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Question (21)

QN0023442

The pointer of a wind vane turns toward the:

(A) Direction of the wind
(B) Sun
(C) Lowest pressure only
(D) Rain clouds only

Correct Answer: A

Explanation:

The pointer turns in the direction from which the wind is blowing.

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Question (22)

QN0023443

Which instrument measures wind speed?

(A) Wind vane
(B) Hygrometer
(C) Anemometer
(D) Barometer

Correct Answer: C

Explanation:

An anemometer measures wind speed.

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Question (23)

QN0023444

An anemometer with rapidly spinning cups indicates:

(A) Low humidity
(B) Heavy rainfall
(C) Strong winds
(D) High temperature

Correct Answer: C

Explanation:

Faster rotation indicates stronger winds.

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Question (24)

QN0023445

If an anemometer records 40 km/h and later 65 km/h, by how much has wind speed increased?

(A) 15 km/h
(B) 20 km/h
(C) 25 km/h
(D) 30 km/h

Correct Answer: C

Explanation:

Increase = 65 − 40 = 25 km/h.

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Question (25)

QN0023446

Wind speed is generally expressed in:

(A) mb
(B) °C
(C) %
(D) km/h

Correct Answer: D

Explanation:

Wind speed is measured in kilometres per hour (km/h).

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Question (26)

QN0023447

Which instrument measures relative humidity?

(A) Hygrometer
(B) Thermometer
(C) Rain gauge
(D) Barometer

Correct Answer: A

Explanation:

A hygrometer measures humidity.

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Question (27)

QN0023448

Relative humidity is measured in:

(A) Millibars
(B) Degrees Celsius
(C) Percentage
(D) Kilometres per hour

Correct Answer: C

Explanation:

Humidity is expressed as a percentage.

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Question (28)

QN0023449

Air saturated with water vapour has a relative humidity of:

(A) 0%
(B) 50%
(C) 75%
(D) 100%

Correct Answer: D

Explanation:

Saturated air has 100% relative humidity.

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Question (29)

QN0023450

If the humidity of City A is 35% and City B is 75%, which city has more water vapour in the air?

(A) City A
(B) City B
(C) Both equal
(D) Cannot be determined

Correct Answer: B

Explanation:

Higher relative humidity indicates more water vapour.

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Question (30)

QN0023451

A museum wants to preserve old exhibits in a dry environment. Which instrument should it monitor regularly?

(A) Rain gauge
(B) Thermometer
(C) Hygrometer
(D) Wind vane

Correct Answer: C

Explanation:

Museums monitor humidity using a hygrometer.

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Question (21)

The pointer of a wind vane turns toward the:

Explanation:

Link:

Question (22)

Which instrument measures wind speed?

Explanation:

Link:

Question (23)

An anemometer with rapidly spinning cups indicates:

Explanation:

Link:

Question (24)

If an anemometer records 40 km/h and later 65 km/h, by how much has wind speed increased?

Explanation:

Link:

Question (25)

Wind speed is generally expressed in:

Explanation:

Link:

Question (26)

Which instrument measures relative humidity?

Explanation:

Link:

Question (27)

Relative humidity is measured in:

Explanation:

Link:

Question (28)

Air saturated with water vapour has a relative humidity of:

Explanation:

Link:

Question (29)

If the humidity of City A is 35% and City B is 75%, which city has more water vapour in the air?

Explanation:

Link:

Question (30)

A museum wants to preserve old exhibits in a dry environment. Which instrument should it monitor regularly?

Explanation:

Link:

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