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Flashcards in Chapter 18 Deck (42)
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1

Any natural material that is used by humans is a....

Natural Resource

2

What is a pollutant?

any harmful or unwanted substance that is released into the environment, such as CO2 or greenhouse gases

3

How can we reduce air pollution? (5 things)

By burning less fossil fuels(conserving them),
recycling
switching to renewable resources
planting crops that don't need fertilizers
Contour plowing - plowing on the sides of hills to prevent soil erosion

4

What happens when fertilizers enter streams?

the chemicals in there can harm a large variety of animals in the ecosystem and cause the algae population to grow, harming the fish population.

5

What is thought to cause Global Warming?

an increase of greenhouse gases/CO2 in the atmosphere

6

Name 3 renewable resources.

air, sunlight, animals, trees.

7

a liquid of complex hydrocarbon compounds is...

petroleum

8

all living things are made up of the element...

carbon

9

how is natural gas/petroleum formed?

the remains of organisms become buried under sediment, transforming it through high pressures.

10

Natural resources that humans use to generate energy are called...

energy resources

11

a nonrenewable energy resource formed from the remains of plants and animals that lived long ago is a...

fossil fuel

12

Why is it important to conserve fossil fuels?

it is a nonrenewable resource; once it's gone, we can't get it back.

13

How do microscopic sea organisms form petroleum and natural gas?

When they die, their remains settle on the ocean floor and are are buried by sediments. Over time, the organism will compact enough to transform into natural gas/ petroleum

14

Rocks through which fluids, such as petroleum or gas, can move are...

permeable rocks

15

How are petroleum and natural gas obtained?

by drilling wells

16

How is coal obtained?

through strip mining or surface mining

17

why are fossil fuels dangerous to our environment?

it releases greenhouse gases when burned, which causes Global Warming

18

The joining of two or more nuclei to form a larger nucleus is...

fusion

19

the process by which the nuclei of radioactive atoms are split into two or more smaller nuclei are called...

fission

20

How are nuclear power plants dangerous to the environment?

fission and fusion creates radioactive waste

21

What is conserving energy?

Not using a resource when you don't need to (E.G: turning lights off when you aren't in the room)

22

What is recycling?

recovering useful materials from waste or reusing them

23

Where does fusion happen naturally?

the sun

24

The energy released when a chemical compound reacts to produce new compounds is...

chemical energy

25

Is Biomass a renewable resource?

Yes; it comes from plants

26

Does geothermal energy cause pollution?

yes?

27

the most common way to release biomass energy is to...

burn it

28

alcohol can be mixed with gasoline to make a fuel called...

gasohol

29

Explain the process of obtaining geothermal energy.

liquid is sent down into the Earth where it is heated up and turns into steam and hot water, which can drive electric turbines or heat a building

30

how is hydroelectric energy obtained?

falling water spins a turbine, generating electrical energy