The Ch. 3 Science test will be on Monday, Oct. 5. Parents please sign indicating you are aware of this upcoming test. Please make sure your child studies
nightly between today, Sept. 29, and test day.
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Science Chapter 3 Test – Cycles in Nature Study Guide
1. Be able to label which is respiration, photosynthesis, and decomposition. Refer to page 77.
2. How do most animals get the carbon they need? eating plants
3. The following occurs when bacteria break down organic matter and return carbon dioxide and water…decomposition.
4. Why is the carbon cycle important to living things? It transports a material needed by all living things.
5. This process does NOT release carbon dioxide into the environment…photosynthesis.
6. Burning gas in an automobile is a type of combustion.
7. Why do organisms need nitrogen? to build proteins and DNA
8. Most animals get nitrogen from eating other organisms.
9. Which of the following can cause nitrogen fixation? Lightning
10. What important function do bacteria in the soil perform? nitrogen fixation
11. Nitrogen in the form of a gas can be used directly by some kinds of bacteria.
12. Bacteria are most important in the process of nitrogen fixation.
13. Clouds form in the atmosphere through the process of condensation.
14. Which of the following statements about groundwater is true? It is stored in underground caverns or porous rock.
15. A change of water from vapor to liquid is condensation.
16. A change of water from liquid to vapor is evaporation.
17. Be able to label evaporation, condensation, precipitation, transpiration. Refer to page 76.
18. Predict what would happen if the water on Earth suddenly stopped evaporating.
The Earth would soon be covered with water. The water cycle would be interrupted. It would no longer rain. Land organisms
would probably go extinct.
19. Primary succession may begin in an area composed of bare rock..
20. A forest growing back after a forest fire is an example of secondary succession.
21. What effect does biodiversity have on a forest? It makes destruction by insects less likely.
22. A desert that contains plants and animals that have been there for a long time is an example of a mature community.
23. During what process is rock slowly transformed into soil? primary succession
24. Which would most likely be a pioneer species? Lichens
25. How does secondary succession differ from primary succession? Secondary succession occurs in an area that has soil.
26. A mature community always has well-adapted organisms.
27. An area where a glacier has just melted away will begin the process of primary succession.
28. Which of the following statements about climax species is true? They grow slowly and are well-adapted to an environment.
29. Which of the following is an example of primary succession? the appearance of lichens and mosses in an area where a glacier
has recently melted away
30. One of the most common plants in a recently abandoned farm field is crabgrass.
31. Replacement of one type of community by another over time is succession.
32. Compare and contrast the two forms of succession.
The main difference between primary and secondary succession is that primary succession begins with the formation of soil.
Secondary succession begins on preexisting soil.