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Bellringer/Section 1 Notes

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1 Bellringer/Section 1 Notes
What is the environment? Is the environment something that can be: A. Harmed B. Saved C. Preserved D. Destroyed If so, give examples of each.

2 Environmental Science Chapter 1

3 I. Understanding our Environment
Which of the following pictures qualify as an environment? Why or why not?

4 B. Environmental Science –
The study of how ______ humans interact with the environment. What is the main goal of environmental science? Solve environmental problems by studying the interaction of humans and the environment. II. Fields of study Environmental science incorporates many disciplines: Ecology Biology Earth Science Physics Chemistry Social Science Economics

5 Bellringer/Section 2 Notes
Economists value the environment at 33 trillion dollars (that’s $33,000,000,000,000). Make a list of 5 services that the Earth’s ecosystems provide.

6 The Tragedy of the Commons

7 I. The Tragedy of the Commons
areas of land that belonged to a whole village. Short term strategy – use resources w/out sharing. Why? People thought that if they didn’t use the resources, someone else would. Results – no resources for anyone.

8 What is the benefit of doing this?
Commons were replaced individually owned fields. What is the benefit of doing this? Over use meant destroying your own field. What are the “commons” of today?

9 II. Economics and the Environment
Supply and Demand The greater the demand, the more it’s worth.


11 Demand for oil increases what happens?
Pay higher prices Use less oil Find new energy sources III. Costs and Benefits Balances the cost of action against the expected benefits. Example: Industry – The cost of pollution control is too expensive. Community – The benefit is worth the cost.

12 Developed vs. Developing Countries
A. Developed – Higher average income Examples: U.S.A. Canada Japan Korea Slower population growth Diverse industrial economies Stronger social support systems

13 B. Developing – Agricultural based economy Examples: Afghanistan Haiti Rapid population growth

14 C. Population Pressures
Populations increase rapidly resources aren’t available. 2. Food production cannot keep up with the pop. growth. 3. Little to no government support.

15 Your teacher has given you the following assignment: Investigate the impact on plant growth of adding various amounts of fertilizer to potted plants. Think about what you would need to do to be certain that the fertilizer was having the impact on the plant growth. Then answer the items below. Place a Y besides items that would be part of your plan to investigate plant height and fertilizer. Place a N besides items that will not help you investigate this particular connection. a. __ Put one plant in a sunny windowsill and one in a dark corner. b. __ Give plants the same amounts of water. c. __ Give different plants different amounts of fertilizer without keeping track of which plant got extra fertilizer. d. __ Use some new plants from seeds and some old plants that have been growing for months. e. __ Start with plants that are the same size. f. __ Keep all plants in a similar location. g. __ Carefully note amounts of fertilizer each plant is given. h. __ Keep one plant fertilized but with no water. 2. Name at least five tools or supplies will you need to perform this experiment

16 The Scientific Method

17 I. The Scientific Method
A. The ______________ is a way to solve problems scientific method B. Scientific Method Steps 1. Observe 2. Ask a Question 3. Research/Collect Data 4. Form a Hypothesis a. Hypothesis - A possible answer 5. Experiment (test hypothesis) 6. Draw conclusion

18 II. The experiment A. Experiments contain VARIABLES – a factor that can change. B. There are 2 types of variables: 1. Independent variable – variable that is changed by the scientist. 2. Dependent variable – Variable that changes as the independent variable changes. C. Experiments also contain: 1. Controls: a standard of comparison 2. Constant: things that DO NOT change in an experiment.

19 III. Making a graph Independent variable – variable plotted on the x-axis Dependent variable – variable plotted on the y-axis Linear graph – plots make a straight line.

20 Close your notebook

21 Research and collect data
1. Ask a question 4. Observation 2. Draw Conclusion 5. Research and collect data 3. Form hypothesis 6. Experiment Research and collect data Ask a Question Observation Form hypothesis Draw Conclusion Experiment

22 Class Work What you need: Notebook paper Textbook

23 Make your paper look like this:
The Scientific Method Make your paper look like this: Definition Picture My Definition To me, it’s like…

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