Environmental Science: A Global Perspective. All the flowers of all the tomorrows are in the seeds of today. Chinese Proverb

Transcription

1 Environmental Science: A Global Perspective All the flowers of all the tomorrows are in the seeds of today. Chinese Proverb

2 Shout Out Think about 5 major environmental problems that we are facing today Pick a partner at your table and develop a combined list of your top 5 Be prepared to share your ideas with the entire class

3 Period - 1 Environmental Problems

4 Understanding Our Environment

5 Objectives: Compare the terms ecology and environmental science Describe the 3 categories of environmental problems. Explain how the difference between a population crisis and a consumption crisis. Distinguish between renewable and nonrenewable resources.

6 What is Ecology? The study of how living things interact with each other and with their non-living environments Pure Science

7 What is Environmental Science? The study of how humans interact with their environment Major goal: finding solutions to address the problems that humans have created Applied Science

8 What is the Environment? Everything that surrounds Includes the natural world as well as things produced by humans

9 Open Textbook to pg. 3. High school students in New Hampshire noticed a decline of a type of local freshwater mussel. What was the name of the mussels? What may have caused the decline? What did the students do?

10 Class work Assignment Case Study: Lake Washington: Page 6 Read and then respond on a separate sheet of paper and in complete sentences. What is the issue? How was the issue resolved? Answer Thinking Critically Questions 1&2

11 What are the main Environmental Problems 1. Resource Depletion 2. Pollution 3. Extinction

12 What is Resource Depletion? A resource is depleted when a large part of it has been used up and it is not usable or valuable anymore. Natural resources are resources needed by living things. Such as: sunlight, air, water, fossil fuels, minerals, plants, animals, & forests

13 Two types of resources 1. Nonrenewable: cannot be replaced Ex: Metals, Fossil fuels, gems 2. Renewable: continually replaced Ex: Sunlight, water, air, wood Some renewable resources can be depleted if overused. Ex: Trees being cut faster than they can regrow.

14 What is Pollution? The introduction of harmful levels of anything into the environment. (air, water, soil) Ex: smoke, mercury, nitrous oxides, pesticides, heat, noise, etc

15 What is Extinction? The last individual of a species has died and the species is gone forever Some species are disappearing faster today than ever before.

16 What is the Biosphere? Thin layer around the Earth where all life exists Extends from 8km (about 5 miles) above the surface to about 8 km into the deepest part of the ocean

17 Local & Global perspective Many local environmental problems are contribute to larger global problems. Sulfur dioxide released by coal power plants in Ohio and Pennsylvania fall as acid rain in Southern Canada. Trash that washes into the Monongahela River sometimes finds it way down the Mississippi River and into the Gulf of Mexico.

18 Environmental Problems Affect People 1. Developed countries In Highly industrialized/ high average incomes Consume more resources and create more pollution per person Ex: US, Japan, Canada, western Europe 2. Developing countries Less industrialized/low average incomes Consume less resources per person but contain over 2/3 of the world s population Ex: China, India, Kenya

19 How do problems happen? When the human population grows too rapidly for the environment to support it, the environment suffers and is depleted. This leads to a Population Crisis. When a population uses its and other countries natural resources faster than those resources can be renewed, replaced, or cleaned up. This leads to a Consumption Crisis. What category of countries do you think these crises occur in?

20 What is a Sustainable world? A world in which human populations can continue to exist indefinitely with a high standard of living and health Nonrenewable resources used sparingly and efficiently Renewable resources used at a rate in which they could be replaced This is the goal of solving environmental problems.

21 Understanding Science Describe scientific methods Explain the uses of tables, line graphs, bar graphs, and pie charts

22 Science Pure Science: seeks to answer questions about how the real world works. Applied Science: uses information found by pure science to solve problems Where does environmental science fall? What about ecology?

23 What is science? Something you know All information that we know up to this point. Something you do A way of getting the answers to questions about the world around us

24 Scientific method Used to provide accurate answers to our questions Using your text, identify the steps of the scientific method. O H/P E O/I D U G C R

25 Classwork Define bold face terms (16) Sections 1 & 2 Number and Underline each term Section Review Questions Page 12 #1, 2, 3 Page 19 #1, 2, 3, 4