Unit 5 science test review

Question 1

What part of earth absorbs the Most sunlight?

Answer 1

oceans

Question 2

What is one important role that ocean waters have in heating Earth?

Answer 2

absorb and transport solar energy

Question 3

What is one disadvantage of desalination?

Answer 3

The process uses fuel that is expensive.

Question 4

Which is a negative effect of deforestation on the environment?
Habitat restoration 
desertification
soil production 
urbanization

Answer 4

desertification

Question 5

What is the most effective way to protect drylands from desertification?

Answer 5

planting tree belts

Question 6

What term refers to the practice of renewing destroyed ecosystems?

Answer 6

habitat restoration

Question 7

Which challenge arises from trying to protect the environment?

Answer 7

high clean- energy startup costs

Question 8

Which is an important question to consider when creating an environmental policy?

Answer 8

Is the benefit worth the cost?

Question 9

Which is a result of topsoil loss?

Answer 9

poor crop production

Question 10

What is a common ingredient in fertilizer?

Answer 10

gypsum

Question 11

What is a major goal of the federal government when managing land resources?

Answer 11

conservation

Question 12

Which factor is a major contributor to outdoor air pollution?

Answer 12

fossil fuels

Question 13

Which factor would increase poor indoor air quality?

Answer 13

carbon monoxide

Question 14

What was the main reason for creating the EPA?

Answer 14

enforce the clean air act

Question 15

Which resource is sometimes unpredictable in terms of energy production?

Answer 15

wood

Question 16

Which resource is a nonrenewable resource?
water
trees
sun 
metal

Answer 16

metal

Question 17

Which is a resource that the National Park Service manages?

Answer 17

memorials

Question 18

Which federal agency helps foreign governments with international conservation efforts?

Answer 18

US Fish and Wildlife Service

Question 19

Which mineral resource is used to make baby powder

Answer 19

talc

Question 20

Which term refers to the loss of fertile soil from drying out?

Answer 20

desertification

Question 21

Which three gases are released into the atmosphere when volcanoes erupt?

Answer 21

nitrogen, water vapor, carbon dioxide

Question 22

Which step of desalination must be done before water is condensed and collected?

Answer 22

water is heated until it is evaporated

Question 23

Which activity uses water for both recreational and industrial purposes?

Answer 23

fishing

Question 24

Where would you use drip irrigation?

Answer 24

dry or desert areas

Question 25

Which solution would help local farms if the water level in a reservoir used for irrigation became low?

Answer 25

Build wind-powered pumps to use groundwater

Question 26

Which environmental policy must consider the expensive startup costs associated with building machines that harvest energy from clean sources?

Answer 26

reducing air pollution

Question 27

How does the construction of dams positively affect natural resources?

Answer 27

by preventing flooding, creating reservoirs, and providing water for irrigation

Question 28

Which best explains the effect of reforestation on land?

Answer 28

It restores trees to areas where they once grew.

Question 29

How does urbanization contribute to pollution?

Answer 29

There are more people in urban areas, which leads to more consumption of energy, food, and water.

Question 30

Which statement explains how smog forms?

Answer 30

Sunlight and heat react with gases in the atmosphere.