Solar System

Earth and the other planets closest to the Sun are made mostly of _______

• gas
• metal
• water
• rock

Earth's ________ on its axis causes day and night.

• rotation
• revolution
• phase
• comet

The moon is a natural  ______ of Earth.

• comet
• axis
• satellite
• space probe

One full orbit of an object around another object is called a ________.

• axis
• rotation
• revolution
• satellite

Where is the asteroid belt found?

• between earth and mars
• Between Uranus and Neptune
• Between Mercury and Venus
• Between Mars and Jupiter

Day and night is caused by the _____________ of earth on its axis.

• revolution
• orbit
• rotation

Why does Earth have different seasons? 

• because of the distance between Earth and the sun 
• because of the speed of Earth as it rotates on its axis 
• because of the amount of light blocked by the moon on its axis 
• because of the tilt of Earth on its axis as it moves around the sun 

As the Earth travels around the sun, this tilt causes different areas of the Earth’s surface to get different amounts of daylight at different times of the year. The angle of the Sun’s rays to the surface also causes areas to have more or less of the Sun’s energy. This causes the ________.

• months
• day and night
• seasons
• years

a pattern of stars that form an imaginary picture or design in the sky

• Orbit
• Rotate
• constellation
• Milky Way

A ball of ice and dust with a tail of gas and dust pointing away from the sun.

• Asteroid
• Comet
• Moon
• Meteor