The process by which a substance change from solid state to liquid is called:
Melting
Freezing
Evaporation
Condensation
What causes storm?
Slow wind with rains
Strong winds with thunder and rains
Dark clouds and rains
Heavy rains
Which breeze blows from the land towards the sea at night?
Land breeze
Sea breeze
Ocean breeze
Air breeze
How is wind produced?
When Sun rays are blocked by the clouds
When cool air rises up
When water vapor in the air rises up
When hot air rises up
Air is a mixture of many:
Gases
Germs
Dust
Vapour
Why should not we waste water?
Because there is lot of water on earth
Because there is no water on earth
Because water resources on earth are getting dry
Because lot of water is getting polluted
What is formed when water vapor rises up in the sky?
Rain
Clouds
Breeze
Storm
What percentage of air consist of nitrogen?
78%
88%
98%
68%
The mixture of gases that makes up the Earth's atmosphere is called:
Water vapour
Air
Nitrogen
Hydrogen
The condition of a place at a given time, in relation to heat, cloudiness, wind, rain and cold is:
Season
Humidity
Climate
Weather
