Winds, Storms and Cyclones-Air Expands on Heating (CBSE Class-7 Science): Questions 1 - 4 of 4

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Question number: 1

» Winds, Storms and Cyclones » Air Expands on Heating » Properties of Hot Air

MCQ▾

Question

Which property of the hot air makes it wet and cloudy?

Choices

Choice (4) Response
a.

Hot air is less dense

b.

Hot air is less heavy

c. Both a. and b. are correct
d. Question does not provide sufficient data or is vague

Question number: 2

» Winds, Storms and Cyclones » Air Expands on Heating » Properties of Hot Air

MCQ▾

Question

Air expands on heating and helps to:

Choices

Choice (4) Response
a.

Rise the hot air balloons up

b.

Feel cooler on a cloudy day

c. Both a. and b. are correct
d. None of the above

Question number: 3

» Winds, Storms and Cyclones » Air Expands on Heating » Cold Air

MCQ▾

Question

Cold air has high density and high pressure:

Choices

Choice (4) Response
a.

Because of uneven eating of earth

b.

Because molecules have lost their energy and pulled back in

c. Question does not provide sufficient data or is vague
d. None of the above

Question number: 4

» Winds, Storms and Cyclones » Air Expands on Heating » Hot Air

MCQ▾

Question

Hot air has:

Choices

Choice (4) Response
a.

Low density

b.

Low pressure

c. Both a. and b. are correct
d. Question does not provide sufficient data or is vague

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