Practice MCQs | Chapter 9 Atmospheric Circulation and Weather Systems

MCQ Page Ref: Page 76

Atmospheric pressure is caused by:

A. Earth’s rotation only

B. Weight of air

C. Ocean currents only

D. Solar eclipses only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 76

MCQ Page Ref: Page 76

Atmospheric pressure decreases with:

A. Increase in temperature only

B. Increase in altitude

C. Increase in rainfall only

D. Increase in humidity only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 76

MCQ Page Ref: Page 76

The instrument used to measure atmospheric pressure is:

A. Hygrometer

B. Thermometer

C. Barometer

D. Anemometer

Correct Answer / Reference:

Option: C

Reference: Found on Page Page 76

MCQ Page Ref: Page 77

Air moves from:

A. Low pressure to high pressure

B. High pressure to low pressure

C. Equator to poles only

D. Oceans to deserts only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 77

MCQ Page Ref: Page 77

The horizontal movement of air is called:

A. Convection

B. Radiation

C. Wind

D. Condensation

Correct Answer / Reference:

Option: C

Reference: Found on Page Page 77

MCQ Page Ref: Page 77

Which force deflects winds due to Earth’s rotation?

A. Frictional force

B. Gravitational force

C. Coriolis force

D. Centripetal force

Correct Answer / Reference:

Option: C

Reference: Found on Page Page 77

MCQ Page Ref: Page 77

According to Ferrel’s Law, winds are deflected to the right in:

A. Southern Hemisphere

B. Northern Hemisphere

C. Equatorial region only

D. Polar region only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 77

MCQ Page Ref: Page 78

The trade winds blow from:

A. Equator to poles

B. Subtropical high pressure belts to equatorial low pressure belt

C. Polar regions to equator only

D. Westerlies to polar regions only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 78

MCQ Page Ref: Page 78

The calm zone near the equator is known as:

A. Horse latitudes

B. Doldrums

C. Roaring forties

D. Polar front

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 78

MCQ Page Ref: Page 78

Westerlies blow from:

A. East to west

B. West to east

C. Equator to poles

D. Poles to equator only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 78

MCQ Page Ref: Page 78

The Roaring Forties are associated with:

A. Trade winds

B. Polar winds

C. Westerlies

D. Monsoon winds

Correct Answer / Reference:

Option: C

Reference: Found on Page Page 78

MCQ Page Ref: Page 78

Polar easterlies originate from:

A. Equatorial low pressure belt

B. Polar high pressure belt

C. Subtropical high pressure belt

D. Temperate low pressure belt

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 78

MCQ Page Ref: Page 79

Monsoon winds reverse direction mainly due to:

A. Ocean currents

B. Differential heating of land and water

C. Earthquakes

D. Volcanoes

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 79

MCQ Page Ref: Page 79

Local winds develop due to:

A. Global pressure belts only

B. Local temperature and pressure differences

C. Ocean salinity only

D. Earth’s revolution only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 79

MCQ Page Ref: Page 79

A warm and dry local wind in Alps is called:

A. Chinook

B. Loo

C. Foehn

D. Mistral

Correct Answer / Reference:

Option: C

Reference: Found on Page Page 79

MCQ Page Ref: Page 79

The hot and dry summer wind in northern India is called:

A. Chinook

B. Foehn

C. Loo

D. Blizzard

Correct Answer / Reference:

Option: C

Reference: Found on Page Page 79

MCQ Page Ref: Page 80

Cyclones are associated with:

A. High pressure

B. Low pressure

C. Calm conditions only

D. Anticyclonic conditions only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 80

MCQ Page Ref: Page 80

Air in a cyclone moves:

A. Downward and outward

B. Upward and inward

C. Horizontally only

D. Downward only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 80

MCQ Page Ref: Page 80

Anticyclones are generally associated with:

A. Cloudy weather

B. Heavy rainfall

C. Clear skies

D. Thunderstorms only

Correct Answer / Reference:

Option: C

Reference: Found on Page Page 80

MCQ Page Ref: Page 81

Tropical cyclones derive energy mainly from:

A. Cold ocean currents

B. Warm ocean waters

C. Mountains only

D. Polar winds only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 81

MCQ Page Ref: Page 81

Temperate cyclones generally form along:

A. Equatorial region

B. Polar front

C. Tropical deserts only

D. Mountain tops only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 81

MCQ Page Ref: Page 81

The eye of a cyclone is characterized by:

A. Maximum rainfall

B. Calm conditions

C. Strongest winds

D. Snowfall only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 81

MCQ Page Ref: Page 77

Which force controls wind speed gradient?

A. Gravitational force

B. Pressure gradient force

C. Magnetic force

D. Friction only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 77

MCQ Page Ref: Page 78

Horse latitudes are regions of:

A. Low pressure

B. Calm winds and high pressure

C. Heavy rainfall

D. Cyclonic storms only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 78

MCQ Page Ref: Page 80

Cyclonic circulation is clockwise in:

A. Northern Hemisphere

B. Southern Hemisphere

C. Equatorial region only

D. Arctic region only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 80

MCQ Page Ref: Page 78

Which wind belt lies between 30° and 60° latitude?

A. Trade winds

B. Westerlies

C. Polar easterlies

D. Monsoon winds

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 78

MCQ Page Ref: Page 77

The pressure gradient force becomes stronger when:

A. Pressure difference decreases

B. Pressure difference increases

C. Temperature decreases only

D. Humidity decreases only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 77

MCQ Page Ref: Page 81

Which condition is necessary for tropical cyclone formation?

A. Cold oceans

B. Warm and moist air

C. High latitude location

D. Dry continental climate

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 81

MCQ Page Ref: Page 80

The descending air in anticyclones causes:

A. Cloud formation

B. Clear weather

C. Heavy rainfall

D. Thunderstorms only

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 80

MCQ Page Ref: Page 78

Planetary winds are also known as:

A. Local winds

B. Permanent winds

C. Seasonal winds

D. Variable winds

Correct Answer / Reference:

Option: B

Reference: Found on Page Page 78