Asteroids
Meteors
Comets
Moons
Planets
100
What are asteroids made of?
Hard, rocky space debris.
100
What are meteors commonly known as?
Shooting stars.
100
What is a comet made of?
Dust and ice.
100
What shape are moons?
Spherical.
100
What are the order of the planets?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
200
What shape are asteroids?
Irregular, not round.
200
Why do most meteors not reach the Earth?
Because they burn up in Earth's atmosphere.
200
About how big is a comet?
A few miles wide (4 kilometers)
200
Which 2 inner planets have moons?
Earth and Mars.
200
What is a common characteristic of the inner planets?
Rocky core, closer to the sun, smaller, hotter than the other planets.
300
How large are asteroids?
Range from a few meters to hundreds of kilometers across.
300
What size is a meteor?
Ranges from a size of a grain of sand to a boulder.
300
What happens when a comet gets close to the sun?
The ice melts and evaporates and creates a tail.
300
How long does it take the moon to orbit around the earth?
About one month.
300
What is a characteristic of the outer planets?
Made of mostly gas, much larger than the inner planets, colder, and further from the sun.
400
Where are most asteroids found in our solar system?
In the Asteroid Belt.
400
What is it called when a meteor hits the Earth?
Meteorite.
400
What causes a meteor shower?
The earth passing through the orbit of a comet.
400
Why does the moon appear to have many more craters than Earth?
Because the moon does not have an atmosphere to protect it.
400
Which planet is the largest in the solar system?
Jupiter
500
What two planets is the asteroid belt located between?
Mars and Jupiter
500
How many meteorites reach the surface of the Earth each year?
About 500.
500
What shape do comets orbit the Sun?
Elliptical.
500
What is the name of Saturn's largest moon?
Titan.
500
Why is Pluto no longer considered a planet?
Because it is a dwarf planet. It is smaller than the moon and has an odd orbit around the sun.
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