Air is a mixture of many:
Gases
Germs
Dust
Vapour
Which is true?
Keep the windows closed
Should not play in open places
Should breathe in the smoke that people release while smoking
Use a handkerchief to cover our mouth while coughing
Germs are of how many types?
One
Two
Three
Four
Air pollution occurs:
When dust particles, fumes or odour are introduced into the atmosphere in a harmful way
By the dust particles in the air
By the gases present in the air
By the human waste
Which of the following type of dust does air contains?
Dust particles
Waste particles
Water drops
Which is the main source of heat and light on Earth?
Sun
Moon
Thunder
Equator
A very strong wind is called a:
Storm
Wind
Breeze
Hurricane
The best defense against germs is:
Good hygiene
Non hygiene
Anti hygiene
Exo hygiene
Wet clothes dry more quickly in the heat due to:
Condensation
Perspiration
Evaporation
Heating
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
