Page 101 - Science Course 3 (Book 1)

Cycles of Matter

5. What are two human activities
that add carbon to the
atmosphere? Explain your
answer.
6. What organisms remove
carbon dioxide from the
atmosphere?

7. Where does carbon exist on
Earth?

8. Which molecule contains
carbon and is part of the
oxygen cycle and the carbon
cycle?

Mo2-L7: Lesson Review Quiz (Multiple Choice)

Direction: On the line before each question or statement, write the letter of the correct answer.

1. The process of __________ is an important part of the water cycle.
A. weathering
B. evaporation
C. photosynthesis
2. What part do plants play in the oxygen cycle?
A. create new oxygen molecules
B. consume oxygen during transpiration
C. release oxygen during photosynthesis
3. Humans become part of the carbon cycle when they
A. breathe in carbon dioxide.
B. release carbon as a waste product.
C. produce new carbon compounds in their cells.

Mo2-L7: Lesson Review Quiz (Matching)

Direction: On the line before each definition, write the letter of the term that matches it correctly. Each
term is used only once.

4. shows several connected food chains A. producer
5. changes energy from the environment into food energy B. consumer

6. cannot make its own food and gets energy by eating other organisms C. food chain
7. shows the amount of energy available at each step in a food chain D. food web

8. shows how energy flows in an ecosystem through feeding relationships E. energy pyramid

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