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Question (31)

QN0023532

Why do meteorologists use data from many weather stations?

(A) To obtain a wider picture of weather conditions
(B) To increase rainfall
(C) To reduce pressure
(D) To create storms

Correct Answer: A

Explanation:

Data from many stations improves forecast accuracy.

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Question (32)

QN0023533

A forecast predicts pressure dropping from 1012 mb to 998 mb. What is the decrease?

(A) 12 mb
(B) 13 mb
(C) 14 mb
(D) 15 mb

Correct Answer: C

Explanation:

Decrease = 1012 − 998 = 14 mb.

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Question (33)

QN0023534

Which of the following improves the accuracy of weather forecasting?

(A) Better observations and computer models
(B) Fewer measurements
(C) Less data collection
(D) Random guessing

Correct Answer: A

Explanation:

Improved observations and models increase forecast accuracy.

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Question (34)

QN0023535

A forecast predicts temperatures of 25°C, 27°C, 29°C and 31°C. What is the average forecast temperature?

(A) 27°C
(B) 28°C
(C) 29°C
(D) 30°C

Correct Answer: B

Explanation:

Average = (25 + 27 + 29 + 31) ÷ 4 = 28°C.

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Question (35)

QN0023536

A weather warning issued before a cyclone is an example of:

(A) Forecast application
(B) Soil conservation
(C) Irrigation planning
(D) Mineral exploration

Correct Answer: A

Explanation:

Forecasts are used to issue weather warnings.

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Question (36)

QN0023537

Forecast rainfall values for four days are 6 mm, 8 mm, 10 mm and 12 mm. What is the average forecast rainfall?

(A) 8 mm
(B) 9 mm
(C) 10 mm
(D) 11 mm

Correct Answer: B

Explanation:

Average = (6 + 8 + 10 + 12) ÷ 4 = 9 mm.

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Question (37)

QN0023538

Which weather forecast information is most useful for planning an outdoor sports event?

(A) Rainfall probability and temperature
(B) Population growth
(C) Crop production
(D) Soil texture

Correct Answer: A

Explanation:

Rainfall and temperature forecasts help event planning.

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Question (38)

QN0023539

A forecast predicts humidity values of 60%, 65% and 75%. What is the average forecast humidity?

(A) 65%
(B) 66.7%
(C) 67.5%
(D) 70%

Correct Answer: B

Explanation:

Average = (60 + 65 + 75) ÷ 3 = 66.7%.

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Question (39)

QN0023540

A forecast predicts wind speeds increasing from 18 km/h to 42 km/h. By how much is the increase?

(A) 20 km/h
(B) 22 km/h
(C) 24 km/h
(D) 26 km/h

Correct Answer: C

Explanation:

Increase = 42 − 18 = 24 km/h.

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Question (40)

QN0023541

The most important purpose of weather prediction is to:

(A) Help people make informed decisions and stay safe
(B) Control weather systems
(C) Stop storms from forming
(D) Increase atmospheric pressure

Correct Answer: A

Explanation:

Weather prediction helps people plan activities and stay safe from weather hazards.

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Question (31)

Why do meteorologists use data from many weather stations?

Explanation:

Link:

Question (32)

A forecast predicts pressure dropping from 1012 mb to 998 mb. What is the decrease?

Explanation:

Link:

Question (33)

Which of the following improves the accuracy of weather forecasting?

Explanation:

Link:

Question (34)

A forecast predicts temperatures of 25°C, 27°C, 29°C and 31°C. What is the average forecast temperature?

Explanation:

Link:

Question (35)

A weather warning issued before a cyclone is an example of:

Explanation:

Link:

Question (36)

Forecast rainfall values for four days are 6 mm, 8 mm, 10 mm and 12 mm. What is the average forecast rainfall?

Explanation:

Link:

Question (37)

Which weather forecast information is most useful for planning an outdoor sports event?

Explanation:

Link:

Question (38)

A forecast predicts humidity values of 60%, 65% and 75%. What is the average forecast humidity?

Explanation:

Link:

Question (39)

A forecast predicts wind speeds increasing from 18 km/h to 42 km/h. By how much is the increase?

Explanation:

Link:

Question (40)

The most important purpose of weather prediction is to:

Explanation:

Link:

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