Water Cycle

Q.

State the importance of water cycle in nature.

Q.

The ultimate source of all water on the earth is

(a) oceans and seas

(b) spring and wells

(c) rivers and lakes

(d) rain

Q. During summer, water kept in an earthen pot becomes cool. The phenomenon responsible for this is ______.

1. freezing
2. evaporation
3. boiling
4. melting

Q.

Water vapour does not influence the water cycle.

1. True
2. False

Q. Polar ice caps melt due to global warming.

1. True
2. False

Q. The circulation of water between ocean, land and atmosphere is known as :

1. rain cycle
2. oxygen cycle
3. water cycle
4. life cycle

Q. Which part of the water cycle includes in cloud formation?

1. precipitation
2. condensation
3. none of these
4. vaporisation

Q. The water cycle is driven by the:

1. moon
2. oceans
3. sun
4. clouds

Q.

Rain is the ultimate source of water.

1. True
2. False

Q. Describe the categories of the various source of water.

Q. Where does the energy that powers the water cycle come from?

1. the sun
2. plants
3. animals
4. electrical outlets

Q. Ground water is obtained from
(a) wells
(b) springs
(c) oceans
(d) seas

Q. "Water vapor" refers to :

1. solid state of water
2. invisible gaseous state of water
3. None of these
4. liquid state of water

Q. During evaporation, the state of a substance changes from:

1. liquid to gas
2. solid to liquid
3. solid to gas
4. gas to solid