The natural pull of objects toward each other is called ___

• the solar system
• gravity
• a satellite
• an orbit

Earth travels around the Sun, completing the whole trip every ___

• 24 hours
• 7 days
• 27 days
• 365 days

Why do we orbit the Sun and not the other way around?

• brighter objects tend to orbit duller ones
• duller objects tend to orbit brighter ones
• lighter objects tend to orbit heavier ones
• heavier objects tend to orbit lighter ones

The Sun is the heaviest object in our solar system. It's about ___

• twice as heavy as Jupiter
• 200 times heavier than Jupiter
• 500 times heavier than Jupiter
• 1000 times heavier than Jupiter

The Earth doesn't totally get sucked into the Sun, because ___

• it's moving too slowly around it
• it's moving fast enough around it
• it's too heavy too pull in
• it's too far away

A group of stars, gas and dust bound together by gravity is called ___

• an orbit
• the Sun
• a galaxy
• a black hole

What is the name of our galaxy?

• the Solar System
• Orbital Galaxy
• the Andromeda Galaxy
• the Milky Way

An object that has a gravitational pull stronger than anything else in space is called ___

• a black hole
• a galaxy
• dark matter
• an orbit

What object is at the center of our Milky Way galaxy?

• a giant star
• a black hole
• our solar system
• the Earth

The eight main planets tend to orbit the Sun in a relatively circular way in the same ___

• straight line
• identical orbit
• imaginary plane
• ideal curve