Studying The Past. II. Why Do We Study Fossils Found in Rocks?

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Studying The Past. II. Why Do We Study Fossils Found in Rocks?"

Transcription

1 Studying The Past I. What is a Fossil? A. Definition: The evidence or remains of once-living plants or animals II. Why Do We Study Fossils Found in Rocks? A. To provide evidence of the past existence of life forms B. To provide information about past environmental conditions C. To provide evidence that populations have undergone change over time due to environmental changes (evolution)

2 III. Types of Fossils A. Unaltered Remains 1. Description: plant or animal remains that have not undergone change since death. a. Uncommon because frozen, extremely dry, or oxygenfree environments are required to form these fossils b. Examples: Mummified humans Frozen organisms (Ice Man) Mammoths & cats in La Brea Tar Pits Fossilized insects in tree sap (amber)

3 B. Altered Remains 1. Description: all organic material has been removed and the hard parts of the organism have been changed a. Minerals seep in slowly and replace the original organic tissue, forming a rock-like fossil b. The fossil has the same shape as the original object, but is chemically more like a rock! c. Examples: Petrified wood Recrystallized shells

4 B. Altered Remains - Continued 2. Types of Altered Remains - Molds and Casts a. An organism dies and gets trapped/buried in sediment (sand, ash, etc) b. The original organism decomposes or dissolves away leaving a hollow impression of the organism (mold) c. This cavity might later become filled with minerals or sediment to create a cast. d. Examples: Plant fossils Trilobites

5 C. Indirect Evidence 1. Description: Trace fossils of plant and animal life a. Provide information about how an organism lived, moved or obtained food b. Examples: Coprolites (animal waste) Burrows/trails footprints

6 IV. Dating Fossils A. Relative-Age Dating: 1. Definition: Dating rocks and fossils by placing them in chronological order without exact dates. 2. Geologic Principles (used in this dating process): a. Original Horizontality Sedimentary rocks are deposited in horizontal layers b. The Law of Superposition in an undisturbed sequence the oldest rocks are at the bottom and each successive layer is younger c. Principle of Cross-Cutting Relationships: an intrusion or a fault is younger than the rock it cuts across

7 3. Other Means of Determining Relative Age a. Correlation Used to date rock layers that are far apart from each other Geologists examine rocks for distinctive fossils and features to help identify and date them b. Inclusions If a rock contains fragments of another rock, than the rock that is containing the fragments must be younger than the fragments themselves c. Unconformities Gaps in the geologic record May indicate erosion or deformation of the rock layers

8 Relative Dating - Applying the Concepts 1. Which is the oldest rock unit in the outcrop? 2. Which is the youngest rock unit in the outcrop? 3. What does H represent? 4. Why don t the layers on the left side of the diagram match with the layers on the right side of the diagram? 5. What do we call what is happening between layer F and M?

9 B. Absolute-Age Dating: 1. Definition: Dating rocks and fossils by using techniques to determine their actual age. 2. Radioactive Dating: Dating fossils based on the amount of radioactive material remaining in a substance over time When nuclei are unstable they spontaneously break apart (decay) in a process called radioactivity The original unstable element (parent) is converted to a different stable element (daughter) Since the rate of decay is constant, you can measure the parent to daughter ratio to determine the age of the rock The length of time it takes for one-half of the original radioactive amount to decay is called the elements half-life

10 B. Absolute Age Dating Continued 3. Uranium 238 When rock forms from magma, it contains U-238 and there is no lead present U-238 can be used to date rocks formed in the early Earth 4. Carbon 14 When an organism is alive, it s C-14 is continuously replaced When that organism dies, the C-14 decays to nitrogen and it does not get replaced C-14 can be used to date geologic events involving organisms within the past 30,000 years

11 time Example: Uranium-238 Lead half-life 2 half-lives 0 years 100 % U 4.5 billion years 50 % U 50 % lead Graph 9 billion years 25 % U 75 % lead %U left

12 C. A Special Case of Relative/Absolute Dating - Index Fossils 1. Description: Remains of unique species that can be used to correlate rock layers or to date a particular rock layer a. Must be easily recognized, abundant, and widely distributed geographically b. Must have lived during a relatively short time period c. If we can date a rock layer absolutely (exact age), then we can use the index fossil to date similar rock layers absolutely d. If we can only date the rock layer relatively (approximate age), then we can use the index fossil date similar rock layers relatively. e. Examples: Ammonites were common 245 to 65 million years ago, when they went extinct

Chapter 6 Practice Test

Chapter 6 Practice Test Class: Date: Chapter 6 Practice Test Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. Which of the following words does NOT describe catastrophic

More information

Radioactive Dating Topic: Geologic Time (middle/high school chemistry)

Radioactive Dating Topic: Geologic Time (middle/high school chemistry) Radioactive Dating Topic: Geologic Time (middle/high school chemistry) by Lodge Radioactive Dating Did ya ever find a rock and want to know the date That it was formed, within a number of years would you

More information

-most form when things die and are buried by sediments. -sediments slowly harden into rock and preserve the shapes or organisms

-most form when things die and are buried by sediments. -sediments slowly harden into rock and preserve the shapes or organisms Fossils -preserved remains or traces of living things -most form when things die and are buried by sediments -sediments slowly harden into rock and preserve the shapes or organisms -found in sedimentary

More information

IDS 102 Geologic Processes, Part 4: Relative and Absolute Dating Methods

IDS 102 Geologic Processes, Part 4: Relative and Absolute Dating Methods IDS 102 Geologic Processes, Part 4: Relative and Absolute Dating Methods Scientists use two different methods to estimate the age of geologic events on the Earth. Relative dating determines the order in

More information

NOTES: CH 19 - The Fossil Record; History of Life; Macroevolution

NOTES: CH 19 - The Fossil Record; History of Life; Macroevolution NOTES: CH 19 - The Fossil Record; History of Life; Macroevolution Vocabulary: Paleontologist Fossil record extinct Relative dating Absolute dating Geologic time scale Objectives: What are fossils? How

More information

Lecture Outlines PowerPoint. Chapter 11 Earth Science, 12e Tarbuck/Lutgens

Lecture Outlines PowerPoint. Chapter 11 Earth Science, 12e Tarbuck/Lutgens Lecture Outlines PowerPoint Chapter 11 Earth Science, 12e Tarbuck/Lutgens 2009 Pearson Prentice Hall This work is protected by United States copyright laws and is provided solely for the use of instructors

More information

Geologic History. 5. Which radioactive isotope disintegrates to lead (Pb 206 )? A) C 14 B) K 40 C) Rb 87 D) U 238

Geologic History. 5. Which radioactive isotope disintegrates to lead (Pb 206 )? A) C 14 B) K 40 C) Rb 87 D) U 238 1. Which event occurred earliest in geologic history? A) appearance of the earliest grasses B) appearance of the earliest birds C) the Grenville Orogeny D) the intrusion of the Palisades Sill 2. When did

More information

Fossils: Clues to the Past by Cindy Sherwood

Fossils: Clues to the Past by Cindy Sherwood Everybody knows that dinosaurs once roamed the earth. But how do we know that fact? Dinosaurs lived many millions of years ago and there were no photos taken of them (or any people around to take those

More information

Absolute Dating. 1. Determining the actual age of an event or object in years is called absolute dating.

Absolute Dating. 1. Determining the actual age of an event or object in years is called absolute dating. Name: Date: Period: 1 2 3 4 5 6 7 Essential Question: How is the absolute age of rock measured? Vocabulary: : any method of measuring the age of an object or event in years Radiometric Dating : a method

More information

Placing rocks in their proper sequence or formation. Doesn t give us the date of when something occurred.

Placing rocks in their proper sequence or formation. Doesn t give us the date of when something occurred. Placing rocks in their proper sequence or formation. Doesn t give us the date of when something occurred. With layers of undeformed sedimentary rocks, a layer of rock that below another is older than the

More information

Geologic time and dating. Geologic time refers to the ages relevant to Earth s history

Geologic time and dating. Geologic time refers to the ages relevant to Earth s history Geologic time and dating Most figures and tables contained here are from course text: Understanding Earth Fourth Edition by Frank Press, Raymond Siever, John Grotzinger, and Thomas H. Jordan Geologic time

More information

Geologic Time Scale Newcomer Academy Visualization Three

Geologic Time Scale Newcomer Academy Visualization Three Geologic Time Newcomer Academy Visualization Three Chapter Subtopic/Media Key Points of Discussion Notes/Vocabulary Introduction Title NA NA Various Pictures of Geologic Time It s About Time Personal Timeline

More information

Time and Geology Chapter 8

Time and Geology Chapter 8 Time and Geology Chapter 8 Where would you hike to find the oldest rocks in this area? (hint : you would use the principle of superposition) Tasks 1. Read about relative ages on pages 179-190 (skip the

More information

Geologic History Review

Geologic History Review 1. The climate that existed in an area during the early Paleozoic Era can best be determined by studying (1) the present climate of the area (2) recorded climate data of the area since 1700 (3) present

More information

Mr. Kluge Absolute Dating April 28, 2008 Practice Test

Mr. Kluge Absolute Dating April 28, 2008 Practice Test Mr. Kluge April 28, 2008 Practice Test 1. Which radioactive isotope is most useful for determining the age of mastodont bones found in late Pleistocene sediments? (1) uranium-238 (3) potassium-40 (2) carbon-14

More information

Absolute Dating. What is an isotope?

Absolute Dating. What is an isotope? Absolute Dating any method of measuring the age of an event or object in years radiometric dating (which uses the concept of radioactive decay) is the most common method of absolute dating used to determine

More information

USING RELATIVE DATING AND UNCONFORMITIES TO DETERMINE SEQUENCES OF EVENTS

USING RELATIVE DATING AND UNCONFORMITIES TO DETERMINE SEQUENCES OF EVENTS EARTH AND ENVIRONMENT THROUGH TIME LABORATORY- EES 1005 LABORATORY THREE USING RELATIVE DATING AND UNCONFORMITIES TO DETERMINE SEQUENCES OF EVENTS Introduction In order to interpret Earth history from

More information

Related Content standards: Biomes, Competition, Relationships, Selective Breeding, Environmental conditioning, Sunlight as a source of energy

Related Content standards: Biomes, Competition, Relationships, Selective Breeding, Environmental conditioning, Sunlight as a source of energy Unit Design Unit Title: Digging into the Past Course/Grade Level: Life Science/7 th Grade Subject/Topic Areas: History of life and fossil evidence Designed by: Marlee Tierce Time Frame: Brief Summary of

More information

Making Fossil Imprints

Making Fossil Imprints Making Fossil Imprints Background: Fossils are formed in several different ways. The first way involves imprints, also known as impression fossils. Impression fossils usually contain footprints, plants,

More information

Worksheet: The geological time scale

Worksheet: The geological time scale Worksheet: The geological time scale Senior Phase Grade 7-9 Learning area: Natural Science Strand: Life and living Theme: Biodiversity, change and continuity Specific Aim 1: Acquiring knowledge of natural

More information

89.215 - FORENSIC GEOLOGY GEOLOGIC TIME AND GEOLOGIC MAPS

89.215 - FORENSIC GEOLOGY GEOLOGIC TIME AND GEOLOGIC MAPS NAME 89.215 - FORENSIC GEOLOGY GEOLOGIC TIME AND GEOLOGIC MAPS I. Introduction There are two types of geologic time, relative and absolute. In the case of relative time geologic events are arranged in

More information

Science Benchmark: 04: 04 Standard IV: Tales of the Past Imprint en vi ron ment fossil impression infer organisms prehistoric Grade Benchmark

Science Benchmark: 04: 04 Standard IV: Tales of the Past Imprint en vi ron ment fossil impression infer organisms prehistoric Grade Benchmark Science Benchmark: 04: 04 Fossils are evidence of living organisms from the past and are usually pre served in sedimentary rocks. A fossil may be an impression left in sediments, the preserved remains

More information

The Fossil Record and Geologic Time Scale

The Fossil Record and Geologic Time Scale Two Conceptions of Earth History: Catastrophism Assumption: Great Effects Require Great Causes Earth History Dominated by Violent Events Uniformitarianism Assumption: We Can Use Cause And Effect to Determine

More information

GETTING INTO THE FOSSIL RECORD VOCABULARY NOTE-TAKING CHART

GETTING INTO THE FOSSIL RECORD VOCABULARY NOTE-TAKING CHART Key Term Erosion, n. Fossil, n. Fossil record, n.. GETTING INTO THE FOSSIL RECORD VOCABULARY NOTE-TAKING CHART Synonym/Explanation Transport of material from weathering or wearing away of rock and earth

More information

Grade 7 Earth/Space Pretest

Grade 7 Earth/Space Pretest Grade 7 Earth/Space Pretest Select the best answer to each question. 1. Earth can be divided into layers based on chemical composition. The three compositional layers of Earth are the core, the mantle,

More information

GEOLOGICAL TIME / DATING TECHNIQUES

GEOLOGICAL TIME / DATING TECHNIQUES DATE DUE: INSTRUCTOR: TERRY J. BOROUGHS Geology 305 NAME: SECTION: GEOLOGICAL TIME / DATING TECHNIQUES Instructions: Read each question carefully before selecting the BEST answer. Provide specific and

More information

John Wesley Powell Headed an Expedition through the Grand Canyon that Resulted in his Recognition of the Long & Complicated Geologic History of the

John Wesley Powell Headed an Expedition through the Grand Canyon that Resulted in his Recognition of the Long & Complicated Geologic History of the Geologic Time John Wesley Powell Headed an Expedition through the Grand Canyon that Resulted in his Recognition of the Long & Complicated Geologic History of the Earth Determining geological ages! Relative

More information

Geologic Time. Relative Dating. Principle of Original Horizontality. Relative Time. Absolute Time. Geologic Column

Geologic Time. Relative Dating. Principle of Original Horizontality. Relative Time. Absolute Time. Geologic Column Geologic Time Relative Time 5 Principles of Relative Dating Absolute Time Radiometric Dating Geologic Column Relative Dating principle of horizontality principle of superposition principle of cross-cutting

More information

ROCKS, FOSSILS AND SOILS SECTION 8: FOSSILS From Hands on Science by Linda Poore, 2003

ROCKS, FOSSILS AND SOILS SECTION 8: FOSSILS From Hands on Science by Linda Poore, 2003 ROCKS, FOSSILS AND SOILS SECTION 8: FOSSILS From Hands on Science by Linda Poore, 2003 STANDARDS: Westminster College Students will write or draw descriptions of a sequence of steps, events and observations,

More information

In this session we will focus on summarising what you need to know about:

In this session we will focus on summarising what you need to know about: SESSION 15: HISTORY OF LIFE ON EARTH KEY CONCEPTS In this session we will focus on summarising what you need to know about: Terminology and Definitions Life's History Mass Extinctions Key Events in the

More information

Chapter 8: Geologic Time

Chapter 8: Geologic Time Chapter 8: Geologic Time 1. 2. 3. 4. 5. The Art of Time The History of Relative Time Geologic Time Numerical Time Rates of Change Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction

More information

What s Up? A Relative Age Dating Activity By Christine McLelland

What s Up? A Relative Age Dating Activity By Christine McLelland What s Up? Relative ge ating ctivity y hristine McLelland Topic: Relative age dating of geologic cross sections Grade Level: 7-14 ontent Standard: National arth and Space Science Standard ontent Objective:

More information

Lab 10: Geologic Time

Lab 10: Geologic Time Name: Lab 10: Geologic Time Much of geology is focused on understanding Earth's history. The physical characteristics of rocks and minerals offer clues to the processes and conditions on and within Earth

More information

GEOL 104 Dinosaurs: A Natural History Geology Assignment. DUE: Mon. Sept. 18

GEOL 104 Dinosaurs: A Natural History Geology Assignment. DUE: Mon. Sept. 18 GEOL 104 Dinosaurs: A Natural History Geology Assignment DUE: Mon. Sept. 18 Part I: Environments of Deposition Geologists can use various clues in sedimentary rocks to interpret their environment of deposition:

More information

1. The timeline below represents time on Earth from the beginning of the Paleozoic Era Ato the present B.

1. The timeline below represents time on Earth from the beginning of the Paleozoic Era Ato the present B. Name Roy G Biv 1. The timeline below represents time on Earth from the beginning of the Paleozoic Era Ato the present B. Which numbered position best represents the time when humans first appeared in the

More information

Prehistoric Earth: Teacher s Guide

Prehistoric Earth: Teacher s Guide Prehistoric Earth: Teacher s Guide Grade Level: 1-2 Curriculum Focus: Earth Science Lesson Duration: Two class periods Program Description How do geologists know what happened on Earth billions of years

More information

EARTH SCIENCE CONCEPTUAL FRAMEWORK GRADES K 12 WCCUSD/UCMP EARTH AS A SYSTEM

EARTH SCIENCE CONCEPTUAL FRAMEWORK GRADES K 12 WCCUSD/UCMP EARTH AS A SYSTEM EARTH AS A SYSTEM K-2 3-5 6-8 How is the Earth part of a larger system? The Earth is part of a bigger system called the Solar System. The Earth is part of the Solar System. The Earth is part of the Solar

More information

Edible Rock Activity

Edible Rock Activity Activity Guidelines Page 1 Edible Rock Activity Grade: 6-12 Subject: Earth Science Purpose: To introduce students to relative age dating. Objective: Students will understand the concept of relative age

More information

Clues to Earth s Past

Clues to Earth s Past chapter 39 Clues to Earth s Past section 3 Absolute Ages of Rocks What You ll Learn how absolute age differs from relative age how the half-lives of isotopes are used to tell a rock s age Before You Read

More information

Regents Earth Science - Earth History ANSWERS AND EXPLANATIONS

Regents Earth Science - Earth History ANSWERS AND EXPLANATIONS Name Date Regents Earth Science - Earth History ANSWERS AND EXPLANATIONS 1. Geologic time is divided into units based upon 1 erosion rates 3 surface topography 2 rock types 4 fossil evidence As we have

More information

flourished and disappeared. lived and behaved. was an egg stealer. protected its eggs and young. environment and climate. have been found there.

flourished and disappeared. lived and behaved. was an egg stealer. protected its eggs and young. environment and climate. have been found there. What evidence do we have of ancient life more than 10 000 years old? Fossils provide clues about when life began, and when plants and animals first lived on land. We can study fossils to learn when certain

More information

FOURTH GRADE PAST LIFE

FOURTH GRADE PAST LIFE FOURTH GRADE PAST LIFE 1 WEEK LESSON PLANS AND ACTIVITIES ROCK CYCLE OVERVIEW OF SECOND GRADE CHEMISTRY WEEK 1. PRE: Analyzing the structure of the elements. LAB: Investigating the chemical bonding of

More information

Interactive Animation: Relative Geologic Dating

Interactive Animation: Relative Geologic Dating Homework 5 Geologic Time Due: 11:59pm on Sunday, February 28, 2016 You will receive no credit for items you complete after the assignment is due. Grading Policy Interactive Animation: Relative Geologic

More information

Fossils. Beyond the Book. FOCUS Book

Fossils. Beyond the Book. FOCUS Book FOCUS Book Fossils Choose one type of fruit and collect two very similar samples of it. Design a test to see how one sample changes over two weeks when it is buried in soil (like a fossil). You might measure

More information

Worksheet: The fossilization process

Worksheet: The fossilization process Worksheet: The fossilization process Senior Phase Grade 7-9 Learning area: Planet Earth and beyond Theme: The changing Earth Activity Sheet Specific Aim 1: Acquiring knowledge of natural sciences Specific

More information

Radiometric Dating Activity

Radiometric Dating Activity Teacher Notes: Radiometric Dating Activity This hands-on activity is a simulation of some of the radiometric dating techniques used by scientists to determine the age of a mineral or fossil. The activity

More information

Seventh Grade History of the Earth and Life Forms Assessment

Seventh Grade History of the Earth and Life Forms Assessment Seventh Grade History of the Earth and Life Forms Assessment 1a. Fossils can be thought of as a record of the: a. past b. present c. future 1b. What do we look at when we want to see a record of past life

More information

6 th Grade PSI. Evidence of Common Ancestry and Diversity. Fossils. Slide 2 / 106. Slide 1 / 106. Slide 3 / 106. Slide 4 / 106.

6 th Grade PSI. Evidence of Common Ancestry and Diversity. Fossils. Slide 2 / 106. Slide 1 / 106. Slide 3 / 106. Slide 4 / 106. Slide 1 / 106 Slide 2 / 106 New Jersey Center for Teaching and Learning Progressive Science Initiative This material is made freely available www.njctl.org at and is intended for the non-commercial use

More information

Chapter 4 Practice Test

Chapter 4 Practice Test Chapter 4 Practice Test Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. The process in which water, wind, ice, and heat break down rock is

More information

HAMPSHIRE GAZETTE THURSDAY, SEPT

HAMPSHIRE GAZETTE THURSDAY, SEPT OURS NG ORM DROP DD SIGNTUR MPSIR GZTT TURSDY, SPT 23 2010 25 Stanford Law School Palo lto, 2 1 O Jeffery mherst Natural istory Museum mherst ollege mherst, M 01002 T mherst ollege Department of Geology

More information

Carbonate Rock Formation

Carbonate Rock Formation Limestone, dolomite (or dolostone), and marble are often collectively referred to as carbonate rocks because the main mineral is calcite. The chemical name of calcite is calcium carbonate. Limestone, dolomite,

More information

principles of stratigraphy: deposition, succession, continuity and correlation

principles of stratigraphy: deposition, succession, continuity and correlation Relative Age Dating Comparative Records of Time Nature of the rock record principles of stratigraphy: deposition, succession, continuity and correlation Stratigraphic tools biological succession of life:

More information

Our Changing Landforms. Wind, Water, Ice, and Gravity Form Sand Dunes, Canyons, and Deltas

Our Changing Landforms. Wind, Water, Ice, and Gravity Form Sand Dunes, Canyons, and Deltas Our Changing Landforms Wind, Water, Ice, and Gravity Form Sand Dunes, Canyons, and Deltas Landforms Change Over Time Two main ways landforms change are Uplifting is due to changes inside the Earth Uplifting

More information

limestone sandstone fault

limestone sandstone fault ACTIVITY 1: SANDWICH STRATIGRAPHY Using a sandwich model, students will determine the relative ages of different sedimentary rock layers and experiment with folding and faulting. OBJECTIVES Students will

More information

TEST NAME: EARTH HISTORY TEST ID: GRADE:08 SUBJECT:Life and Physical Sciences TEST CATEGORY: My Classroom

TEST NAME: EARTH HISTORY TEST ID: GRADE:08 SUBJECT:Life and Physical Sciences TEST CATEGORY: My Classroom TEST NAME: EARTH HISTORY TEST ID: 194749 GRADE:08 SUBJECT:Life and Physical Sciences TEST CATEGORY: My Classroom EARTH HISTORY Page 1 of 69 Student: Class: Date: 1. Rock layers with seashells are found

More information

7.2. Half-Life. Did You Know? Words to Know

7.2. Half-Life. Did You Know? Words to Know 7. Half-Life A half-life can be used to compare the rate of radioactive decay for an isotope. The shorter the half-life, the faster the decay rate. All radioactive decay rates follow a similar pattern

More information

Name: LAB: The Geologic Time Scale

Name: LAB: The Geologic Time Scale Name: LAB: The Geologic Time Scale INTRODUCTION: It is difficult to comprehend the age of the Earth and the time that various geologic events occurred in the past. A model drawn to scale is often useful

More information

Evidence for Evolution

Evidence for Evolution Evidence for Evolution Evidence for evolution 1. Fossil record and age of the earth (using radioactive dating) 2. Biogeography 3. Homologous structures and vestigial organs 4. Embryology 5. Cellular and

More information

Absolute Time. Radiometric Dating: the source of the dates on the Geologic Time Scale

Absolute Time. Radiometric Dating: the source of the dates on the Geologic Time Scale Absolute Time Radiometric Dating: the source of the dates on the Geologic Time Scale Radiometric Dating Actually a simple technique. Only two measurements are needed: 1. The parent:daughter ratio measured

More information

The rock cycle. Introduction. What are rocks?

The rock cycle. Introduction. What are rocks? The rock cycle This Revision looks at the three types of rock: sedimentary, igneous and metamorphic. It looks at how they are formed, the weathering of rocks and the way one form of rock turns into another,

More information

Radiometric Dating Lab By Vicky Jordan

Radiometric Dating Lab By Vicky Jordan Science 8: The Deep Time Diaries Name Date Per Radiometric Dating Lab By Vicky Jordan Problem: How long will it take for 100 atoms of the radioactive parent Carbon-14 to completely decay to the stable

More information

Lava Dams and Lepidodendrons

Lava Dams and Lepidodendrons Lava Dams and Lepidodendrons Techniques used to date rocks and geologic events in the Grand Canyon The Purpose Why use dating techniques? The Science Clocks in the Rocks The Results Examples of key dates

More information

Photosynthesis, Cycling of Matter Through an Ecosystem

Photosynthesis, Cycling of Matter Through an Ecosystem Science 1. Cameron grew a snow pea plant from a seed at school. He brought the plant home in the hopes of getting some pea pods to eat. He forgot to water it for a whole week and the plant died. Based

More information

Page 1. Name:

Page 1. Name: Name: 1) According to the Earth Science Reference Tables, which sedimentary rock would be formed by the compaction and cementation of particles 1.5 centimeters in diameter? A) shale B) conglomerate C)

More information

Fish, Fossils and Fuel

Fish, Fossils and Fuel Lesson Plan - Page 1 Topic Where oil comes from Source Oil and Natural Gas, pages 18-19 Objective Students will gain an overall picture of the sequence of processes that leads to the formation of sedimentary

More information

Stratigraphic Cross Sections Why study old rocks?

Stratigraphic Cross Sections Why study old rocks? rom IRIS collection: Animations of eologic Processes www.iris.edu/educate/animations Stratigraphic ross Sections Why study old rocks? The earthquake potential of an area can be determined by studying the

More information

The Origin of Life on Earth

The Origin of Life on Earth The Origin of Life on Earth Chemical Evolution = The study of how life began Heterotroph Theory: the first cells were heterotrophs, organisms incapable of making their own food Steps involved in the heterotroph

More information

Name Class Date. Use the terms from the following list to complete the sentences below. Each term may be used only once. Some terms may not be used.

Name Class Date. Use the terms from the following list to complete the sentences below. Each term may be used only once. Some terms may not be used. Assessment Chapter Test B Rocks: Mineral Mixtures USING KEY TERMS Use the terms from the following list to complete the sentences below. Each term may be used only once. Some terms may not be used. stratification

More information

Ch. 6 Change Over Time

Ch. 6 Change Over Time Ch. 6 Change Over Time What Evolution is NOT! A theory that describes the origin of life on Earth. A theory that is just a theory. A theory that say that organisms TRY to adapt to their environment. A

More information

Alfred Wegener s Theory of Continental Drift Became Modern Plate Tectonics. Wegener in Greenland about 1912. He froze to death there in 1930.

Alfred Wegener s Theory of Continental Drift Became Modern Plate Tectonics. Wegener in Greenland about 1912. He froze to death there in 1930. Alfred Wegener s Theory of Continental Drift Became Modern Plate Tectonics Wegener in Greenland about 1912. He froze to death there in 1930. Science is self correcting. The Scientific Method The history

More information

Station 1 Fossil Dating. What did you learn?

Station 1 Fossil Dating. What did you learn? Station 1 Fossil Dating Radioactive DATING Radiocarbon or Carbon- 14 dating is a method that utilizes concepts of radioactive decay to determine dates of fossils. This method is used on organic materials

More information

Section: The Rock Cycle

Section: The Rock Cycle Skills Worksheet Chapter 2 section 1 Inside the Restless Earth /29 Section: The Rock Cycle 1. A naturally occurring solid mixture of one or more minerals or organic matter is called a. an element. b. a

More information

What is the Rio Grande Rift?

What is the Rio Grande Rift? 26. What is the Rio Grande Rift? Description: Objectives: Students will learn about the concept of a rift in general and about the Rio Grande Rift in particular. Two different diagrams of the rift can

More information

Solar System Formation

Solar System Formation Blizzard Bag Day 2 Here is the lesson that you need to complete for the first calamity day. I am attaching the notes along with the question to help you with the question. Please try your BEST and answer

More information

Generally, there are four main concepts that students struggle with when thinking about radioactive decay:

Generally, there are four main concepts that students struggle with when thinking about radioactive decay: Name: Radioactivity Lab Date: Reading Comprehension: Read the portion of the article on radioactive decay below and answer the following questions based on the reading. Use complete sentences. How Does

More information

Geological Time Murck and Skinner, 1999

Geological Time Murck and Skinner, 1999 Geological Time Murck and Skinner, 1999 Geological Time Scale The Precambrian (Archaean( + Proterozoic) ) covers the first 85% of the geological timescale. Precambrian rocks form the cores of the major

More information

SEDIMENTARY AND METAMORPHIC ROCKS

SEDIMENTARY AND METAMORPHIC ROCKS Date Period Name SEDIMENTARY AND METAMORPHIC ROCKS SECTION.1 Formation of Sedimentary Rocks In your textbook, read about the processes that form sedimentary rocks. Use each of the terms below to complete

More information

The Earth. March 4, 2014

The Earth. March 4, 2014 The Earth March 4, 2014 The Planets 2 How long ago did the solar system form? Radioactive Decay Radioactive decay - atomic nucleus spontaneously loses energy Parent nuclei transforms to daughter nuclei

More information

Liz LaRosa Images from Geology.com unless otherwise noted

Liz LaRosa Images from Geology.com unless otherwise noted Liz LaRosa http://www.middleschoolscience.com 2010 Images from Geology.com unless otherwise noted A rock is a naturally occurring solid mixture of one or more minerals, or organic matter Rocks are classified

More information

II. Grade 7, A Trip Through TIME! 2006 Colorado Unit Writing Project 1

II. Grade 7, A Trip Through TIME! 2006 Colorado Unit Writing Project 1 A Trip Through TIME! Grade Level or Special Area: 7 th Grade Science Written by: Beth Spencer, Aurora Academy Charter School, Aurora, Colorado Length of Unit: 5 lessons (approximately 8 days long; one

More information

Unit 5: Formation of the Earth

Unit 5: Formation of the Earth Unit 5: Formation of the Earth Objectives: E5.3B - Explain the process of radioactive decay and explain how radioactive elements are used to date the rocks that contain them. E5.3C - Relate major events

More information

Geologic Time & Fossils

Geologic Time & Fossils Geologic Time & Fossils People originally thought that fossils were placed in rocks by supernatural beings. Later (~450 B.C.) a Greek historian suggested that fossils were evidence of past life. Soon after

More information

GY 112: Earth History. Lecture 7 & 8: Dating

GY 112: Earth History. Lecture 7 & 8: Dating UNIVERSITY OF SOUTH ALABAMA GY 112: Earth History Lecture 7 & 8: Dating Instructor: Dr. Douglas W. Haywick Last Time 1. Alfred Wegener and Drifting Continents 2. The Plate Tectonic Revolution 3. Plate

More information

STRATIGRAPHY. Teacher Guide including Lesson Plans, Student Readers, and More Information

STRATIGRAPHY. Teacher Guide including Lesson Plans, Student Readers, and More Information STRATIGRAPHY Teacher Guide including Lesson Plans, Student Readers, and More Information Lesson 1 - What is stratigraphy? Lesson 2 - Correlation Activity Lesson 3 -Geologic Time Lesson 4 - Earth s History

More information

Radioactive Elements (pages )

Radioactive Elements (pages ) SX05_BkK_AdRdStdyWkBk.fm Page 58 Monday, April 18, 2005 8:09 AM Radioactive Elements (pages 139 146) Radioactivity (pages 140 141) Key Concept: In 1896, the French scientist Henri Becquerel discovered

More information

What is a half-life and how is it used in radiocarbon dating?

What is a half-life and how is it used in radiocarbon dating? Half-Life Textbook pages 302 311 Section 7.2 Summary Before You Read Write a sentence in the lines below explaining what the word decay means to you. As you read about radioactive decay, think about how

More information

Time Travelers: Measuring the Age of The Earth

Time Travelers: Measuring the Age of The Earth Time Travelers: Measuring the Age of The Earth An original lesson by Carey Potter & Becki Lucas Focus on Inquiry The student will collect and analyze data, collaborate and discuss their findings, compare

More information

SECOND GRADE PAST LIFE

SECOND GRADE PAST LIFE SECOND GRADE PAST LIFE 2 WEEKS LESSON PLANS AND ACTIVITIES ROCK CYCLE OVERVIEW OF SECOND GRADE CHEMISTRY WEEK 1. PRE: Comparing the states of matter. LAB: Observing the elements on the periodic table.

More information

Chapter Review USING KEY TERMS. extrusive igneous rock texture. and positions of the minerals the rock contains. arranged in plates or bands. is.

Chapter Review USING KEY TERMS. extrusive igneous rock texture. and positions of the minerals the rock contains. arranged in plates or bands. is. Skills Worksheet Chapter Review USING KEY TERMS 1. In your own words, write a definition for the term rock cycle. Complete each of the following sentences by choosing the correct term from the word bank.

More information

Essential Standards: Grade 4 Science Unpacked Content

Essential Standards: Grade 4 Science Unpacked Content This document is designed to help North Carolina educators teach the Essential Standards (Standard Course of Study). NCDPI staff are continually updating and improving these tools to better serve teachers.

More information

Unit 2 Historical Geology Suggested Time: 14 Hours

Unit 2 Historical Geology Suggested Time: 14 Hours Unit 2 Historical Geology Suggested Time: 14 Hours Unit Overview Introduction This unit is intended to give students an opportunity to explore the concepts of relative and absolute time using historically

More information

Fossils PART TWO MATERIALS PREPARATIONS: PROCEDURE: FOR EACH STUDENT: Analysis of Fossil Samples Chart (opt.) FOR CLASS:

Fossils PART TWO MATERIALS PREPARATIONS: PROCEDURE: FOR EACH STUDENT: Analysis of Fossil Samples Chart (opt.) FOR CLASS: PART TWO Fossils MATERIALS FOR EACH STUDENT: Student Fossils Analysis of Fossil Samples Chart (opt.) FOR CLASS: Fossil CD with PowerPoint Book: Fossils Tell of Long Ago by Aliki Student Science Notebooks

More information

The Fossil Record. MasterFoods Fossil Gallery Year Name

The Fossil Record. MasterFoods Fossil Gallery Year Name The Fossil Record MasterFoods Fossil Gallery Year 7-10 At School Discuss why you think fossils are useful and what they teach us about life on Earth In the Museum go to the MasterFoods Fossil Gallery.

More information

Exampro GCSE Biology. B2.6 Species. Name: Class: Foundation tier. Author: Date: Time: 69. Marks: 69. Comments: Page 1 of 26

Exampro GCSE Biology. B2.6 Species. Name: Class: Foundation tier. Author: Date: Time: 69. Marks: 69. Comments: Page 1 of 26 Exampro GCSE Biology B2.6 Species Foundation tier Name: Class: Author: Date: Time: 69 Marks: 69 Comments: Page of 26 Q. In the Grand Canyon, scientists have found fossils of several different groups of

More information

Round and Round the Rock Cycle

Round and Round the Rock Cycle Round and Round the Rock Cycle Objectives The student will identify the processes that cause the three different types of rocks to form and identify rock samples from each type. Suggested Grade Level Fifth

More information

REVIEW Key Concepts. Unit 5 Planet Earth. Earthquakes and Volcanoes can suddenly change the Earth s surface

REVIEW Key Concepts. Unit 5 Planet Earth. Earthquakes and Volcanoes can suddenly change the Earth s surface REVIEW Key Concepts Unit 5 Planet Earth 1.0 Changes on the Earth s Surface Layers: Crust, Mantle, Core (Inner and Outer) Earthquakes and Volcanoes can suddenly change the Earth s surface Scientist s use

More information

TO GO TO ANY OF THE PAGES LISTED BELOW, CLICK ON ITS TITLE

TO GO TO ANY OF THE PAGES LISTED BELOW, CLICK ON ITS TITLE TO GO TO ANY OF THE PAGES LISTED BELOW, CLICK ON ITS TITLE CHAPTER 11 Radioactive Elements 1 11-1 What elements are not metals? 2 11-2 What are metalloids? 3 Semiconductors Enrichment Activity for Lesson

More information

Dinosaurs and Fossils

Dinosaurs and Fossils Dinosaurs and Fossils T ABLE OF CONTENTS ABOUT DELTA SCIENCE MODULES Program Introduction................... iii Teacher s Guide..................... iv Delta Science Readers............... vi Equipment

More information

continent convection current core one of the main landmasses on Earth, such as Africa, Asia, or North America

continent convection current core one of the main landmasses on Earth, such as Africa, Asia, or North America continent one of the main landmasses on Earth, such as Africa, Asia, or North America convection current a series of circular motions that occur in substances when heating and cooling happen together core

More information

Life Science Vocabulary. organ - group of tissues that work together to carry out a specific function

Life Science Vocabulary. organ - group of tissues that work together to carry out a specific function Life Science Vocabulary Structure and Function cell - basic unit of life found in all living things tissue - a group of specialized cells organ - group of tissues that work together to carry out a specific

More information