Fourth Grade Astronomy

To spin around an axis

• Rotate
• Revolve
• Orbit
• Spin

What is an imaginary line that runs through the center of Earth from the North Pole to the South?

• Line
• Axis
• Equator
• Phase

The closed path of one object in space around another object.

• Circle
• Axis
• Revolve
• Orbit

To travel in a closed path.

• Revolve
• Orbit
• Spin
• Rotate

True or False: Earth rotates around the sun. 

• True
• False

During the first half of the moon's cycle, the amount of the lit side of the moon seen from Earth increase, or ________. 

• Wanes
• Waxes

True or False: One half of the moon is always being lit by the sun. 

• True
• False

What is a ball of rock, ice, and frozen gases that revolves around the sun?

• Asteroid
• Meteorite
• Comet
• Star

Which of the following is NOT an inner planet?

• Uranus
• Mercury
• Venus
• Earth

Which of the following is NOT an outer planet?

• Jupiter
• Neptune
• Saturn
• Mars