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Flashcards in Ch8 Deck (32):
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Is anything that occurs naturally in the environment that occurs naturally in the environment and is used by people

Natural resources

1

The top layer or dead leaves

Litter

2

Second layer is a mixture of rock fragments nutrients water air and decaying animal and plant matter

Topsoil

3

The third layer also contains rock fragments. Water and air but has less animal and plant matter than the topsoil

Subsoil

4

The last layer that makes up earths crust natural processes such as freezing and thawing Gradually break apart the bedrock

Bedrock

5

The process by which water wind or ice moves particles of rocks or soil is called

Erosion

6

When the soil becomes less fertile

Nutrient depletion

7

Includes nutrients that help crops grow better

Fertilizers

8

The advance of deserlike conditions into areas that previously were fertile is called

Desertification

9

Is a period when less rain then normal falls in an area

Drought

10

The process of restoring an area of land to amore productive state

Land reclamation

11

People cut down wood land to Harvey timber or clear the land for farms or ranches

Deforestation

12

Large area of land are developed as more and more people move to cities and suburbs

Urbanization

13

Pollutants or

Emissions

14

Is a thick brown haze formed when certain gases in te air react with sunlight

Photochemical smog

15

Form of oxygen which is toxic and is the major chemical found in smog

Ozone

16

When a layer of warm air prevents the rising air from escaping

Temperate inversion

17

Precipitation that is more acidic than normal because of air pollution

Acid rain

18

A colorless odorless gas that is radioactive

Radon

19

A layer of the upper atmosphere about 15-30 kilometers above earth

Ozone layer

20

Are human made gases that contain chlorine and fluorine

Chlorofluorocarbons

21

Streams and smaller rovers that feed into main rivers are called

Tributaries

22

The land area that supplies water to a river system is called a

Watershed

23

A lake that stores water for human use is called a

Reservoir

24

Over time nutrients can build up in the lake in a process called

Eutrophication

25

Materials that sand and gravel allow water to pass through they are known as

Permeable

26

Meaning water can't pass through it

Impermeable

27

The top water zine is called the

Unsaturated zone

28

The level where the pries in the ground are saturated with water

Saturated zone

29

The top of the saturated zine is the

Water table

30

Any underground layer or permeable rock or sediment that Hilda water and allows it to flow is called

Aquifer

31

Water rises on its own because of pressure within an aquifer

Artesian zone