Astronomy Study Guide

When earth spins on its axis

• revolution

• rotation

• orbit

What kind of instrument provides physical evidence that Earth is rotating on its axis?

• telescope

• compass

• pendulum

A group of stars that forms a pattern in the night sky

• galaxy

• constellation

• asteroids

The path an object takes around the sun is called

• orbit

• highway

• rotation

Earth rotates in which direction?

• clockwise

• It does not rotate

• counter clockwise

Our sun is

• a planet

• a medium-sized star

• a giant star

What causes the length of shadows to change over the course of a day?

• the location of the sun

• the moon

• the stars

A sundial uses pattern of what to tell time?

• stars

• clouds

• shadows

Earth rotates on its axis once every

• 30 min.

• 365 days

• 24 hours

Stars produce _____ and ____

• light and lazers

• heat and light

• atoms and molecules