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Planets 1
Asteroids, Meteoroids, & Comets 1
General
Planets 2
Asteroids, Meteoroids, & Comets 2
100
The only planet known to sustain life is?
Earth
100
_____________ are small asteroids.
Meteoroids
100
Large bodies orbiting a star are called __________.
planets
100
___________ is the largest planet in the solar system.
Jupiter
100
The sudden occurrence of many meteors is called _________.
meteor shower
200
Which is the closest planet to the Sun?
Mercury
200
Rocky metallic objects that orbit the Sun are?
asteroids
200
_______ is the path a planet or asteroid takes as it travels around the Sun.
Orbit
200
The second largest planet is __________.
Saturn
200
A ____________ is a meteoroid that has entered the Earth's atmosphere.
meteor
300
__________ has seven major rings around it.
Saturn
300
Some meteoroids come from material ejected by comets and other are believed to come from _______________.
the asteroid belt
300
The order of the planets from closest to farthest from the Sun is:
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, & Neptune
300
_____________ appears blue due to methane in its atmosphere.
Neptune
300
How long does it take comets to orbit the Sun?
More or less than 200 years
400
The __________ are made up of a solid core surrounded by liquid and a gaseous atmosphere.
outer planets
400
Any part of a meteoroid that reaches the Earth’s surface is called a(n) ___________.
meteorite
400
Planets, moons, an other bodies traveling around the Sun are part of the ____________.
solar system
400
Which of the outer planets have rings?
Saturn, Uranus, & Neptune
400
A _________ is a ball of ice and rock that orbit the Sun.
comet
500
The planet with a rotation period almost the same as Earth is?
Mars
500
The orbit of Halley’s comet brings it past Earth every _____ years.
76
500
Earth's atmosphere is mostly composed of ____________.
nitrogen and oxygen
500
The greenhouse effect causes ________ to have very high temperatures.
Venus
500
Some comets originate from Pluto's orbit called ________.
Kuiper Belt