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Question (31)

QN0023452

A weather observer records a maximum temperature of 38°C and minimum temperature of 26°C. What is the mean daily temperature?

(A) 30°C
(B) 31°C
(C) 32°C
(D) 33°C

Correct Answer: C

Explanation:

Mean temperature = (38 + 26) ÷ 2 = 32°C.

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Question (32)

QN0023453

A location receives rainfall of 4 mm, 8 mm and 12 mm on three consecutive days. What is the average rainfall?

(A) 6 mm
(B) 8 mm
(C) 10 mm
(D) 12 mm

Correct Answer: B

Explanation:

Average rainfall = (4 + 8 + 12) ÷ 3 = 8 mm.

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Question (33)

QN0023454

Which weather instrument would be most useful for predicting the approach of a depression?

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

Correct Answer: B

Explanation:

Falling atmospheric pressure measured by a barometer may indicate a depression.

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Question (34)

QN0023455

An airport pilot needs information about wind direction before take-off. Which instrument is most helpful?

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

Correct Answer: C

Explanation:

Wind vane or wind sock indicates wind direction.

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Question (35)

QN0023456

A farmer wants to know whether strong winds may dry the soil quickly. Which instrument should be checked?

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

Correct Answer: A

Explanation:

An anemometer measures wind speed.

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Question (36)

QN0023457

A weather station records maximum and minimum temperatures of 33°C and 19°C. What is the temperature range?

(A) 12°C
(B) 13°C
(C) 14°C
(D) 15°C

Correct Answer: C

Explanation:

Range = 33 − 19 = 14°C.

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Question (37)

QN0023458

Which weather instrument directly measures the depth of collected rainwater?

(A) Measuring tube of a rain gauge
(B) Wind vane
(C) Hygrometer
(D) Barometer

Correct Answer: A

Explanation:

The measuring tube and scale indicate rainfall depth.

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Question (38)

QN0023459

A barometer reading rises from 998 mb to 1010 mb. By how many millibars has the pressure increased?

(A) 10 mb
(B) 11 mb
(C) 12 mb
(D) 13 mb

Correct Answer: C

Explanation:

Increase = 1010 − 998 = 12 mb.

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Question (39)

QN0023460

Which combination correctly matches an instrument and the element measured?

(A) Hygrometer – Wind speed
(B) Anemometer – Rainfall
(C) Barometer – Atmospheric pressure
(D) Rain gauge – Humidity

Correct Answer: C

Explanation:

A barometer measures atmospheric pressure.

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Question (40)

QN0023461

An Automated Weather Station collects data from several sensors. Which of the following can it measure?

(A) Temperature, humidity, rainfall, wind and pressure
(B) Soil fertility only
(C) Population density
(D) Mineral resources

Correct Answer: A

Explanation:

An Automated Weather Station records multiple weather elements using sensors.

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Question (31)

A weather observer records a maximum temperature of 38°C and minimum temperature of 26°C. What is the mean daily temperature?

Explanation:

Link:

Question (32)

A location receives rainfall of 4 mm, 8 mm and 12 mm on three consecutive days. What is the average rainfall?

Explanation:

Link:

Question (33)

Which weather instrument would be most useful for predicting the approach of a depression?

Explanation:

Link:

Question (34)

An airport pilot needs information about wind direction before take-off. Which instrument is most helpful?

Explanation:

Link:

Question (35)

A farmer wants to know whether strong winds may dry the soil quickly. Which instrument should be checked?

Explanation:

Link:

Question (36)

A weather station records maximum and minimum temperatures of 33°C and 19°C. What is the temperature range?

Explanation:

Link:

Question (37)

Which weather instrument directly measures the depth of collected rainwater?

Explanation:

Link:

Question (38)

A barometer reading rises from 998 mb to 1010 mb. By how many millibars has the pressure increased?

Explanation:

Link:

Question (39)

Which combination correctly matches an instrument and the element measured?

Explanation:

Link:

Question (40)

An Automated Weather Station collects data from several sensors. Which of the following can it measure?

Explanation:

Link:

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