Science Review

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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.