Question 1

What is the explanation of the large density of Mercury?

Accepted Answer

A) There is a black hole at the center of Mercury 
B) The interior is greatly compressed by Mercury's large gravity 
C) Mercury has been compressed by numerous giant impacts 
D) Mercury has a large iron-nickel core 
A) There is a black hole at the center of Mercury 
B) The interior is greatly compressed by Mercury's large gravity 
C) Mercury has been compressed by numerous giant impacts 
D) Mercury has a large iron-nickel core

Question 2

Why is the surface of Venus so hot?

Accepted Answer

A) Infrared radiation emitted by the surface can't escape into space 
B) Venus absorbs nearly all of the solar radiation that strikes it 
C) Frequent volcanic eruptions heat the lower atmosphere 
D) The surface is heated by radioactivity in surface rocks 
A) Infrared radiation emitted by the surface can't escape into space 
B) Venus absorbs nearly all of the solar radiation that strikes it 
C) Frequent volcanic eruptions heat the lower atmosphere 
D) The surface is heated by radioactivity in surface rocks

Question 3

What are the clouds of Venus made of?

Accepted Answer

A) Sulfuric acid droplets 
B) Dry ice crystals 
C) Water droplets 
D) Ice crystals 
A) Sulfuric acid droplets 
B) Dry ice crystals 
C) Water droplets 
D) Ice crystals

Question 4

What can be said regarding Mercury's surface temperature?

Accepted Answer

A) It is the hottest surface in the solar system. 
B) The surface has the largest temperature differences in the solar system 
C) The temperatures remain fairly constant between day and night. 
D) Mercury's atmosphere holds in large quantities of heat,producing a high surface temperature. 
A) It is the hottest surface in the solar system. 
B) The surface has the largest temperature differences in the solar system 
C) The temperatures remain fairly constant between day and night. 
D) Mercury's atmosphere holds in large quantities of heat,producing a high surface temperature.

Question 5

The atmosphere of Venus is primarily made up of

Accepted Answer

A) Carbon dioxide. 
B) Water vapor 
C) Nitrogen. 
D) Helium 
A) Carbon dioxide. 
B) Water vapor 
C) Nitrogen. 
D) Helium

Question 6

What evidence is there that the surface of Venus was covered by giant flows of lava a few hundred million years ago?

Accepted Answer

A) The surface is still hot 
B) There are relatively few impact craters on Venus 
C) Radioactive dating shows that the surface is a few hundred million years old 
D) The cracks where lava reached the surface can be seen in radio maps 
A) The surface is still hot 
B) There are relatively few impact craters on Venus 
C) Radioactive dating shows that the surface is a few hundred million years old 
D) The cracks where lava reached the surface can be seen in radio maps

Question 7

The total amount of water in the atmosphere of Venus would cover the surface of the planet to what depth?

Accepted Answer

A) 1 mm 
B) 3 cm 
C) 10 m 
D) 15 km 
A) 1 mm 
B) 3 cm 
C) 10 m 
D) 15 km

Question 8

Why are the craters on Mercury generally larger than lunar craters?

Accepted Answer

A) There is more surface gravity on Mercury,compared to the Moon. 
B) Meteroids are larger near Mercury's orbit. 
C) Mercury had more volcanic activity than the Moon,producing more volcanic craters. 
D) The larger lunar craters have been eroded away. 
A) There is more surface gravity on Mercury,compared to the Moon. 
B) Meteroids are larger near Mercury's orbit. 
C) Mercury had more volcanic activity than the Moon,producing more volcanic craters. 
D) The larger lunar craters have been eroded away.

Question 9

Which of the following is the best description of most of the surface of Venus?

Accepted Answer

A) Steep-sided trenches 
B) Rugged mountains 
C) Jungles 
D) Rolling plains 
A) Steep-sided trenches 
B) Rugged mountains 
C) Jungles 
D) Rolling plains

Question 10

Which of the following places has a crater density that is similar to that of Mercury?

Accepted Answer

A) Lunar maria 
B) Lunar terrae 
C) Venus 
D) Earth 
A) Lunar maria 
B) Lunar terrae 
C) Venus 
D) Earth

Question 11

Which of the following atmospheric gases accounts for the high surface temperature of Venus?

Accepted Answer

A) Oxygen 
B) Argon 
C) Carbon dioxide 
D) Hydrogen 
A) Oxygen 
B) Argon 
C) Carbon dioxide 
D) Hydrogen

Question 12

Why are there more craters on Mercury,than on Venus,Earth,and Mars?

Accepted Answer

A) Large scale crustal motions enhance the cratering effect on Mercury. 
B) Less large scale crustal motions preserve the existing craters on Mercury. 
C) More collisions with Meteors have occurred on Mercury's surface,compared with Venus,Earth,and Mars. 
D) Larger volcanic eruptions have occurred on Mercury's surface,compared with Venus,Earth,and Mars. 
A) Large scale crustal motions enhance the cratering effect on Mercury. 
B) Less large scale crustal motions preserve the existing craters on Mercury. 
C) More collisions with Meteors have occurred on Mercury's surface,compared with Venus,Earth,and Mars. 
D) Larger volcanic eruptions have occurred on Mercury's surface,compared with Venus,Earth,and Mars.

Question 13

Which of the following best describes the rotation of Venus?

Accepted Answer

A) Rapid and forward (prograde) 
B) Rapid and backward (retrograde) 
C) Slow and forward (prograde) 
D) Slow and backward (retrograde) 
A) Rapid and forward (prograde) 
B) Rapid and backward (retrograde) 
C) Slow and forward (prograde) 
D) Slow and backward (retrograde)

Question 14

The scarps that cut across the surface of Mercury probably were

Accepted Answer

A) Cut by flowing lava 
B) Produced by impacts 
C) Formed when the crust buckled as Mercury cooled 
D) Formed when crustal plates ran together during plate tectonics 
A) Cut by flowing lava 
B) Produced by impacts 
C) Formed when the crust buckled as Mercury cooled 
D) Formed when crustal plates ran together during plate tectonics

Question 15

Which planet is most like Venus in size and mass?

Accepted Answer

A) Earth 
B) Mars 
C) Mercury 
D) Neptune 
A) Earth 
B) Mars 
C) Mercury 
D) Neptune

Question 16

How do we know that Mercury contains a higher percentage of iron than does the Earth?

Accepted Answer

A) The reddish color of its surface rocks indicates iron oxides 
B) Its surface is very smooth and shiny 
C) There are traces of gaseous iron in its atmosphere 
D) Although it is smaller than Earth,its density is about the same 
A) The reddish color of its surface rocks indicates iron oxides 
B) Its surface is very smooth and shiny 
C) There are traces of gaseous iron in its atmosphere 
D) Although it is smaller than Earth,its density is about the same

Exam 10: Mercury and Venus

What is the explanation of the large density of Mercury?

Why is the surface of Venus so hot?

What are the clouds of Venus made of?

What can be said regarding Mercury's surface temperature?

The atmosphere of Venus is primarily made up of

What evidence is there that the surface of Venus was covered by giant flows of lava a few hundred million years ago?

The total amount of water in the atmosphere of Venus would cover the surface of the planet to what depth?

Why are the craters on Mercury generally larger than lunar craters?

Which of the following is the best description of most of the surface of Venus?

Which of the following places has a crater density that is similar to that of Mercury?

Which of the following atmospheric gases accounts for the high surface temperature of Venus?

Why are there more craters on Mercury,than on Venus,Earth,and Mars?

Which of the following best describes the rotation of Venus?

The scarps that cut across the surface of Mercury probably were

Which planet is most like Venus in size and mass?

How do we know that Mercury contains a higher percentage of iron than does the Earth?

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