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The Planets 2

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

There are several different types of galaxies. The Milky Way, which contains our solar system, is
a.
a spiral galaxy.
c.
a horse head galaxy.
b.
an elliptical galaxy.
d.
an irregular galaxy.
 

 2. 

We can be sure that the Milky Way galaxy we live in is a spiral galaxy rather than an elliptical galaxy because
a.
it has curved arms.
c.
its stars are all about the same age.
b.
it does not show any rotation.
d.
new stars are no longer forming.
 

 3. 

Which planet is characterized by polar ice caps, a pink sky, a rust-colored surface, large volcanoes, and surface channels?
a.
Uranus
c.
Mars
b.
Pluto
d.
Saturn
 

 4. 

Which planet is closer to the Sun than Earth is to the Sun?
a.
Jupiter
c.
Saturn
b.
Venus
d.
Mars
 

 5. 

Which planet has a great red spot and many moons?
a.
Neptune
c.
Mars
b.
Jupiter
d.
Mercury
 

 6. 

The time it takes the Moon to go from a new moon to a full moon and back to a new moon is about
a.
1 day.
c.
28 days.
b.
14 days.
d.
365 days.
 

 7. 

 
Use the table below to answer this question.
planetquiz2_files/i0080000.jpg


This table shows data for major characteristics of the nine planets in the solar system. (One revolution is the length of time required for a planet to make one complete trip around the Sun; one rotation is the length of time required for a planet to make one complete turn on its axis.)
     
Which of the following planets has the shortest day measured in Earth time?
a.
Pluto
c.
Jupiter
b.
Earth
d.
Mercury
 

 8. 

 
Use the chart below to answer this question.

planetquiz2_files/i0090000.jpg


The chart shows the average distance of each planet from the Sun and the speed each planet travels in its orbit. Which conclusion should be drawn from this chart?
a.
The planets closer to the Sun travel around the Sun faster.
b.
The planets closer to the Sun absorb the Sun's energy and therefore move faster.
c.
The outer planets move slower because they are larger.
d.
The outer planets move slower because they have many moons.
 

 9. 

Astronomers determine the chemical composition of stars by using a
a.
telescope.
c.
kaleidoscope.
b.
spectroscope.
d.
stethoscope.
 

 10. 

What are the two dominant elements in Earth's atmosphere?
a.
oxygen and carbon dioxide
c.
nitrogen and oxygen
b.
hydrogen and helium
d.
silicon and hydrogen
 

 11. 

Which picture demonstrates rotation?
a.
planetquiz2_files/i0120000.jpg
c.
planetquiz2_files/i0120001.jpg
b.
planetquiz2_files/i0120002.jpg
d.
planetquiz2_files/i0120003.jpg
 

 12. 

Venus is completely enveloped in clouds that hide its surface from view on Earth. Which statement is also true about these clouds?
a.
They keep the surface cool.
c.
They are mostly made of water.
b.
They produce sulfuric acid rain.
d.
They are caused by volcanoes.
 

 13. 

According to the big bang theory, the universe originated as a
a.
point where all matter and energy was concentrated.
b.
complex system of galaxies that has since been expanding.
c.
complete, limitless void without any matter or energy.
d.
massive sphere of matter and energy with near-infinite diameter.
 

 14. 

The phenomenon that causes the winds to be deflected to the left or right due to Earth's rotation is called
a.
Steno's laws.
c.
the nebular hypothesis.
b.
the Coriolis effect.
d.
differentiation.
 

 15. 

The asteroid belt is located between
a.
the Sun and Earth.
c.
Neptune and Pluto.
b.
Mars and Jupiter.
d.
Saturn and Uranus.
 

 16. 

The only reusable spacecraft designed to transport astronauts to and from space is a
a.
space probe.
c.
rocket.
b.
satellite.
d.
space shuttle.
 

 17. 

 
Use the table below, which lists characteristics of the largest planets in our solar system, to answer this question.

planetquiz2_files/i0180000.jpg


All of these planets have
a.
rotations slower than Earth's.
c.
bands of clouds.
b.
a gas and liquid composition.
d.
storms on their surfaces.
 

 18. 

If you were to watch the stars all night, they would seem to
a.
stay in exactly the same place in the sky.
b.
move across the sky at night, as the Sun does during the day.
c.
go in circles around the point straight up from where you are.
d.
move across the sky at night, in the opposite direction that the Sun moves during the day.
 

 19. 

Which is the largest object in the solar system?
a.
Earth
c.
the Sun
b.
Jupiter
d.
the Moon
 

 20. 

Which statement about asteroids is true?
a.
Asteroids have tails like comets.
b.
Asteroids are made mostly of ice.
c.
Most asteroids have orbits very similar to comets.
d.
Most asteroids exist between the orbits of Mars and Jupiter.
 

 21. 

The atmosphere of Venus consists of thick yellow clouds formed mostly from
a.
helium.
c.
hydrogen.
b.
sulfur.
d.
carbon.
 

 22. 

Earth stays in orbit around the Sun because of inertia and
a.
friction.
c.
magnetism.
b.
gravity.
d.
momentum.
 

 23. 

An object in the solar system has many wide, flat craters. What must be true about the object?
a.
It is an asteroid.
b.
It was originally formed with craters.
c.
It has been hit by other objects from space.
d.
It is a planet.
 

 24. 

Which planet is characterized by thick cloud cover, greenhouse effect, vast plains, and high mountains?
a.
Uranus
c.
Mercury
b.
Saturn
d.
Venus
 

 25. 

NASA scientists recently discovered evidence of liquid water on
a.
Venus.
c.
Jupiter.
b.
Mars.
d.
The Moon.
 



 
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