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Heat Transfer (EES 199) Questions and
Answers (Expert Solutions)
Q: Which of the following is not a mechanism of heat transfer?
a) Radiation
b) Conduction
c) Convection
d) Condensation
ANS 🗹🗹: d) Condensation
Q: True of False:
Conduction is the transfer of heat through matter by direct contact.
ANS 🗹🗹: True
Q: The heat transfer mechanism that requires the movement of material is __________.
ANS 🗹🗹: Convection
Q: The primary source of heat for the Earth is ________.
ANS 🗹🗹: The Sun
Q: What happens to most of Sun's radiation as it passes through the top of the
atmosphere?
ANS 🗹🗹: Transmitted
Q: ______________ of the earth is warmed mostly by the surface of the Earth, not by
the Sun directly.
ANS 🗹🗹: Troposphere
Q: True or False
The fraction of the total radiation reflected by a surface is called its Albedo.
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ANS 🗹🗹: True
Q: True or False
The higher the albedo of an object, the more radiation it absorbs.
ANS 🗹🗹: False
Q: Which one of the following surfaces has the highest albedo?
a) Soil
b) Grass
c) Water
d) Snow
ANS 🗹🗹: d) Snow
Q: Why is it warmer during the day, cooler at night?
Why is it warmer at the tropics and cooler at the poles?
Why is it warmer in summer and cooler in winter?
ANS 🗹🗹: Earth and Sun's Relationship
Q: The most important factor in weather and climate:
ANS 🗹🗹: Unequal and variable heating of the Earth by the Sun
Q: What caused the variability?
ANS 🗹🗹: Earth's rotation
Q: Why is it colder at the poles than at the equator?
ANS 🗹🗹: More radiation at the equator
- Spherical shape of the earth, can't equally illuminate!
- The same amount of sunlight is spread over a greaterarea the farther from the
equator.
Q: The _____ makes certain hemisphere receiving more radiation.
ANS 🗹🗹: Tilt
Q: he Earth has a tilted rotation axis in relation to its _____________.
Heat Transfer (EES 199) Questions and
Answers (Expert Solutions)
Q: Which of the following is not a mechanism of heat transfer?
a) Radiation
b) Conduction
c) Convection
d) Condensation
ANS 🗹🗹: d) Condensation
Q: True of False:
Conduction is the transfer of heat through matter by direct contact.
ANS 🗹🗹: True
Q: The heat transfer mechanism that requires the movement of material is __________.
ANS 🗹🗹: Convection
Q: The primary source of heat for the Earth is ________.
ANS 🗹🗹: The Sun
Q: What happens to most of Sun's radiation as it passes through the top of the
atmosphere?
ANS 🗹🗹: Transmitted
Q: ______________ of the earth is warmed mostly by the surface of the Earth, not by
the Sun directly.
ANS 🗹🗹: Troposphere
Q: True or False
The fraction of the total radiation reflected by a surface is called its Albedo.
, Page | 2
ANS 🗹🗹: True
Q: True or False
The higher the albedo of an object, the more radiation it absorbs.
ANS 🗹🗹: False
Q: Which one of the following surfaces has the highest albedo?
a) Soil
b) Grass
c) Water
d) Snow
ANS 🗹🗹: d) Snow
Q: Why is it warmer during the day, cooler at night?
Why is it warmer at the tropics and cooler at the poles?
Why is it warmer in summer and cooler in winter?
ANS 🗹🗹: Earth and Sun's Relationship
Q: The most important factor in weather and climate:
ANS 🗹🗹: Unequal and variable heating of the Earth by the Sun
Q: What caused the variability?
ANS 🗹🗹: Earth's rotation
Q: Why is it colder at the poles than at the equator?
ANS 🗹🗹: More radiation at the equator
- Spherical shape of the earth, can't equally illuminate!
- The same amount of sunlight is spread over a greaterarea the farther from the
equator.
Q: The _____ makes certain hemisphere receiving more radiation.
ANS 🗹🗹: Tilt
Q: he Earth has a tilted rotation axis in relation to its _____________.
