Winds, Storms and Cyclones (CBSE Class-7 Science): Questions 21 - 27 of 27

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Question number: 21

» 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

Question number: 22

» Winds, Storms and Cyclones » Air » Wind

MCQ▾

Question

The instrument used to measure the speed of wind is called as:

Choices

Choice (4) Response

a.

Anemometer

b.

Wind vane

c.

Question does not provide sufficient data or is vague

d.

None of the above

Question number: 23

» Winds, Storms and Cyclones » Cyclones » Tornadoes

MCQ▾

Question

A violently rotating column of air extending from a thunderstorm to the ground is called as:

Choices

Choice (4) Response

a.

Tornedo

b.

Thunder

c.

Cyclone

d.

Thunderstorm

Question number: 24

» Winds, Storms and Cyclones » Wind Currents » Uneven Heating Between Equator and the Poles

MCQ▾

Question

Uneven heating between the equator and the poles forms

Choices

Choice (4) Response

a.

Westerlies

b.

Trade winds

c.

Wind circulation from the poles to the warmer latitudes

d.

All a. , b. and c. are correct

Question number: 25

» Winds, Storms and Cyclones » Air » Wind

MCQ▾

Question

Moving air is called as:

Choices

Choice (4) Response

a.

Lift

b.

Wind

c.

Wind current

d.

None of the above

Question number: 26

» Winds, Storms and Cyclones » Air » Air Exerts Pressure

MCQ▾

Question

Atmospheric pressure is defined as:

Choices

Choice (4) Response

a.

The pressure exerted by the gases in the atmosphere on the surface of the earth

b.

Moving air

c.

Air that covers the earth in a thick blanket

d.

Force per unit area exerted by a gas

Question number: 27

» Winds, Storms and Cyclones » Air » High Speed Winds and Reduced Air Pressure

MCQ▾

Question

Lift is defined as:

Choices

Choice (4) Response

a.

The less the speed of the wind, the lesser will be the air pressure

b.

The more the speed of the wind, the lesser will be the air pressure

c.

The low pressure created by rising warm air and falling cool air

d.

None of the above

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