True or False
Fill in the Blank
Multiple Choice
Vocabulary
Mystery
100
Most asteroids orbit the region between Mars and Earth.
False.
100
Earth and the other planets rotate around the ______
Sun.
100
A meteor shower occurs when Earth passes through the orbit of a ______.

A) Meteoroid

B) Meteor

C) Comet

D) Meteorite

C) Comet
100
Dwarf Planet
A large, round object that revolves around the sun but has not cleared the region around its orbit. 
100
The spinning of _______ makes the stars appear to move across the sky.

A) Earth

B) Stars

C) Sun

D) Moons

A) Earth
200
Venus rotates on its side.
False.
200
Earth is wrapped in a layer of ______ that makes life possible on Earth.
gas
200

A solar flare is an ______ of waves and particles into space. 

A) Volcano

B) Mountain 

C) Rain

D) Eruption

D) Eruption
200
A natural object that revolves around a planet.
Moon
200
Neptune has _______ moons.

A) 6

B) 12

C) 19

D) 13

D) 13
300
A prominence looks like a ribbon of glowing gases.
True. 
300
Each of the outer planets has ______ of particles and many ______ orbiting it. 
rings, moons
300

A spacecraft that gathers information without a crew is called a __________.

A) Space Probe

B) Satellite

C) Planet

D) Star

A) Space Probe
300
Constellation
A group of stars that form a pattern. 
300
The outer most layer of the sun is called the ______.
Corona
400
The outermost layer of the sun is the chromosphere.
False. 
400
Most asteroids orbit the region between Mars and ______ called the asteroid belt.
Jupiter
400
The reddish-brown material on Mars is called ______.

A) Iron Oxide

B) Helium

C) Hydrogen

D) Craters

A) Iron Oxide
400
An explosive eruption of waves and particles into space.
Solar Flare
400
Earth is the only planet that has _____ water on its surface. 
3/4
500
A planet is a small, round object that orbits another planet.
False. 
500
Like planets, moons often have a ______ shape.
spherical
500
The innermost layer of the sun is called _______.

A) Chromosphere

B) Photosphere

C) Corona

D) Core

B) Photosphere
500
Asteroid
A rocky mass up to several hundred kilometers wide that revolves around the sun. 
500
List the planets in order from the sun.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
M
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u