Question 1

Instructions: Choose one answer from each pair of selections. A large wet-bulb depression measured with a sling psychrometer means that a LARGE | SMALL amount of water is evaporating from the wet-bulb thermometer into the air and that the relative humidity is low.

Accepted Answer

The answer of Instructions: Choose one answer from each pair...

Question 2

What does it mean when air is saturated?

Accepted Answer

The answer of What does it mean when air is...

Question 3

Hot air with a low relative humidity may actually contain more water vapor than cool air with a high relative humidity.

Accepted Answer

Relative humidity measures the amount of water vapor in the air compared to the maximum amount it can hold at that temperature. Therefore, hot air can hold more water vapor than cool air.

Question 4

Transpiration from plants and evaporation from soil, lakes, and streams account for the majority of the water vapor added to the atmosphere each year.

Accepted Answer

The answer of Transpiration from plants and evaporation from soil,...

Question 5

Instructions: Choose one answer from each pair of selections. Water departments in many cities in the desert southwest encourage their customers to water lawns early in the day. This is because the relative humidity is at its HIGHEST | LOWEST value in the morning and the rate of evaporation from wet soil will be relatively low.

Accepted Answer

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Question 6

Instructions: Choose one answer from each pair of selections. ADVECTION | RADIATION fog forms when the wind moves warm, moist air over a sufficiently colder surface and the moist air is cooled to its saturation point.

Accepted Answer

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Question 7

What happens to actual vapor pressure, saturation vapor pressure, and relative humidity when moist air is warmed?

Accepted Answer

The answer of What happens to actual vapor pressure, saturation...

Question 8

Describe lenticular clouds. Where are they frequently formed?

Accepted Answer

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Question 9

Instructions: Choose one answer from each pair of selections. When air is saturated, the rate of evaporation is GREATER THAN | EQUAL TO the rate of condensation.

Accepted Answer

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Question 10

Instructions: Choose one answer from each pair of selections. The ten principle cloud forms are divided into four primary cloud groups. Each of the four groups is identified by the HEIGHT | APPEARANCE of the clouds.

Accepted Answer

The answer of Instructions: Choose one answer from each pair...

Question 11

Instructions: Choose one answer from each pair of selections. Dew is more likely to form on nights that are CLEAR AND CALM | CLOUDY AND WINDY.

Accepted Answer

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Question 12

The relative humidity is often near 100% in the polar regions.

Accepted Answer

This is true because the polar regions are characterized by cold temperatures and high amounts of precipitation in the form of snow, which can lead to high levels of moisture in the air and therefore high relative humidity.

Question 13

Frost occurs when dew freezes.

Accepted Answer

Frost forms when water vapor in the air changes directly into ice crystals on a surface, not when dew freezes.

Question 14

Instructions: Choose one answer from each pair of selections. Halos are sometimes observed in thin, sheetlike, high clouds, composed of WATER | ICE particles.

Accepted Answer

The answer of Instructions: Choose one answer from each pair...

Question 15

Clouds can be accurately identified strictly on the basis of elevation.

Accepted Answer

Clouds can be identified based on their shape, size, color, texture, and location in addition to elevation.

Question 16

Describe the process of deposition.

Accepted Answer

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Question 17

Instructions: Choose one answer from each pair of selections. Humid air is slightly MORE | LESS dense than dry air with the same temperature.

Accepted Answer

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Question 18

Instructions: Choose one answer from each pair of selections. At polar latitudes, high and middle altitude clouds are generally CLOSER TO | FURTHER FROM the ground than at tropical latitudes.

Accepted Answer

The answer of Instructions: Choose one answer from each pair...

Question 19

Instructions: Choose one answer from each pair of selections. Most of the visibility problems that occur at airports, which can suspend flights and even close airports, are caused by COLD | WARM fogs.

Accepted Answer

The answer of Instructions: Choose one answer from each pair...

Question 20

Small particles of ordinary table salt are hygroscopic. What does hygroscopic mean and what is a likely natural source of salt particles?

Accepted Answer

The answer of Small particles of ordinary table salt are...

Quiz 4: Humidity, Condensation and Clouds

Instructions: Choose one answer from each pair of selections. A large wet-bulb depression measured with a sling psychrometer means that a LARGE | SMALL amount of water is evaporating from the wet-bulb thermometer into the air and that the relative humidity is low.

What does it mean when air is saturated?

Hot air with a low relative humidity may actually contain more water vapor than cool air with a high relative humidity.

Transpiration from plants and evaporation from soil, lakes, and streams account for the majority of the water vapor added to the atmosphere each year.

Instructions: Choose one answer from each pair of selections. ADVECTION | RADIATION fog forms when the wind moves warm, moist air over a sufficiently colder surface and the moist air is cooled to its saturation point.

What happens to actual vapor pressure, saturation vapor pressure, and relative humidity when moist air is warmed?

Describe lenticular clouds. Where are they frequently formed?

Instructions: Choose one answer from each pair of selections. When air is saturated, the rate of evaporation is GREATER THAN | EQUAL TO the rate of condensation.

Instructions: Choose one answer from each pair of selections. The ten principle cloud forms are divided into four primary cloud groups. Each of the four groups is identified by the HEIGHT | APPEARANCE of the clouds.

Instructions: Choose one answer from each pair of selections. Dew is more likely to form on nights that are CLEAR AND CALM | CLOUDY AND WINDY.

The relative humidity is often near 100% in the polar regions.

Frost occurs when dew freezes.

Instructions: Choose one answer from each pair of selections. Halos are sometimes observed in thin, sheetlike, high clouds, composed of WATER | ICE particles.

Clouds can be accurately identified strictly on the basis of elevation.

Describe the process of deposition.

Instructions: Choose one answer from each pair of selections. Humid air is slightly MORE | LESS dense than dry air with the same temperature.

Instructions: Choose one answer from each pair of selections. At polar latitudes, high and middle altitude clouds are generally CLOSER TO | FURTHER FROM the ground than at tropical latitudes.

Instructions: Choose one answer from each pair of selections. Most of the visibility problems that occur at airports, which can suspend flights and even close airports, are caused by COLD | WARM fogs.

Small particles of ordinary table salt are hygroscopic. What does hygroscopic mean and what is a likely natural source of salt particles?