Air and Water Test 1

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Air and Water Test 1

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Weekly Quiz Competition

Question 1
1 / -0

The burning of fire needs

A
oxygen

B
carbon dioxide

C
nitrogen

D
water vapour

Solution

The burning of fire needs oxygen.
Question 2
1 / -0

Which of the following is NOT true regarding the properties of air?

A
Air occupies space.

B
Air exerts pressure.

C
Air has no mass.

D
Air cannot be seen.

Solution

Air is a matter. It has mass.
Question 3
1 / -0

When Suresh blew air into a balloon it expanded. This shows that

A
air has no mass.

B
air fills space.

C
air has no weight.

D
air is visible.

Solution

Air occupies space.
Question 4
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Asma took two balloons. She blew air with mouth in one balloon and she filled another balloon with the vapours of boiling water. She released the two balloons and observed that the balloon with the hot vapours rose higher than the other balloon. What did she learn from this experiment?

A
Hot air is heavier than the cold air.

B
Water vapour give energy to the balloon.

C
Air likes hot balloons.

D
Hot air is lighter and therefore rises higher.

Solution

Hot air has less weight.
Question 5
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When we blow air into a balloon it expands. What is the reason?

A
Air is invisible.

B
Air does not occupy space.

C
Air has weight.

D
Air exerts pressure.

Solution

Air exerts pressure on the walls of the balloon and it expands.
Question 6
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Which of the following does NOT disturb the balance of gases in the air?

A
Cutting down trees and forests.

B
Releasing polluting gases into the air.

C
Growing trees.

D
Releasing smoke from the vehicles.

Solution

Trees and plants maintain the balance of gases in the air.
Question 7
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Which of the following changes weather?

A
The sun

B
Man

C
Wood

D
Television

Solution

The sun changes the weather conditions.
Question 8
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Directions For Questions

Read the data given below and answer questions 8 and 9. Jasmine conducted an experiment. She took two bowls of sand and water and placed them in sunlight. After an hour she noted the temperatures. Then she took both into her house and placed them where there was no light. She noted the temperatures again after one hour and made the following observations.

...view full instructions

What is the increase in the temperature of the sand after being placed for an hour in the sunlight?

A
30°C

B
36ºC

C
6°C

D
3ºC

Solution

There is an increase of 6ºC in the temperature of the sand after being placed for an hour in sunlight.
Question 9
1 / -0

Directions For Questions

Read the data given below and answer questions 8 and 9. Jasmine conducted an experiment. She took two bowls of sand and water and placed them in sunlight. After an hour she noted the temperatures. Then she took both into her house and placed them where there was no light. She noted the temperatures again after one hour and made the following observations.

...view full instructions

After being placed in sunlight for an hour, the air present above the sand bowl is ____ than the air above the water bowl.

A
warmer than

B
cooler than

C
equal in temperature

D
All of the above

Solution

After being placed in sunlight for an hour, the air present above the sand bowl is warmer than the air above the water bowl. Because the air above the sand gets warmer than the air above the water.
Question 10
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Answer questions 10 based on the following figure.

A
land breeze.

B
sea breeze.

C
movement of water.

D
movement of soil.

Solution

Arrow 1 represents land breeze.

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Re-Attempt Weekly Quiz Competition

Air and Water Test 1

Result

Air and Water Test 1

Score

-

Rank

-

SHARING IS CARING

Question 1

oxygen

carbon dioxide

nitrogen

water vapour

Solution

Question 2

Air occupies space.

Air exerts pressure.

Air has no mass.

Air cannot be seen.

Solution

Question 3

air has no mass.

air fills space.

air has no weight.

air is visible.

Solution

Question 4

Hot air is heavier than the cold air.

Water vapour give energy to the balloon.

Air likes hot balloons.

Hot air is lighter and therefore rises higher.

Solution

Question 5

Air is invisible.

Air does not occupy space.

Air has weight.

Air exerts pressure.

Solution

Question 6

Cutting down trees and forests.

Releasing polluting gases into the air.

Growing trees.

Releasing smoke from the vehicles.

Solution

Question 7

The sun

Man

Wood

Television

Solution

Question 8

30°C

36ºC

6°C

3ºC

Solution

Question 9

warmer than

cooler than

equal in temperature

All of the above

Solution

Question 10

land breeze.

sea breeze.

movement of water.

movement of soil.

Solution

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