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Outer Planets

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

 1. 

____ has colorful clouds in bands of white, red, tan, and brown and a great red spot.
a.
Saturn
c.
Jupiter
b.
Uranus
d.
Neptune
 

 2. 

This object is sometimes referred to as a dirty snowball.  It develops a long tail as it approaches the Sun.
a.
meteor
c.
asteroid
b.
meteorite
d.
comet
 

 3. 

Two of the outer planets are ____.
a.
Venus and Saturn
c.
Earth and Pluto
b.
Mars and Venus
d.
Uranus and Jupiter
 

 4. 

Small pieces of rock that enter Earth's atmosphere at speeds of 15 to 70 km/s and burn up in the mesosphere.
a.
stars
c.
meteorites
b.
meteors
d.
asteroids
 

 5. 

____ are pieces of rock that strike the surface of a moon or planet.
a.
asteroids
c.
Meteor showers
b.
Comets
d.
Meteorites
 

 6. 

Which of these is not an outer planet?
a.
Mars
c.
Jupiter
b.
Saturn
d.
Uranus
 

 7. 

Pluto is different from the other outer planets because ____.
a.
it may have been a moon of an inner planet that escaped
b.
it formed near Earth and moved outward
c.
it is close to the inner planets
d.
it is now classified as a dwarf planet
 

 8. 

A comet develops a coma or tail because of ____.
a.
gravity
c.
the Oort Cloud
b.
Earth's atmosphere
d.
heat from the Sun
 

 9. 

Scientists hypothesize that the Sun formed ____.
a.
less than a billion years ago
c.
less than a million years ago
b.
about 5 billion years ago
d.
from a chunk of Jupiter
 

 10. 

What separates the inner planets from the inner planets?
a.
Mars
c.
about 3 lightyears
b.
the asteroid belt
d.
empty space
 

 11. 

____ is the largest planet in the solar system, is the fifth planet from the Sun, and has colorful clouds.
a.
Jupiter
c.
Uranus
b.
Saturn
d.
Neptune
 

 12. 

Solar energy trapped by gases in Venus's atmosphere causes ____.
a.
clouds to form
c.
the greenhouse effect and makes it the hottest
b.
its slow rotation
d.
a cooling effect
 

 13. 

How are the inner planets different from the outer planets?
a.
inner planets are larger and have more moons
c.
the inner planets all have moons and the outer planets do not
b.
the outer planets have no moons
d.
the inner planets have solid, rocky surfaces and the outer planets are made of gases
 

 14. 

Water is found as a solid, liquid, and gas on ____.
a.
Mercury
c.
Earth
b.
Venus
d.
Mars
 

 15. 

People once believed that all planets and stars orbited around ____.
a.
Mercury
c.
Earth
b.
Venus
d.
Mars
 

 16. 

Galileo used his telescope to discover evidence for the Sun-centered model of the solar system. This evidence included all of the following EXCEPT ____.
a.
Venus going through phases
b.
Venus revolving around the Sun, not Earth
c.
the discovery of Neptune and Pluto
d.
Jupiter has Moons
 

 17. 

Neptune is the ____ planet from the Sun.
a.
eighth
c.
second
b.
third
d.
first
 

 18. 

Jupiter is so large that
a.
it is actually a tiny star
c.
it is larger than the Sun
b.
all of the other planets will fit inside
d.
it is changing into a black hole
 

 19. 

The order of the inner planets outward from the Sun is ____.
a.
Mercury, Earth, Venus, and Mars
c.
Mars, Venus, Earth, and Mercury
b.
Mercury, Venus, Earth, and Mars
d.
Earth, Venus, Mars, and Mercury
 

 20. 

Which of these planets does not have any moons?
a.
Jupiter
c.
Neptune
b.
Saturn
d.
Venus
 



 
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