Show:
Planets
Vocabulary
Objects
Inner and Outer Planets
Extra
100
Mercury, Venus, Earth, and Mars are also known as the 
Inner planets 
100
The spinning of the Earth on its axis approximately every 24 hours: 
Rotation 
100
________ are pieces of space rock that are too small to be planets or dwarf planets but still revolve around the sun
Asteroids 
100
Which planet takes the longest time to make one revolution around the sun?
Neptune
100
The sun and all bodies that revolve around it make up the 
Solar System 
200
The outer planets are...
Jupiter, Saturn, Uranus, and Neptune 
200
A ______ is a large group of stars, dust, and gases held together by gravity 
Galaxy 
200
This is located in an area of space between the orbits of Mars and Jupiter 
Asteroid belt 
200
What are the inner planets are primarily made up of _____
Rock
200
The _____ is the largest object in the solar system 
Sun 
300
Which planet is known as the "Red Planet" 
Mars 
300
An _____ is the imaginary line running through a planet from the North Pole to the South Pole
Axis 
300
______ is a large clump of ice, dust, and small rock particles that has a tail and orbits the sun
Comets 
300
Which planets are large and made mostly of gas? 
The outer planets (Jupiter, Saturn, Uranus, Neptune)
300
What causes day and night on Earth? 
Earth rotating (spin) on its axis 
400
The planets farthest from the Sun are called the 
Outer planets 
400
It takes Earth 365 days to make one complete ________ around the sun 
Revolution (orbit) 
400
This term is often known as a "shooting star" 
Meteor 
400
Which planets have rings?
Jupiter, Saturn, Uranus, Neptune 
400
What is the force that keeps the planets from flying out of the solar system?
Gravitational force 
500
Which planet has the largest system of rings?
Saturn 
500
Every object revolves around the sun in a path called an ______
Orbit 
500
Which is the correct order of names for a space rock as it falls from space to land on Earth's surface? 
Meteoroid, meteor, meteorite 
500

Pluto and some other bodies in our solar system are labeled as _________

Dwarf planets
500
The sun is a _____, a sphere of hot gases that gives off its own light and heat
Star