Mrs Leaf

Front 1

environmental science

Back 1

the study of how humans interact with the environment

Front 2

ecology

Back 2

study of how livings things interact with each other and with their nonliving environment

Front 3

agriculture

Back 3

the practice of growing, breeding, and caring for plants and animals that are used for food, clothing, housing, and transportation

Front 4

natural resource

Back 4

any natural materials used my humans

Front 5

pollution

Back 5

an undesired change in air, water, or soil that adversely affects the health, survival, or activities of humans or other organisms

Front 6

biodiversity

Back 6

refers to the number and variety of species that live in an area

Front 7

law of supply and demand

Back 7

states that the greater the demand for a limited supply of something

Front 8

ecological footprint

Back 8

shows the productive area of earth needed to support one person in a particular country

Front 9

sustainability

Back 9

the condition in which human needs are met in such a way that a human population can survive indefently

Front 10

geosphere

Back 10

the solid part of the earth that consists of all rock, and the soils and sediments or earth's surface

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crust

Back 11

earths thin outer layer

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mantle

Back 12

the layer beneath the crust. makes up about 64 percent of earths mass

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core

Back 13

earths inner most layer

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lithosphere

Back 14

earths outer layer

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asthenosphere

Back 15

the layer beneath the lithosphere

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tectonic plates

Back 16

the rigid outermost layer of the earth is divided into pieces called tectonic plates

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erosion

Back 17

the removal and transport of surface material is called erosion

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atmosphere

Back 18

earth is surrounded by a mixture of gases known as the atmosphere

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troposphere

Back 19

extends to 18 km above earths surface

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stratosphere

Back 20

extends from 18 km to an altitude of about 50 km

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ozone

Back 21

is a molecule that is made up of 3 oxygen atoms

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radiation

Back 22

the transfer of energy across space and in the atmosphere

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conduction

Back 23

the flow of heat from a warmer object to a colder object when the objects are placed in direct physical contact

Front 24

convention

Back 24

the transfer of heat by air currents

Front 25

greenhouse effect

Back 25

when gases trap heat near the earth

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water cycle

Back 26

the continious movement of water into the air, onto land, and then back to water sources

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evaporation

Back 27

the process by which liquid water is heated by the sun and then rises into the atmosphere as water vapor

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condensation

Back 28

water vapors forms water droplets on dust

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precipitation

Back 29

these larger droplets fall from clouds as rain

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salinity

Back 30

of ocean water is the concentration of all the dissolved salts it contains

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fresh water

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a little more than 3 percent of all the water on earth is fresh water

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biosphere

Back 32

the narrow layer around earths surface in which life can exist

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closed system

Back 33

energy enters the environment but matter does not

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open system

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both matter and energy are exchanged between a system and the surroundings.

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surface water

Back 35

is fresh water on earths land surface

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river system

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streams and rivers move across the land, they form a flowing network of water called river system

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watershed

Back 37

the area of land that is drained by a river

Front 38

groundwater

Back 38

water stored beneath the earths surface in sediment and rock formations.

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aquifer

Back 39

a under ground formation that contains groundwater

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porosity

Back 40

the amount of space between the particles that make up a rock

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permeablility

Back 41

the ability of rock or soil to allow water to flow through it

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recharge zone

Back 42

the area of the earths surface where water percolates down into the aquifer.

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potable

Back 43

safe to drink

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pathogens

Back 44

organisms that cause illness or disease

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irrigation

Back 45

a method of providing plants with water from sources other than direct precipitation

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dam

Back 46

a structure built across a river to control the river flows

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resevoir

Back 47

when a river is dammed, and artificial lake, or resevoir, is formed behind the dam.

Front 48

desalination

Back 48

the process of removing salt from salt water

Front 49

water pollution

Back 49

the introduction of chemical, physical, or biological agents into water that degrade water quality

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point source pollution

Back 50

pollution discharged from a single source

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non point source pollution

Back 51

comes from man different sources that are often difficult to identitfy

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wastewater

Back 52

water that contains waste from homes or industry

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artificial eutrophication

Back 53

Eutrophication caused by humans.

Front 54

thermal pollution

Back 54

when a temperature of a body of water increases

Front 55

biomagnification

Back 55

this accumilation of pollutants at successive levels of the food chain