1. Science
Review

2. Which word names chemicals that provide nutrients to the
soil to help crops grow better?
terracing
smog
sewage
D. fertilizer 1

3. Which word names a mixture of smoke, water vapor and chemicals?
drought
windbreaks
smog
D. tributary 2

4. Which word names the act of preserving or
protecting natural resources?
contour plowing
conservation
acid rain
D. natural resources 3

5. Which word explains how
farmers plant strips of grass or clover between strips of crops?
crop rotation
strip cropping
drought
D. renewable resources 4

6. Which word names chemicals that kill crop-destroying organisms such as
beetles or worms?
pesticides
sewage
crop rotation
D. compost 5

7. stream of water flowing into a larger river or lake?
Which word is a river or
stream of water flowing
into a larger river or lake?
fertilizer
pollution
tributary
D. terracing 6

8. Which word names water and human wastes that are washed down sinks, toilets and showers?
sewage
compost
conservation
D. strip cropping 7

9. nonrenewable resource D. pollution
Which word explains a resource that cannot be replaced within a lifetime?
renewable resource
conservation
nonrenewable resource
D. pollution 8

10. Which word names rows of trees or fences that stop the wind
from carrying soil away?
acid rain
natural resources
compost pile
D. windbreaks 9

11. building up of the soil to
Which word means the
building up of the soil to
form level places that look like a series of steps going up a hill?
terracing
crop rotation
pollution
D. fertilizer 10

12. changing of planted crops
Which word names the
changing of planted crops
from year to year to build up nutrients in the soil?
natural resource
crop rotation
renewable resource
D. pollution 11

13. Which word names the planting of crops along the curves of sloping land, not down the slopes?
contour plowing
pesticides
terracing
D. acid rain 12

14. Which word names a mixture of decaying organic matter used to provide nutrients to the soil?
drought
sewage
natural resource
D. compost 13

15. replaced within a lifetime?
Which word names a
resource that can be
replaced within a lifetime?
acid rain
renewable resource
contour plowing
D. crop rotation 14

16. crop rotation acid rain tributary D. natural resources
Which word names something such as a forest, mineral deposit, or fresh water that is found in nature and is necessary or useful to humans?
crop rotation
acid rain
tributary
D. natural resources 15

17. acid rain sewage drought D. conservation
Which word names a type of precipitation containing acids that
form in the atmosphere when
industrial gas emissions combine
with evaporated water?
acid rain
sewage
drought
D. conservation 16

18. Which word names a change in the environment that is
harmful to living things?
natural resource
terracing
pollution
D. fertilizer 17

19. Which word names the long period of low rainfall that affects growing or living things?
compost
pollution
pesticides
D. drought 18

20. Which of the following choices is a natural resource?
glass
plant
paper
D. leather 19

21. non-renewable resources?
Why are fossil fuels
non-renewable resources?
because they take millions of years to replace
because they can be used over and over again
because they are used to light and heat homes
D. because they cause air and water pollution 20

22. How is having a yard sale good for the environment?
because you will make money at your yard sale
because your toys are good for the environment
because you will use up more natural resources
D. because other people can reuse your toys 21

23. Which item breaks down more easily into the environment?
a water bottle
an apple core
an aluminum can
D. batteries 22

24. What happens when you reduce, reuse and recycle?
You collect different fossil fuels.
You conserve natural resources.
You find non-renewable resources.
D. You destroy many animal habitats. 23

25. Choose things that use less packaging.
What can you do
to reduce waste?
Choose things that use less packaging.
Buy new books and electronic equipment.
Use things once and then throw them out.
D. Care for people who live in your community. 24

26. Eat more fruits and vegetables. Recycle all glass and metal.
If you packed your lunch in a
paper bag every day,
what could you do
differently to save paper?
Eat more fruits and vegetables.
Recycle all glass and metal.
Ride the bus to school each day.
D. Use a reusable lunch box. 25

27. to search to pollute to recycle D. to clean up
People can contaminate an
area with harmful chemicals.
What does contaminate mean?
to search
to pollute
to recycle
D. to clean up 26

28. sanitary landfills surrounded by layers of plastic and clay?
Why is the garbage in
sanitary landfills surrounded by layers of plastic and clay?
to prevent the tops of the landfills from eroding away
to prevent waste from leaking out of the landfills
to prevent the waste from getting too hot or too cold
D. to protect the landfill against earthquakes 27

29. What can you infer from the fact that smog mainly affects cities?
People in cities drive more often than people in rural areas.
Air pollution is most serious in areas with many factories.
Air pollution never affects rural areas.
D. People foolishly built cities in areas with heavy smog. 28

30. Why are trees considered
natural resources?
They grow back after they are cut down.
They are an important source of firewood for campfires.
They provide valuable shade that no other resources do.
D. Humans use them to produce products like paper and lumber. 29

31. can kill entire species?
What can you infer from the fact that minor changes in water temperature
can kill entire species?
Many species are extremely sensitive to environment changes.
Many species that live in water once lived on land.
Many species have extremely weak immune systems.
D. Many species are not well-suited to their natural habitats. 30

32. Which of the following is a renewable natural resource?
oil
rock
wind
D. coal 31

33. Which of the following is a true statement about recycling?
Recycling allows resources to be reused, instead of dumped in landfills.
Recycling turns non-renewable resources into renewable resources.
Recycled products emit oxygen into the atmosphere.
D. Recycling causes the earth to cool down, instead of warming up. 32

34. covering this material?
When is your test
covering this material?
Saturday
Friday
Thursday
D. Wednesday 33

35. vocabulary and definitions. Also look over your
Be sure to study your
vocabulary and definitions.
Also look over your
natural resource booklet
and packet of notes.