Florida Science Grade 6

Section 3: Earth and the Solar System

Earth and the Solar System

1.
How many planets are in our solar system?
A)three
B)nine
C)ten
D)hundreds
2.
What unit is used to measure distance within our solar system?
A)astronomical unit
B)light-year
C)kilometer
D)miles
3.
How are the inner planets characterized?
A)gaseous and large
B)small and soupy
C)solid and rocky
D)large and wet
4.
Which is the closest planet to the Sun?
A)Earth
B)Mercury
C)Mars
D)Pluto
5.
What protects Earth from ultraviolet radiation?
A)the carbon dioxide layer
B)space between Earth and the Sun
C)the asteroid belt
D)the ozone layer
6.
What separates the inner planets from the outer planets?
A)the Oort cloud
B)the ozone layer
C)planetary rings
D)the asteroid belt
7.
Which is the largest planet in the solar system?
A)Jupiter
B)Saturn
C)Pluto
D)Earth
8.
What causes the rings around some planets?
A)asteroids
B)comets
C)chunks of ice and rock
D)gas giants
9.
Which planets alternate as the farthest from the Sun?
A)Earth and Venus
B)Neptune and Pluto
C)Jupiter and Saturn
D)Uranus and Neptune
10.
How far away is the Oort cloud, where comets possibly originate?
A)1 AU
B)100,000 AUs
C)1 light-year
D)100,000 light-years
11.
How large are meteorites?
A)They can be as small as a pebble as large as several tons
B)smaller than pebbles
C)several miles in diameter
D)1 AU wide
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