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Asteroids, Meteoroids, Comets And Planets
Test Description: Review the differences between asteroids, meteoroids, comets and planets!
Instructions: Answer all questions to get your test result.
1) Which of the objects below orbit the sun?
A
comets
B
All of these objects orbit the sun
C
asteroids
D
planets
2) Most of the asteroids in the solar system can be found...
A
In between Mars and Jupiter
B
Out beyond Pluto
C
Super close to the sun
D
Orbiting around Saturn as its rings
3) What are the differences between asteroids and planets?
A
Planets are larger and shaped like spheres, while asteroids are smaller and not spherical
B
Planets rotate at a speed much faster than asteroids
C
Asteroids are able to hit Earth, and planets are not
D
Planets orbit around the sun and asteroids do not
4) What is actually a "shooting star"?
A
Meteoroids burning up in Earth's atmosphere
B
Stars revolving around the sun
C
Comets streaking by Earth
D
Asteroids passing close to Earth
5) __________are small pieces of "space junk," _________ are space junk that burns up in Earth's atmosphere, and _________ are space junk that actually reaches Earth's surface
A
meteoroids; meteors; meteorites
B
meteors; meteorites; meteoroids
C
meteorites; meteors; asteroids
D
asteroids; comets; meteors
6) What is the main difference between meteoroids and asteroids?
A
Asteroids are generally bigger than meteoroids
B
Asteroids are pieces of comets, whereas meteoroids are pieces of space debris
C
Asteroids are only found in the "belt" between Mars and Jupiter
D
Meteoroids are generally bigger than asteroids
7) What feature of the moon's surface was most likely created by meteorites?
A
Its shape
B
Its maria
C
Its dust
D
Its craters
8) You're hiking in the Arctic Circle and find a piece of rock. After testing it, you discover that it's from Mars! What's the most likely explanation for how this rock got there?
A
An alien came and left it on Earth
B
Mars and Earth crashed into each other awhile ago, and Mars left some debris behind
C
The rock broke off from Mars awhile ago and came to Earth as a meteor
D
A meteoroid came to Earth on a comet
9) How do we know if a meteor has made contact with Earth's atmosphere?
A
It burns up and becomes a "shooting star"
B
A species like the dinosaurs die out
C
Humans on Earth die
D
We find space rock on the ground
10) What is NOT true about asteroids?
A
They have an atmosphere
B
Some have their own little "moons"
C
Some are bigger than Pluto
D
Some of them have their own names
*select an answer for all questions
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