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Question (1)

QN002201

Winds are mainly formed due to differences in:

(A) Temperature only
(B) Humidity only
(C) Air pressure
(D) Cloud colour

Correct Answer: C

Explanation:

Winds are caused by differences in air pressure.

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Question (2)

QN002202

Air always moves from a region of:

(A) Low pressure to high pressure
(B) High pressure to low pressure
(C) High temperature to low temperature only
(D) Equal pressure to unequal pressure

Correct Answer: B

Explanation:

Air flows from high pressure to low pressure.

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Question (3)

QN002203

In the balloon activity, air moved from one balloon to another because:

(A) Both balloons had equal pressure
(B) One balloon had higher air pressure
(C) The straw absorbed air
(D) Gravity pushed the air

Correct Answer: B

Explanation:

Air moves from higher pressure to lower pressure.

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Question (4)

QN002204

A pressure difference of 400 Pa acts across an opening of area 2 m². What force is produced?

(A) 200 N
(B) 400 N
(C) 600 N
(D) 800 N

Correct Answer: D

Explanation:

Force = Pressure × Area = 400 × 2 = 800 N

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Question (5)

QN002205

The flow of air between two connected balloons stops when:

(A) Both balloons burst
(B) Pressure in both balloons becomes equal
(C) One balloon becomes heavier
(D) The straw bends

Correct Answer: B

Explanation:

Air flow stops when pressures become equal.

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Question (6)

QN002206

During daytime, land gets heated faster than water. As a result, the air above land becomes:

(A) Cooler and heavier
(B) Warmer and lighter
(C) Cold and dense
(D) Dry and heavier

Correct Answer: B

Explanation:

Warm air becomes lighter and rises.

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Question (7)

QN002207

A region where warm air rises usually develops:

(A) High pressure
(B) No pressure
(C) Low pressure
(D) Equal pressure

Correct Answer: C

Explanation:

Rising warm air creates low pressure.

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Question (8)

QN002208

Sea breeze occurs during the day because:

(A) Air moves from land to sea
(B) Air moves from sea to land
(C) Land remains cooler than sea
(D) Sea develops lower pressure than land

Correct Answer: B

Explanation:

Cooler air from sea moves toward land.

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Question (9)

QN002209

At night, land breeze blows from:

(A) Sea to land
(B) Land to sea
(C) North to south
(D) South to north

Correct Answer: B

Explanation:

At night air flows from land to sea.

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Question (10)

QN002210

A force of 1200 N acts due to pressure difference on an area of 6 m². Find the pressure difference.

(A) 20 Pa
(B) 50 Pa
(C) 200 Pa
(D) 7200 Pa

Correct Answer: C

Explanation:

Pressure = 1200 ÷ 6 = 200 Pa

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Question (1)

Winds are mainly formed due to differences in:

Explanation:

Link:

Question (2)

Air always moves from a region of:

Explanation:

Link:

Question (3)

In the balloon activity, air moved from one balloon to another because:

Explanation:

Link:

Question (4)

A pressure difference of 400 Pa acts across an opening of area 2 m². What force is produced?

Explanation:

Link:

Question (5)

The flow of air between two connected balloons stops when:

Explanation:

Link:

Question (6)

During daytime, land gets heated faster than water. As a result, the air above land becomes:

Explanation:

Link:

Question (7)

A region where warm air rises usually develops:

Explanation:

Link:

Question (8)

Sea breeze occurs during the day because:

Explanation:

Link:

Question (9)

At night, land breeze blows from:

Explanation:

Link:

Question (10)

A force of 1200 N acts due to pressure difference on an area of 6 m². Find the pressure difference.

Explanation:

Link:

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