Chapter 9 - Weather and Water Quiz

The Earth rotates on its _________. This _________ causes day and night. The _____ of the Earth is tilted.

• Earth, rotation, axis

• Sun, Moon, Axis

How many factors are there for affecting the Rate of Evaporation?

• 2

• 1

• 8

• 4

• 10

Name anyone factor of affecting the Rate of Evaporation.

What is Condensation?

What is Dew?

• At night, when it is cold, things like grass and leaves also become cold. So, water vapour present in air condenses on them in the form of tiny water droplets. We call them dew.

• When the water becomes too much for the clouds to hold, it falls to the ground as dew.

• The water vapour present in air to freeze and deposit itself on grass or leaves in the form of white powdery mass is called dew.

During the day, The land gets _______ quickly. It ____ up the air above it. As ___ air is lighter, it rises up. The water in the sea does not get _________. So, the air above is _________. The cool air from the sea rushes to occupy the space of the _____ air. So, a cool breeze blows towards the land from the sea during the day. This is called _________________.

• heated, heats, hot air, heated, is cool, warm, sea breeze

• cooled, cools, cool air, cooled, is warm, cool, sea breeze

How many methods are there to purify water?

• 3

• 5

• 10

• 1,00,000

Which are the best methods to purify water?

• Boiling, Filtration, Chlorination

• Sedimentation, Decantation, Filtration

• Polluting, Dirty Water

When the water becomes too much for the clouds to hold, it falls to the ground as ____.

• Dew

• Rain

• Frost

• Mist and Fog

What are impurities?

• The germs present in water.

• Clean and Pure Water.