PHNAVY BMC Lecture 4 - Atmospheric Temperature

Lecture 3: Atmospheric Pressure (Review)

Multiple Choice

A meteorologist at a weather station is using a device to measure atmospheric pressure. Which instrument is commonly used for this purpose?

• A) Barometer

• B) Anemometer

• C) Hygrometer

• D) Pyranometer

Multiple Choice

A weather observer at a remote mountain station records the atmospheric pressure reading as 980 hPa. What does this reading represent?

• A) Station pressure

• B) Mean sea level pressure

• C) Altitude pressure

• D) Surface pressure

Multiple Choice

What do isobars represent on a weather map?

• A) Lines of equal temperature

• B) Lines of equal humidity

• C) Lines of equal wind speed

• D) Lines of equal atmospheric pressure

Multiple Choice

How does temperature affect atmospheric pressure?

• A) Higher temperature increases atmospheric pressure

• B) Higher temperature decreases atmospheric pressure

• C) Temperature has no effect on atmospheric pressure

• D) Temperature affects atmospheric pressure indirectly

Multiple Choice

How does altitude affect atmospheric pressure?

• A) Atmospheric pressure increases with altitude

• B) Atmospheric pressure decreases with altitude

• C) Altitude has no effect on atmospheric pressure

• D) Altitude affects atmospheric pressure indirectly

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Multiple Choice

What happens to atmospheric temperature as altitude increases?

• A) It increases

• B) It decreases

• C) It remains constant

• D) It fluctuates randomly

Answer: B) It decreases

As altitude increases, the atmospheric temperature generally decreases. This is because the atmosphere becomes less dense at higher altitudes, and the reduced density leads to a decrease in heat-trapping greenhouse gases, resulting in lower temperatures.

Multiple Choice

Which of the following factors influences atmospheric temperature the most?

• A) Latitude

• B) Altitude

• C) Precipitation

• D) Ocean currents

Answer: B) Altitude

Altitude has a significant influence on atmospheric temperature. As mentioned earlier, temperature decreases with increasing altitude due to the decrease in atmospheric density. Latitude, precipitation, and ocean currents also affect temperature patterns, but altitude has a more direct and pronounced effect on temperature changes.

Multiple Choice

During the daytime, which surface tends to warm up faster?

• A) Land

• B) Ocean

• C) Both warm up at the same rate

• D) It depends on the geographical location

Answer: B) Altitude

Altitude has a significant influence on atmospheric temperature. As mentioned earlier, temperature decreases with increasing altitude due to the decrease in atmospheric density. Latitude, precipitation, and ocean currents also affect temperature patterns, but altitude has a more direct and pronounced effect on temperature changes.

Multiple Choice

What are nocturnal inversions?

• A) Rapid changes in atmospheric temperature during the night

• B) The reversal of wind direction during the night

• C) The cooling of the Earth's surface at night

• D) The trapping of cooler air near the ground during the night

Answer: D) The trapping of cooler air near the ground during the night

Nocturnal inversions refer to the phenomenon where a layer of cool air gets trapped near the ground during the night. As the Earth's surface cools down after sunset, the cooler air near the ground becomes denser and remains close to the surface. This inversion layer acts as a lid, preventing the mixing of air with the warmer air above. Nocturnal inversions are often associated with stable atmospheric conditions and can lead to the buildup of pollutants near the surface.

Multiple Choice

What is lapse rate?

• A) The rate at which temperature decreases with increasing altitude in the atmosphere

• B) The rate at which temperature increases with increasing altitude in the atmosphere

• C) The rate at which temperature changes throughout the day

• D) The rate at which temperature changes during a specific weather event

Answer: A) The rate at which temperature decreases with increasing altitude in the atmosphere

Lapse rate refers to the rate at which the temperature of the atmosphere changes with increasing altitude. In the troposphere, the lowest layer of the atmosphere, the average lapse rate is approximately 6.5 degrees Celsius per kilometer (or 3.6 degrees Fahrenheit per 1,000 feet). This means that for every kilometer increase in altitude, the temperature decreases by 6.5 degrees Celsius on average.

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Multiple Choice

What is the diurnal temperature range?

• A) The difference between the highest and lowest temperature recorded during a day

• B) The average temperature observed over a 24-hour period

• C) The range of temperatures experienced during the night

• D) The temperature difference between two different locations

Multiple Choice

What does average temperature range represent?

• A) The difference between the highest and lowest temperatures recorded in a specific period

• B) The mean temperature observed over a particular duration

• C) The range of temperatures experienced during a specific season

• D) The temperature difference between two different geographic regions

Multiple Choice

What is mean monthly temperature?

• A) The average temperature observed throughout a single day

• B) The mean of the highest and lowest temperatures recorded in a month

• C) The average temperature observed over a particular month

• D) The temperature at noon during each day of the month

Multiple Choice

What does the annual range of temperature represent?

• A) The temperature difference between the warmest and coldest months in a year

• B) The average temperature throughout the year

• C) The temperature difference between two different years

• D) The temperature difference between two different regions

Multiple Choice

What is mean annual temperature?

• A) The average temperature observed over a single day

• B) The mean of the highest and lowest temperatures recorded in a year

• C) The average temperature observed throughout the year

• D) The temperature at noon during each day of the year

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