Earth Space Science Review

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

• gas
• metal
• water
• rock

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

• axis
• rotation
• revolution
• satellite

Which is the largest object in our solar system?

• Sun
• Jupiter
• Earth
• Pluto

Where is the asteroid belt found?

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

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 

What is the definition of CONDUCTION?

• When heat is transferred from objects like rays of light or electromagnetically.
• a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
• When heat transfers from objects that are touching.
• When heat transfers through the heater or AC in your house.

What is the definition of CONVECTION

• When heat transfers through the heater or AC in your house.
• When heat transfers from objects that are touching.
• a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
• Holding hands

How does changing the distance between objects affect the force of gravity?

• Decreasing distance increases gravity
• increasing distance increases gravity 
• Distance does not affect gravity

The planet with the shortest year is

• Earth
• Neptune
• Pluto
• Mercury

A collection of stars, dust, and gas bound together by gravity is...

• Universe
• Solar System
• Planet
• Galaxy