78%
88%
98%
68%
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
The mixture of gases that makes up the Earth's atmosphere is called:
Water vapour
Air
Nitrogen
Hydrogen
Which of the following type of dust does air contains?
Dust particles
Waste particles
Water drops
Germs
Air supplies us with:
Carbon
Oxygen
The gaseous state of water is called:
Water vapor
Ice
Glaciers
Which is the main source of heat and light on Earth?
Sun
Moon
Thunder
Equator
The best defense against germs is:
Good hygiene
Non hygiene
Anti hygiene
Exo hygiene
What is formed when water vapor rises up in the sky?
Rain
Clouds
Breeze
Storm
When the air moves gently, it is called:
Wind
Hurricane
