Water Pollution/ Water Cycle/Greenhouse Gas

Question 1

Bacterial Pollution

Answer 1

The presence of bacteria in water supplies

Question 2

Nutrient Pollution

Answer 2

The presence of excess nutrient in the water

Question 3

Sediment pollution

Answer 3

the presence of excessive sediments such as silt and clay in water.

Question 4

Toxic pollution

Answer 4

the presence of toxic substances in water

Question 5

Water pollution

Answer 5

the introduction of harmful substances into water.

Question 6

Aquifer

Answer 6

an underground layer of porous rock and/or sand that contains water

Question 7

Condensation

Answer 7

Change from a gas to a liquid

Question 8

Evaporation

Answer 8

Change from liquid to a gas at temperatures below boiling.

Question 9

Freezing

Answer 9

Changing from a liquid to a solid

Question 10

Glacier

Answer 10

A large, slowly moving body of snow and ice

Question 11

Melting

Answer 11

Changing from a solid to a liquid

Question 12

Phase Change

Answer 12

A change from one state of matter to another

Question 13

Precipitation

Answer 13

water that falls to Earth’s surface.

Question 14

Reservoir

Answer 14

a body of water, often an artificial lake, which is used to store water for human use.

Question 15

Runoff

Answer 15

water that moves across the surfaces of land into steams or rivers.

Question 16

Transpiration

Answer 16

the release of water vapor from the leaves of plants

Question 17

Water Cycle

Answer 17

the continuous movement of water from Earth’s surface to the atmosphere and back again.

Question 18

Global Warming

Answer 18

a gradual increase in air temperatures neat Earth’s surface.

Question 19

Greenhouse effect

Answer 19

atmospheric heating caused by certain gases in Earth’s atmosphere that are transparent to sunlight but absorb and reflect heat that comes from Earth’s surface.

Question 20

Greenhouse gas

Answer 20

a gas in Earth’s atmosphere that absorbs and then re-radiates heat.

Question 21

Heat Flow

Answer 21

The transfer if thermal energy from a warmer object to a cooler object.