations in pressure and changes in wind can cause unexpected effects. The predictions that meteorologists make are based on data collected over many years. They know that certain conditions make severe weather likely. When conditions indicate that severe weather is possible, the National Weather Service will issue a watch alert, for example a tornado watch. When severe weather has been spotted or is considered likely to occur soon, the alert is upgraded to a warning, for example a tornado warning. These alerts are issued by NOAA weather radio reports and by announcements at the NOAA and National Weather Service Internet sites. WW 231 WEATHER WATCH

3 Snowstorms, like rainstorms, are caused when moist air is pushed upward. Rainstorms and Snowstorms You know that rainstorms and high winds can occur when air masses collide at fronts. Storm clouds also form when two fronts collide at an occluded front. When a warm front meets a cold front, rainstorms or snowstorms can result. In the summer, light or moderate rain can fall for several days at a stationary front. On the other hand, if a cold front is moving rapidly, it can push huge masses of warm air rapidly into the higher levels of the troposphere. When this happens, heavy rains can occur suddenly, dropping large amounts of water in a very short time. As this water collects in low areas, it may not drain away as more water flows in. The National Weather Service sometimes issues flash flood alerts when conditions indicate that a sudden storm might occur. Meteorologists look at water table levels to predict flash floods. A water table indicates the depth of groundwater that moves under the ground. When the water table is low, much of the rain that falls can be absorbed by the ground, so a severe amount of rain may not produce flooding. But large amounts of rain combined with high levels of the water table can lead to flash floods. For coastal storms, meteorologists also consider the tides. At high tide, coastal flooding is much more likely than at low tide. Another alert that the National Weather Service might issue is a winter weather advisory or warning. Snowstorms are similar to rainstorms that occur at lower temperatures. Like rainstorms, snowstorms are caused when moist air is pushed upward. The rising water vapor cools and forms crystals of ice. These crystals often fall as snow. Depending on temperatures in different parts of the atmosphere, precipitation can also fall as hail, sleet, or freezing rain. Each form of precipitation can cause problems if it occurs in great amounts very quickly. In the winter, heavy snowfalls can produce dangerous travel conditions and lead officials to close schools and businesses. WW 232

4 4.7 Explain Meteorologists use several factors to determine when a snowstorm will arrive and how much snow will accumulate. Some fronts move at a steady, predictable speed. The speed of the front can be used to calculate when the storm will arrive. A fast-moving front will pass through an area quickly, so there may be less precipitation compared to a storm produced by a slow-moving front. However, if a storm covers a larger area, it may produce large amounts of rain or snow even though the storm is moving quickly. Blizzards A blizzard is a severe weather event involving low temperatures, strong winds, and heavy snow. The key factor that separates a blizzard from other snowstorms is a steady wind of 56 km/h (35 mph). Blizzards occur in winter when large pressure differences produce strong winds combined with heavy precipitation. In a blizzard, snow carried by the wind reduces visibility so that you can see no farther than 400 m (.25 mi) for at least 3 hours. Sometimes, an event similar to a blizzard can occur without precipitation because the wind blows snow that is already on the ground. These events usually occur in places that have large, open, flat areas of land. Blizzards are dangerous for several reasons. Traveling by vehicle is difficult because the blowing snow makes it hard to see other cars and trucks. Ice and snow make roads and sidewalks slippery. Also, blizzards pose a risk for people who do not have access to shelter. The combination of low temperatures and high winds can cause your body to lose heat rapidly. Any exposed skin can quickly be damaged by frostbite. Blizzards, like ice storms, can bring down power lines and cause power failures. This is most likely when the snow is wet and heavy. Repair crews may have trouble reaching damaged areas until roads are safe for travel. Ice storms occur when rain falls and then freezes immediately on trees, on cars, and on power lines. Because so many power lines can be damaged, it may take weeks to restore power to hundreds of thousands of people. Blizzards can dump more than a foot of snow in less than 24 hours. WW 233 WEATHER WATCH

5 One type of weather pattern meteorologists look for in predicting blizzards is called a Nor easter (or Northeaster). This is a large storm system off the east coast of the United States with winds that come from the northeast. The winds bring cold air from the north, and they also pick up moisture from the Atlantic Ocean and bring it inland. As the storm rotates counterclockwise, the ocean keeps feeding the storm with additional moisture that leads to heavy accumulations of snow. Meteorologists watch the track of the storm. If the storm moves inland, it will produce less snowfall because it runs out of moisture. This kind of storm can produce precipitation for 24 hours or longer. Stop and Think 1. What factors cause rainstorms and snowstorms? 2. What factors cause damage in a rainstorm? 3. How are blizzards different from snowstorms? 4. How do meteorologists predict that a blizzard is coming? 5. What are three dangers posed by blizzards? Lightning is more likely to strike in some areas of the country. On this map, constructed from satellite images and data, the areas in red are most likely to experience lightning strikes. WW 234

6 4.7 Explain Thunderstorms Thunderstorms are heavy rainstorms with lightning and thunder. They usually develop at a cold front where a fast-moving cold air mass pushes a warm air mass up very rapidly. Cumulus clouds are formed. As more warm air rises, the developing cumulonimbus cloud grows larger and taller. The rising air, called an updraft, feeds more and more moisture into the cloud. Eventually, the cloud can no longer contain all the water droplets and ice crystals. Heavy rain or hail falls to Earth s surface. As the precipitation falls, it causes air to rush downward in downdrafts. Because air is rushing both up and down, the water droplets and ice crystals collide frequently. This shifts electrical charges within the cloud. A cloud has a positive area (near the top) and a negative area (near the bottom). When too much negative charge builds up in one area of the cloud, it can travel to a place with a less negative charge as lightning. The sound associated with lightning is called thunder. Lightning bolts can travel from cloud to cloud. They can also travel from a cloud to the ground. Lightning can even travel from the ground to a cloud! Although a storm may be local, lightning can travel great distances before striking the ground. Lightning also can occur after the rain stops if excess electrical charges have not been released. These are just a few reasons that lightning can be very dangerous and unpredictable. A single cloud can produce a thunderstorm, but cumulonimbus clouds often occur in a cluster of clouds that stretches along a cold front. The thunderstorm produced by a single cloud might last only 30 minutes, but when a cluster of clouds passes through an area, there may be thunderstorms for many hours. Thunderstorms are difficult to predict precisely because the clouds form so quickly, so the storm cannot be seen coming from miles away. These storms are most likely to occur in spring and summer, and they are also more likely in the afternoon or early evening. WW 235 WEATHER WATCH

8 4.7 Explain Tornadoes are difficult to predict for the same reasons that thunderstorms are difficult to predict. Tornadoes, like thunderstorms, do not last a long time, and they also cover a small area. To make predictions, meteorologists use radar to detect strong updrafts in thunderstorms. They also look for certain types of clouds, such as the mammatus clouds shown in the photograph on the previous page. When meteorologists see conditions that may produce tornadoes, they issue alerts and warnings to help the public prepare in case these devastating events do take place. Hurricanes Hurricanes form over the ocean. For a hurricane to develop, the ocean waters must have a surface temperature of at least 81 F. At this temperature, warm moist air can rise very quickly, creating a lowpressure area. You have read that air tends to move from areas of high pressure to areas of low pressure. Cool high-pressure air rushes in to the low-pressure region formed by the rising warm air. The cool air causes water vapor to condense, which typically leads to the formation of a ring of thunderstorms. Hurricanes are most common during summer and early fall, when the right conditions are most likely. The conditions that lead to hurricanes include a lot of solar heating and a lot of moisture in the air. That is why hurricanes form over tropical oceans. Warm seawater evaporates and the warm air above the water rises because it is now less dense than the air above it. A column of low-pressure air forms. Winds increase as air rushes into the low-pressure area. The Coriolis effect causes Hurricanes are generally about 500 km (300 mi) across, but they can be as large as 1100 km (675 mi) in diameter. WW 237 WEATHER WATCH

9 the storm to start to rotate. As the low-pressure area in the center of the circling winds passes over more warm water, more water evaporates and rises into the storm, which keeps the pressure low and the winds strong. Hurricanes in the Northern Hemisphere usually begin by traveling from east to west. As the storms approach the coast of North America, they shift to a more northerly direction. In the Southern Hemisphere, the storms also may travel westward at first, but then they generally shift toward the south. The path of an individual hurricane is irregular and often difficult to predict. Hurricanes eventually move toward higher latitudes, where there is cooler air and water and less moisture. Under those conditions, the storm weakens. If the hurricane moves over land, it will die out quickly because it no longer has a steady source of heat and water vapor. Heavy rains, thunderstorms, and even tornadoes may continue even after the storm weakens and is no longer classified as a hurricane. Meteorologists take many factors into account to make predictions about hurricanes. They use computer simulations to compare the current storm to tropical storms and hurricanes that developed in the past under similar conditions. They plot the track of the storm and determine its size. They enter other data into the computer simulations, including air temperature, ocean temperatures, air pressure, humidity, and wind speeds. Because hurricanes affect such large areas, hurricane forecasts can save more lives than forecasts for any other type of severe weather event. Stop and Think 1. What kinds of clouds are associated with thunderstorms? How do updrafts contribute to the growth of these clouds? 2. Why do thunderstorms produce lightning? 3. What dangers do thunderstorms pose? 4. Under what conditions do tornadoes form? 5. Under what conditions do hurricanes form? How does the formation of hurricanes differ from the formation of tornadoes? 6. How are thunderstorms, tornadoes, and hurricanes alike? How do they differ? 7. How do meteorologists know if a thunderstorm, tornado, or hurricane is coming? WW 238

### How Do Oceans Affect Weather and Climate?

How Do Oceans Affect Weather and Climate? In Learning Set 2, you explored how water heats up more slowly than land and also cools off more slowly than land. Weather is caused by events in the atmosphere.

### Storms Short Study Guide

Name: Class: Date: Storms Short Study Guide Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. A(n) thunderstorm forms because of unequal heating

Severe Weather Tornado Tornado A tornado (aka twister) is a violently rotating column of air (wind vortex) that is in contact with both the Earth surface and a cumulonimbus cloud or, in rare cases, the

### 2. The map below shows high-pressure and low-pressure weather systems in the United States.

1. Which weather instrument has most improved the accuracy of weather forecasts over the past 40 years? 1) thermometer 3) weather satellite 2) sling psychrometer 4) weather balloon 6. Wind velocity is

### Severe Weather. www.readinga-z.com. Visit www.readinga-z.com for thousands of books and materials.

Severe Weather A Reading A Z Level T Leveled Reader Word Count: 1,801 LEVELED READER T Written by Bruce D. Cooper Illustrations by Cende Hill Visit www.readinga-z.com for thousands of books and materials.

### WEATHER AND CLIMATE practice test

WEATHER AND CLIMATE practice test Multiple Choice Identify the choice that best completes the statement or answers the question. 1. What role does runoff play in the water cycle? a. It is the process in

### Name Period 4 th Six Weeks Notes 2015 Weather

Name Period 4 th Six Weeks Notes 2015 Weather Radiation Convection Currents Winds Jet Streams Energy from the Sun reaches Earth as electromagnetic waves This energy fuels all life on Earth including the

### THIRD GRADE WEATHER 1 WEEK LESSON PLANS AND ACTIVITIES

THIRD GRADE WEATHER 1 WEEK LESSON PLANS AND ACTIVITIES WATER CYCLE OVERVIEW OF THIRD GRADE WATER WEEK 1. PRE: Comparing the different components of the water cycle. LAB: Contrasting water with hydrogen

### THUNDER STORMS AND LIGHTNING. By: Kyle Clearly, Zach Weissinger, Nick Reimer

THUNDER STORMS AND LIGHTNING By: Kyle Clearly, Zach Weissinger, Nick Reimer STORM FACTS Nearly 2000 thunderstorms are in progress around the world. A typical thunder storm is 15 miles in diameter and last

### Earth s Atmosphere: Some Facts.

Some terminology Weather is the state of the atmosphere at a given place and time. Temperature, precipitation, cloudiness, humidity, and wind are all components of weather. Climate is a composite of weather

### WeatherBug Vocabulary Bingo

Type of Activity: Game: Interactive activity that is competitive, and allows students to learn at the same time. Activity Overview: WeatherBug Bingo is a fun and engaging game for you to play with students!

### Hurricanes. Characteristics of a Hurricane

Hurricanes Readings: A&B Ch. 12 Topics 1. Characteristics 2. Location 3. Structure 4. Development a. Tropical Disturbance b. Tropical Depression c. Tropical Storm d. Hurricane e. Influences f. Path g.

### SIXTH GRADE WEATHER 1 WEEK LESSON PLANS AND ACTIVITIES

SIXTH GRADE WEATHER 1 WEEK LESSON PLANS AND ACTIVITIES WATER CYCLE OVERVIEW OF SIXTH GRADE WATER WEEK 1. PRE: Evaluating components of the water cycle. LAB: Experimenting with porosity and permeability.

### Section 3 What Is Climate?

Section 3 What Is Climate? Key Concept Earth s climate zones are caused by the distribution of heat around Earth s surface by wind and ocean currents. What You Will Learn Climate is the average weather

### Climate of Illinois Narrative Jim Angel, state climatologist. Introduction. Climatic controls

Climate of Illinois Narrative Jim Angel, state climatologist Introduction Illinois lies midway between the Continental Divide and the Atlantic Ocean, and the state's southern tip is 500 miles north of

### A.4 SEVERE WEATHER PLAN

Page 1 of 5 A.4 SEVERE WEATHER PLAN 1.0 Purpose 1.1 The purpose of this Severe Weather Response Plan is to minimize the impact on the University from a severe weather incident 2.0 Applicability 2.1 This

### Chapter Overview. Seasons. Earth s Seasons. Distribution of Solar Energy. Solar Energy on Earth. CHAPTER 6 Air-Sea Interaction

Chapter Overview CHAPTER 6 Air-Sea Interaction The atmosphere and the ocean are one independent system. Earth has seasons because of the tilt on its axis. There are three major wind belts in each hemisphere.

### Chapter 8 Global Weather Systems

Chapter 8 Global Weather Systems Global Weather Systems Low-latitudes Hadley Cell Circulation Wet near the equator Dry near 20-30 N and 20-30 S Periods of wet and dry in between Easterly Winds (NE & SE

### 1. The map below shows high-pressure and low-pressure weather systems in the United States.

1. The map below shows high-pressure and low-pressure weather systems in the United States. 6. Which map correctly shows the wind directions of the highpressure and low-pressure systems? 1) 2) Which two

### Partnerships Implementing Engineering Education Worcester Polytechnic Institute Worcester Public Schools

Partnerships Implementing Engineering Education Worcester Polytechnic Institute Worcester Public Schools Supported by: National Science Foundation Weather: 4.H.3 Weather and Classical Instruments Grade

### Hurricane Naming, Track, Structure Tropical Cyclone Development

Chapter 24: Tropical Cyclones Hurricane Naming, Track, Structure Tropical Cyclone Development Hurricane Characteristics Definition: Hurricanes have sustained winds of 120 km/hr (74 mph) or greater. Size:

### Precipitation forms from water droplets or ice crystals.

KEY CONCEPT Water falls to Earth s surface as precipitation. BEFORE, you learned Water moves between Earth's surface and the atmosphere Water vapor condenses into clouds NOW, you will learn How precipitation

### Read and study the following information. After reading complete the review questions. Clouds

Name: Pd: Read and study the following information. After reading complete the review questions. Clouds What are clouds? A cloud is a large collection of very tiny droplets of water or ice crystals. The

Perth Academy Geography Department Natural Hazards Tropical Storms Natural Hazards Natural Hazards affect a large percentage of the world s population. Despite the damage and destruction caused, there

### Weather: is the short term, day-to-day condition of the atmosphere

Weather Weather: is the short term, day-to-day condition of the atmosphere Meteorology the scientific study of the atmosphere They focus on physical characteristics and motion and how it relates to chemical,

### Exploring Florida: Teaching Resources for Science 1 of 6

Exploring Florida: Teaching Resources for Science 1 of 6 Tropical Cyclones This document describes tropical cyclones and the dangers they pose to coastal populations. It is intended to help teachers improve

### Severe Weather A Reading A Z Level T Leveled Book Word Count: 1,775

Severe Weather A Reading A Z Level T Leveled Book Word Count: 1,775 LEVELED BOOK T SEVERE WEATHER Written by Bruce D. Cooper Illustrated by Cende Hill Visit www.readinga-z.com for thousands of books and

### The Weather Merit Badge. A Study Guide By Jay R. Stockton Senior Forecaster, National Weather Service, WFO Medford Oregon

The Weather Merit Badge A Study Guide By Jay R. Stockton Senior Forecaster, National Weather Service, WFO Medford Oregon Requirement 1 Define Meteorology. Explain what weather is and what climate is. Discuss

### FOR SUBSCRIBERS ONLY! - TRIAL PASSWORD USERS MAY NOT REPRODUCE AND DISTRIBUTE PRINTABLE MATERIALS OFF THE SOLPASS WEBSITE!

FOR SUBSCRIBERS ONLY! - TRIAL PASSWORD USERS MAY NOT REPRODUCE AND DISTRIBUTE PRINTABLE MATERIALS OFF THE SOLPASS WEBSITE! 1 NAME DATE GRADE 5 SCIENCE SOL REVIEW WEATHER LABEL the 3 stages of the water

### Hurricanes: Nature's Wildest Storms by Erin Ryan

Name: : Nature's Wildest Storms by Erin Ryan You may already know that hurricanes are major tropical storms that can cause devastating waves, wind, and rain. They happen during Hurricane Season, which

### Earth Science Lecture Summary Notes Chapter 7 - Water and Atmospheric Moisture

Earth Science Lecture Summary Notes Chapter 7 - Water and Atmospheric Moisture (based on Christopherson, Geosystems, 6th Ed., 2006) Prof. V.J. DiVenere - Dept. Earth & Environmental Science - LIU Post

### Basics of weather interpretation

Basics of weather interpretation Safety at Sea Seminar, April 2 nd 2016 Dr. Gina Henderson Oceanography Dept., USNA ghenders@usna.edu Image source: http://earthobservatory.nasa.gov/naturalhazards/view.php?id=80399,

### Name: OBJECTIVES Correctly define: WEATHER BASICS: STATION MODELS: MOISTURE: PRESSURE AND WIND: Weather

Name: OBJECTIVES Correctly define: air mass, air pressure, anemometer, barometer, cyclone, dew point, front, isobar, isotherm, meteorology, precipitation, psychrometer, relative humidity, saturated, transpiration

### CGC1D1: Interactions in the Physical Environment Factors that Affect Climate

Name: Date: Day/Period: CGC1D1: Interactions in the Physical Environment Factors that Affect Climate Chapter 12 in the Making Connections textbook deals with Climate Connections. Use pages 127-144 to fill

### Weather. Ron Bianchi Meteorologist/Sailor

Weather Decoding Fundamentals The Weather Ron Bianchi Meteorologist/Sailor 1 2 APRIL 2015 TEMP OUTLOOK 3 APRIL 2015 RAINFALL OUTLOOK 4 MAY 2015 TEMP OUTLOOK 5 MAY 2015 RAINFALL OUTLOOK 6 JUNE 2015 TEMP

### What Causes Climate? Use Target Reading Skills

Climate and Climate Change Name Date Class Climate and Climate Change Guided Reading and Study What Causes Climate? This section describes factors that determine climate, or the average weather conditions

### But, could we force these clouds to create rain in the desert?

Clouds Exploration Phase How do clouds form? Above are fair weather cumulus (heaped/cotton ball) clouds. They do not form a single layer, as stratus clouds. They do not resemble wisps of hair, as cirrus.

### Georgia Performance Standards Framework for Natural Disasters 6 th Grade

The following instructional plan is part of a GaDOE collection of Unit Frameworks, Performance Tasks, examples of Student Work, and Teacher Commentary. Many more GaDOE approved instructional plans are

### Geography affects climate.

KEY CONCEPT Climate is a long-term weather pattern. BEFORE, you learned The Sun s energy heats Earth s surface unevenly The atmosphere s temperature changes with altitude Oceans affect wind flow NOW, you

### Clouds, Wind, and Storms

Clouds, Wind, and Storms A Science A Z Earth Series Word Count: 1,437 Clouds, Wind, and Storms Written by Kira Freed Visit www.sciencea-z.com www.sciencea-z.com Clouds, Wind, and Storms Key elements Used

### Analyze Weather in Cold Regions and Mountainous Terrain

Analyze Weather in Cold Regions and Mountainous Terrain Terminal Learning Objective Action: Analyze weather of cold regions and mountainous terrain Condition: Given a training mission that involves a specified

### Mesoscale Convective Systems. Supercell Thunderstorm

Chapter 18: Thunderstorm Ai Th d t Airmass Thunderstorm Mesoscale Convective Systems Frontal Squall Lines Frontal Squall Lines Supercell Thunderstorm Thunderstorm Thunderstorms, also called cumulonimbus

LEVEL 1 None LEVEL 2 Definitions for A Tornado Is Born anvil cloud: the upper portion of a cumulonimbus cloud that flattens spreads out, sometimes for hundreds of miles atmosphere: the mass of air surrounding

### Temperature affects water in the air.

KEY CONCEPT Most clouds form as air rises and cools. BEFORE, you learned Water vapor circulates from Earth to the atmosphere Warm air is less dense than cool air and tends to rise NOW, you will learn How

### Description: This competition will test the student's knowledge of meteorological terms, techniques, and events.

Weather or Not Description: This competition will test the student's knowledge of meteorological terms, techniques, and events. Number of Participants: 2 Approximate Time: 45 minutes The Competition: 1.

### Clouds. A simple scientific explanation for the weather-curious. By Kira R. Erickson

Clouds A simple scientific explanation for the weather-curious By Kira R. Erickson Table of Contents 1 3 4 INTRO 2 Page 3 How Clouds Are Formed Types of Clouds Clouds and Weather More Information Page

FOURTH GRADE WEATHER 1 WEEK LESSON PLANS AND ACTIVITIES WATER CYCLE OVERVIEW OF FOURTH GRADE WATER WEEK 1. PRE: Comparing different reservoirs of water. LAB: Experimenting with surface tension and capillary

### Name Class Date STUDY GUIDE FOR CONTENT MASTERY

Atmosphere SECTION 11.1 Atmospheric Basics In your textbook, read about the composition of the atmosphere. Circle the letter of the choice that best completes the statement. 1. Most of Earth s atmosphere

### 7613-1 - Page 1. Weather Unit Exam Pre-Test Questions

Weather Unit Exam Pre-Test Questions 7613-1 - Page 1 Name: 1) Equal quantities of water are placed in four uncovered containers with different shapes and left on a table at room temperature. From which

### Severe Weather Information

Severe Weather Information TORNADO FACTS Canada gets more tornadoes than any other country with the exception of the United States. Tornadoes are rotating columns of high winds. Sometimes they move quickly

### Interactions Between the Atmosphere & Hydrosphere. Weather & Climate

Interactions Between the Atmosphere & Hydrosphere Weather & Climate ~occur every 3-7 years ~can last weeks or years! ~cooler/wetter conditions in SE US ~dry weather in southern Africa, Southeast Asia,

### 5 th Grade Science Vocabulary Words

5 th Grade Science Vocabulary Words abiotic factor A nonliving part of an ecosystem. acceleration Change in velocity with respect to time. action The force one object applies to a second, as in Newton

Discover Your World With NOAA Follow That Hurricane! What You Will Do Devastating damage expected A most Track a hurricane on the same powerful hurricane with unprecedented type of chart used at the strength

### WEATHER THEORY Temperature, Pressure And Moisture

WEATHER THEORY Temperature, Pressure And Moisture Air Masses And Fronts Weather Theory- Page 77 Every physical process of weather is a result of a heat exchange. The standard sea level temperature is 59

### Humidity, Condensation, Clouds, and Fog. Water in the Atmosphere

Humidity, Condensation, Clouds, and Fog or Water in the Atmosphere The Hydrologic Cycle Where the Water Exists on Earth Evaporation From the Oceans and Land The Source of Water Vapor for the Atmosphere

### 6. Base your answer to the following question on the graph below, which shows the average monthly temperature of two cities A and B.

1. Which single factor generally has the greatest effect on the climate of an area on the Earth's surface? 1) the distance from the Equator 2) the extent of vegetative cover 3) the degrees of longitude

### NATURE PHYSICS: AN INTRODUCTION TO THUNDER AND LIGHTNING

NATURE PHYSICS: AN INTRODUCTION TO THUNDER AND LIGHTNING A Greek philosopher and scientist named Aristotle thought the sound was caused by clouds colliding. Some Native Americans believed the sound was

### Hazardous Weather Primer. CERT Basic Training Unit 0

Hazardous Weather Primer Unit 0 Topic Overview: CERT Activation Basic Weather Weather Hazards: Flooding, Winter Weather, Extreme temperatures, severe thunderstorms, tornados Weather Safety Personal Preparedness

### 6 th Grade Science Assessment: Weather & Water Select the best answer on the answer sheet. Please do not make any marks on this test.

Select the be answer on the answer sheet. Please do not make any marks on this te. 1. Weather is be defined as the A. changes that occur in cloud formations from day to day. B. amount of rain or snow that

### Classic Anvil Shaped Thunderstorm

Classic Anvil Shaped Thunderstorm Many of the illustrations and explanations in this power point came from http://www.srh.weather.gov/jetstream/index.htm Overshooting Top Indicates Strong Updrafts Life

### Study Guide: Water Cycle & Humidity

Earth Science Name Date Per. Study Guide: Water Cycle & Humidity 1. Explain the difference between Specific Humidity and Relative Humidity. Specific humidity refers to the actual amount of water vapor

### Assignment Discovery Online Curriculum. Lesson title: Weather Maps. Grade level: 4-6. Subject area: Earth Science. Duration: Two class periods

Assignment Discovery Online Curriculum Lesson title: Weather Maps Grade level: 4-6 Subject area: Earth Science Duration: Two class periods Objectives: Students will do the following: Understand basic information

### Seasonal & Daily Temperatures. Seasons & Sun's Distance. Solstice & Equinox. Seasons & Solar Intensity

Seasonal & Daily Temperatures Seasons & Sun's Distance The role of Earth's tilt, revolution, & rotation in causing spatial, seasonal, & daily temperature variations Please read Chapter 3 in Ahrens Figure

### SATELLITE USES FOR PURPOSE OF NOWCASTING. Introduction

SATELLITE USES FOR PURPOSE OF NOWCASTING Kedir, Mohammed National Meteorological Agency of Ethiopia Introduction The application(uses) of satellite sensing data deals to obtain information about the basic

### Meteorology: Weather and Climate

Meteorology: Weather and Climate Large Scale Weather Systems Lecture 1 Tropical Cyclones: Location and Structure Prof. Roy Thompson Crew building Large-scale Weather Systems Tropical cyclones (1-2) Location,

### Studying Weather As It Happens

Studying Weather As It Happens SOURCES OF WEATHER INFORMATION Everyone has considerable experience with (and understanding of) weather. After all, each of us has been living with weather all our lives.

### How do Scientists Forecast Thunderstorms?

How do Scientists Forecast Thunderstorms? Objective In the summer, over the Great Plains, weather predictions often call for afternoon thunderstorms. While most of us use weather forecasts to help pick

### Southern AER Atmospheric Education Resource

Southern AER Atmospheric Education Resource Vol. 9 No. 5 Spring 2003 Editor: Lauren Bell In this issue: g Climate Creations exploring mother nature s remote control for weather and Climate. g Crazy Climate

### CLIMATE, WATER & LIVING PATTERNS THINGS

CLIMATE, WATER & LIVING PATTERNS NAME THE SIX MAJOR CLIMATE REGIONS DESCRIBE EACH CLIMATE REGION TELL THE FIVE FACTORS THAT AFFECT CLIMATE EXPLAIN HOW THOSE FACTORS AFFECT CLIMATE DESCRIBE HOW CLIMATES

FOURTH GRADE WORKBOOK student Math/Science Nucleus 1990,2001 WATER CYCLE - WATER (4) TRY AND LOCATE THE PARTS OF THE WATER CYCLE ON THE ABOVE CARTOON. USE THE NUMBERS. DRAW IN ITEMS THAT MIGHT NOT BE DRAWN.

### Chapter 6. Atmospheric Moisture and Precipitation

Chapter 6 Atmospheric Moisture and Precipitation The Hydrosphere Hydrosphere water in the earth-atmosphere atmosphere system Oceans and Salt Lakes 97.6% Ice Caps and Glaciers 1.9% (Not available for humans)

### Emergency Management is responsible for coordinating the City of Houston s preparation for and response to emergency situations.

CITY OF HOUSTON Office of Emergency Management October 2004 Emergency Management is responsible for coordinating the City of Houston s preparation for and response to emergency situations. Houston is exposed

### Anyone Else Notice That Its Been Windy Lately?

National Weather Service Aberdeen, South Dakota January 2014 Inside this issue: Has it Been Windy Lately or What? 2013 Year in Review 2013 Year in Review (cont.) 1 2 3 Has it Been Windy Lately or What?

### The Sun and Water Cycle

reflect Think of the last time it rained in your city. When the rain stopped, you probably saw puddles on the ground. After a few hours, though, the ground was dry again. Where did all that rainwater go?

Chapter 2 Student Reading Atoms and molecules are in motion We warm things up and cool things down all the time, but we usually don t think much about what s really happening. If you put a room-temperature

### MAST ACADEMY OUTREACH. WOW (Weather on Wheels)

MAST ACADEMY OUTREACH MIDDLE SCHOOL PROGRAM Adventures Aboard WOW (Weather on Wheels) Highlights Teacher Instructions / Answer Keys MAST Academy Maritime and Science Technology High School Miami-Dade County

### NATURAL HAZARDS & NATURAL DISASTERS

NATURAL HAZARDS & NATURAL DISASTERS The World is always changing. Natural disasters are changes which are so great they may cause damage to the shape of the land or to the lives of people and other living

### Clarity. Helping you understand the facts about weather forecasting

Clarity Helping you understand the facts about weather forecasting Forecasting the weather is essential to help you prepare for the best and the worst of our climate. Met Office forecasters work 24/7,

### Floods are too much water on normally dry land. Rivers can flood after heavy rain has fallen over a long period of time. River flooding can last

Floods are too much water on normally dry land. Rivers can flood after heavy rain has fallen over a long period of time. River flooding can last weeks or longer. River floods usually occur slowly enough

### YEAR 1: Seasons and Weather

YEAR 1: Seasons and Weather Contents Include: The four seasons Tools to record the weather Making graphs Clouds Weather forecasts Weather around the world Please Note: The activities included in this pack

### 8.5 Comparing Canadian Climates (Lab)

These 3 climate graphs and tables of data show average temperatures and precipitation for each month in Victoria, Winnipeg and Whitehorse: Figure 1.1 Month J F M A M J J A S O N D Year Precipitation 139

SECOND GRADE WEATHER 1 WEEK LESSON PLANS AND ACTIVITIES WATER CYCLE OVERVIEW OF SECOND GRADE WATER WEEK 1. PRE: Exploring the properties of water. LAB: Experimenting with different soap mixtures. POST:

### A Guide for Teachers and Parents for

A Guide for Teachers and Parents for 2004, 2009, State of Florida All Rights Reserved Dear Educators and Parents, The Florida Division of Emergency Management www.floridadisaster.org 2555 Shumard Oak Boulevard

### Anticyclones, depressions, hot & drought, cold & snow

AS/A2-Level Geography Anticyclones, depressions, hot & drought, cold & snow Learning Objectives: To describe and explain the weather associated with high and low pressure systems and their links to extreme

### COACHES & OFFICIALS NEED A SAFETY PLAN!

Lightning Facts Each year, 67 people are killed by lightning in the United States on average. This is higher than tornadoes and hurricanes, and only second to flash flooding deaths. It is estimated that

### Chapter 15: Hurricanes

Chapter 15: Hurricanes Tropical weather & easterly waves Structure of a hurricane Hurricane formation theories Organized convection Heat engine driven by warm ocean Stages of development Hurricane formation

### The Sun and Water Cycle

reflect Have you ever jumped in a puddle or played in the rain? If so, you know you can get very wet. What you may not know is that a dinosaur could have walked through that same water millions of years

### CHAPTER 5 Lectures 10 & 11 Air Temperature and Air Temperature Cycles

CHAPTER 5 Lectures 10 & 11 Air Temperature and Air Temperature Cycles I. Air Temperature: Five important factors influence air temperature: A. Insolation B. Latitude C. Surface types D. Coastal vs. interior

How to analyze synoptic-scale weather patterns Table of Contents Before You Begin... 2 1. Identify H and L pressure systems... 3 2. Locate fronts and determine frontal activity... 5 3. Determine surface

### Be a Weather and Climate Watcher

Be a Weather and Climate Watcher This education resource was developed through support from the Midwestern Regional Climate Center, Illinois-Indiana Sea Grant, and the Illinois State Water Survey. Molly

### AP Heavy snow in October brought down trees and power lines in the northeastern U.S.

05 December 2011 voaspecialenglish.com The Science of Snow AP Heavy snow in October brought down trees and power lines in the northeastern U.S. (You can download an MP3 of this story at voaspecialenglish.com)

### Climates are described by the same conditions used to describe

58 The Causes of Climate R E A D I N G Climates are described by the same conditions used to describe weather, such as temperature, precipitation, and wind. You now know that oceans have an important effect

### Kindergarten Seasons and Weather Assessment

Kindergarten Seasons and Weather Assessment 1a. Circle the pictures that represent the four seasons: snowman going to a teacher harvest fruits colorful flowers the beach 1b. Write the name of the season

### Texas Department of Public Safety Texas Division of Emergency Management. Texas State Operations Center

Texas Department of Public Safety Texas Division of Emergency Management Texas State Operations Center Situation Awareness Brief Saturday, July 20 th 2013 As of 0900 CDT Tropical Weather Outlook For the

### Air Masses and Fronts

Air Masses and Fronts Air Masses The weather of the United States east of the Rocky Mountains is dominated by large masses of air that travel south from the wide expanses of land in Canada, and north from

### MiSP WEATHER WIND SPEED AND DIRECTION Teacher Guide, L1 L3. Introduction

MiSP WEATHER WIND SPEED AND DIRECTION Teacher Guide, L1 L3 Introduction This MiSP unit can be included in a standard weather and climate unit. Some teachers may like it as part of the introduction. Others

### SITE SPECIFIC WEATHER ANALYSIS REPORT

SAMPLE FLOOD ANALYSIS REPORT SITE SPECIFIC WEATHER ANALYSIS REPORT PREPARED FOR: Law Offices of Oliver Wendell Douglas Oliver Wendell Douglas PREPARED BY: November 29, 2007 CASE REFERENCE: Arnold Ziffel

### An Online School for Weather. www.srh.noaa.gov/jetstream/atmos/ll_whatacycle_aquifers.pdf

JetStream An Online School for Weather Aquifers Aquifers Aquifers 1 3 5 Aquifers Aquifers Aquifers 2 4 6 /atmos/ll_whatacycle_aquifers.pdf There are over 35 lesson plans in the National Weather Service