Exam 3: Temperature and Humidity Extremes

arrow
  • Select Tags
search iconSearch Question
flashcardsStudy Flashcards
  • Select Tags

Hypothermia is most common in cold,dry weather.

Free
(True/False)
4.8/5
(90)
Correct Answer:
Verified

False

An air temperature of 70o F feels quite comfortable.If you were in 70o F water,it would feel cold.Explain why.

Free
(Short Answer)
5.0/5
(72)
Correct Answer:
Answered by Examlex AI Copilot

The sensation of temperature is subjective and depends on various factors, including the medium through which heat is transferred to or from the body. In the case of air at 70°F, it is considered a comfortable temperature for most people because it is close to the average skin temperature, which is approximately 93°F. At this temperature, the heat transfer between the air and the skin is relatively balanced, so the body does not need to expend much energy to maintain its core temperature.

However, when you are in water at the same temperature of 70°F, it feels much colder than air at the same temperature. This is because water is a much better conductor of heat than air. Water can transfer heat away from the body about 25 times more efficiently than air due to its higher density and specific heat capacity. As a result, when you are immersed in 70°F water, heat is drawn away from your body more quickly, leading to a faster decrease in your body temperature.

The body reacts to this rapid heat loss by perceiving the water as being cold, even though the temperature is the same as what would be a comfortable air temperature. This is why you can feel chilly in water at 70°F, while you would feel comfortable at the same temperature in the air. Additionally, the body's response to cold water includes vasoconstriction (narrowing of blood vessels), which reduces blood flow to the skin and extremities to conserve heat, further enhancing the sensation of cold.

Low clouds retard surface cooling at night better than clear skies because:

Free
(Multiple Choice)
4.9/5
(92)
Correct Answer:
Verified

A

In most areas the warmest time of the day close to the ground occurs in the afternoon between 2 and 5 pm.

(True/False)
4.9/5
(74)

The lowest temperature is usually observed:

(Multiple Choice)
4.9/5
(82)

At what time during a 24-hour day would a radiation temperature inversion best be developed?

(Multiple Choice)
4.8/5
(79)

Which of the following statements is not correct?

(Multiple Choice)
4.8/5
(75)

Explain why it is possible to see frost on the ground or on the tops of parked automobiles even though the measured nighttime minimum temperature remains above 32o F.

(Short Answer)
4.8/5
(88)

Lines on a weather map connecting points of equal temperature are called isotherms.

(True/False)
4.8/5
(76)

Water warms and cools much more slowly than land because it takes more heat to raise the temperature of a given amount of water 1oC than it does to raise the temperature of soil 1oC.

(True/False)
4.7/5
(74)

Assuming that the night will remain clear,calm and unsaturated,the predicted minimum temperature is 32oF.Suddenly the wind speed increases and remains gusty throughout the night.The minimum temperature will most likely be higher than predicted due to the release of latent heat.

(True/False)
4.9/5
(76)

In summer,humid regions typically have smaller daily temperature ranges and lower maximum temperatures than drier regions.

(True/False)
4.7/5
(85)

Which of the following statements is/are true?

(Multiple Choice)
4.9/5
(75)

An ideal shelter for housing a temperature-measurement instrument should be white and in the shade.

(True/False)
4.9/5
(79)

The maximum in daytime surface temperature typically occurs _______ the earth receives its most intense solar radiation.

(Multiple Choice)
4.9/5
(79)

In meteorology,the term thermal belt refers to the extreme heat sometimes found inside a car.

(True/False)
4.9/5
(81)

Why don't wind chill temperature charts include temperatures above 40 o F?

(Short Answer)
4.9/5
(72)

How is it possible for the ground to become warmer than the air just above during the day and then turn colder than the air above during the night?

(Short Answer)
4.8/5
(69)

If you lived in the Arizona desert,would you want to own a black car? Why or why not? What might be a better color?

(Short Answer)
5.0/5
(79)

Over the earth as a whole,one would expect to observe the smallest variation in temperature from day to day and from month to month:

(Multiple Choice)
4.7/5
(85)
Showing 1 - 20 of 39
close modal

Filters

  • Essay(0)
  • Multiple Choice(0)
  • Short Answer(0)
  • True False(0)
  • Matching(0)