Maps and Pictorials
It's Out of This World!
It's Still Out of This World!
CCD Words
More CCD Words
100

These planets are closest to the sun.

What are inner planets?

100

This is where most of the asteroids in space are located. 

What is the asteroid belt?

100

None of the inner planets have these.

What are rings?

100

A planet made up of rock and heavy metals. 

What is terrestrial?

100

This force is the resistance of an object to change direction.

What is inertia?

200

This is the number of Earth days that makes up one year on Mars. 

What is 687?

200

These are made of dirty ice, dust, and gas.

What are comets?


200

This is the only asteroid that can be seen from Earth. 

What is Vesta?

200

A cloud made of dust and gas

What is a nebula?

200

This word means "light circle" or "circle of light"

What is photosphere?

300
Fill in the blank: the sun is a _________________.

What is a huge ball of burning gas. 

300

On this date, astronauts first walked on the moon.

What is July 20th, 1969?

300

This is where most of the comets in our solar system are located. 

What is the Oort Cloud?

300

A colorless, tasteless gas that makes up most of the sun and the outer planets. 

What is hydrogen?

300

This force attracts planets to the sun

What is gravity?

400

The asteroid belt is located between these two planets. 

What are Mars and Jupiter?

400

These are three of the known dwarf planets in our galazy.

What are Pluto, Ceres, and Eris?

400

For 20 Earth years, this planet is the furthest away. 

What is Neptune?
400

This word means "space traveler"

What is an astronaut?

400

This is the ability to do work

What is energy?

500

This planet may have once supported life. 

What is Mars?

500

This planet has thin, dark rings. 

What is Uranus?

500

This is the only planet in the solar system that humans have walked on. 

What is Earth?

500

An imaginary line that an object spins on

What is an axis?

500

Dust or tiny particles that exist in the solar system.

What is star dust or cosmic dust?