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17.3 Test Review
Test Description: CPO Middle School Earth Science dwarf planets asteroids comets meteors meteorites
Instructions: Answer all questions to get your test result.
1) A “shooting star” is seen when this object enters Earth’s atmosphere and is vaporized.
A
a comet
B
a planetary satellite
C
an astroid
D
a meteor
2) Parts of a comet include all of the following EXCEPT:
A
nucleus
B
coma
C
halo
D
tail
3) The largest asteroid is named:
A
Pluto
B
Ceres
C
Eris
D
Phobos
4) A small chunk of ice and dust that revolves around the sun in a highly elliptical orbit is called a
A
meteor
B
planet
C
astroid
D
comet
5) If a meteor passes through Earth’s atmosphere without burning up it is called a
A
meteorite
B
comet
C
astroid
D
meteor
6) A rocky object orbiting the Sun, too small to be called a planet or dwarf planet, would be called an ____________________.
A
astroid
B
dwarf planet
C
comet
D
meteor
7) What is the difference between a meteor and a meteorite?
A
Meteorites have gold in them
B
Meteorites are smaller than meteors
C
Meteors fall to Earth.
D
Meteors reaching Earth's surface are called meteorites
8) Explain why scientists must carefully set the right speed of a satellite orbiting Earth.
A
So we get cell phone reception 247
B
So it doesn't head into outer space
C
So it doesn't crash into the moon.
D
Its forward motion (inertia) and the pull of gravity must be balanced to keep it in orbit
9) Large objects (such as Mars and Jupiter) that orbit a star belong to a group of objects known as ____________________.
A
gas giants
B
planets
C
solar system
D
terestrial planets
10) It would be difficult to live on the moon because it is missing:
A
air
B
water
C
all of the above
D
normal temperatures
*select an answer for all questions
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