Exam III Material Flashcards
Materials that condense into a solid (or liquid) only at very low
temperatures are called volatile materials.
True or False?
True
The spectral lines observed from a fast spinning star will appear
broadened compared to those from a slowly spinning star (assume everything is the
same between the two stars except their spin rates).
True or False?
True
Molecular diffusion is the dominate mixing process in the heterosphere.
True or False?
True
Which of the following correctly describes the meaning of albedo?
A) The lower the albedo, the more light the surface reflects, and the less it absorbs.
B) The higher the albedo, the more light the surface reflects, and the less it absorbs.
C) The higher the albedo, the more light the surface absorbs.
D) The higher the albedo, the more light the surface emits.
E) The higher the albedo, the more light the atmosphere absorbs.
B) The higher the albedo, the more light the surface reflects, and the less it absorbs.
Why does Venus have such a great difference in temperature between its “no atmosphere” temperature and its actual temperature?
A) It has a slow rotation.
B) It is so close to the Sun.
C) It has a large amount of greenhouse gases in its atmosphere.
D) It has a high level of volcanic activity.
E) It has no cooling effects from oceans.
C) It has a large amount of greenhouse gases in its atmosphere.
Earth’s stratosphere is heated primarily by which process?
A) Convection from the Earth’s surface.
B) Absorption of infrared radiation by greenhouse gases.
C) Absorption of visible light by ozone.
D) Absorption of ultraviolet radiation by ozone.
E) Atoms and molecules absorb infrared sunlight.
D) Absorption of ultraviolet radiation by ozone.
Suppose Earth’s atmosphere had no greenhouse gases. Then Earth’s average
surface temperature would be approximately:
A) 250 K, which is well below freezing.
B) 273 K, or about the freezing point for water.
C) 283 K, or about 5 K cooler than it is now.
D) 288 K, or about the same as it is now.
E) 293 K, or about 5 K warmer than it is now.
A) 250 K, which is well below freezing.
Which of the following planets has an exosphere?
A) Mercury.
B) Venus.
C) Earth.
D) Mars.
E) all of the above.
E) all of the above.
What is the exosphere?
A) The lowest layer in the atmosphere.
B) The part of the atmosphere that absorbs optical light.
C) The part of the atmosphere that absorbs ultraviolet.
D) The part of the atmosphere that absorbs X rays.
E) The highest layer in the atmosphere.
E) The highest layer in the atmosphere.
Convection occurs in the troposphere but not in the stratosphere because:
A) The troposphere is warmer than the stratosphere.
B) The troposphere is cooler than the stratosphere.
C) Lower altitudes of the troposphere are warmer than higher altitudes, unlike in the stratosphere.
D) Higher altitudes of the troposphere are warmer than lower altitudes, unlike in the stratosphere.
E) The troposphere contains fewer greenhouse gases than the stratosphere.
C) Lower altitudes of the troposphere are warmer than higher altitudes, unlike in the
stratosphere.
The atmosphere on Mercury is due to:
A) Volcanic outgassing.
B) Evaporation.
C) Sublimation.
D) Bombardment.
E) There is no detectable atmosphere on Mercury.
D) Bombardment.
The sky is blue because:
A) Molecules scatter blue light more effectively than red light.
B) Molecules scatter red light more effectively than blue light.
C) The Sun mainly emits blue light.
D) The atmosphere transmits mostly blue light.
E) The atmosphere absorbs mostly blue light.
A) Molecules scatter blue light more effectively than red light.
