Weather Air and Water

Name the gas present in the air in the maximum quantity

• oxygen

• carbon dioxide

• nitrogen

• water vapour

The ___________ causes changes in weather.

• Earth

• Sun

• Moon

• Other planets

Warmer air is lighter than cool air.

• True

• False

The amount of water vapour present in the air is called __________

• humidity

• moisture

• snow

• frost

I am formed during cold nights when dewdrops freeze. Who am I?

• Hail

• Snow

• Frost

• Fog

Identify the process by which clouds are formed

• Evaporation

• Collection

• Precipitation

• Condensation

Which of the following process will you choose first to purify the water shown in the picture?

• Decantation

• Chlorination

• Sedimentation

• Boiling

Identify the one which does not belong to the group of waterborne diseases.

• Cholera

• Tapeworm infection

• Diarrhoea

• Dengue

If the northern hemisphere of Earth is tilted towards the sun, what season would it be probably in the southern hemisphere?

• Summer

• Winter

• Spring

• Rainy

As the sun sets, the land cools faster than the sea. So the air from _________ blows to _________

• sea to land

• land to sea