Air and Water Support Life

Question 1

The process by which particles in a liquid clump together; a step in drinking water treatment

Answer 1

Coagulation

Question 2

The process of passing water through layers of sand, gravel and activated charcoal to remove impurities from the water.

Answer 2

Filtration

Question 3

Deposits of fine solids that settle out from waste water during the treatment process

Answer 3

Sludge

Question 4

Chemical added in drinking water treatment

Answer 4

Alum

Question 5

Material added to kill microrganisms in water treatment

Answer 5

Chlorine

Question 6

Water that is safe to drink

Answer 6

Potable water

Question 7

Settling down of mud particles

Answer 7

Sedimentation

Question 8

Boiling and cooling the steam

Answer 8

Distillation

Question 9

Method by which insoluble impurities are removed by passing through filter paper

Answer 9

Filtration

Question 10

Settling down of mud particles

Answer 10

Decantation

Question 11

Layer of air surrounding the Earth

Answer 11

Atmosphere

Question 12

It is often thought of as the “zone of weather”. All of the precipitation, winds, storms, and clouds are seen in this layer of atmosphere

Answer 12

Troposphere

Question 13

Jet aircrafts fly in this layer

Answer 13

Stratosphere

Question 14

Space shuttle orbit in this layer

Answer 14

Thermosphere

Question 15

Layer of atmoshpere which contains Ozone layer

Answer 15

Stratosphere

Question 16

Layer of atmosphere which contains least amount of air

Answer 16

Exosphere

Question 17

The amount of watervapour in the air.

Answer 17

Humidity