8th Grade Space Review

The ___________________ is made up of all known matter and energy. 

• Universe
• Galaxy
• Solar System
• Sun

The leading theory scientists use to describe the origins of the universe says that that it expanded out from a single, infinitely small point. It is known as the? 

• Big Bang
• Accordion Theory
• Soap Bubble Model
• Beginning

True or false, there are a only a few million galaxies in the universe. 

• True
• False

The objects that orbit around our Sun are known as the? 

• Solar System
• Planetary System
• Galaxy System
• Circular System 

__________________ is special because it is the only known planet to support life. 

• Earth
• Mars
• Jupiter
• Uranus

A ________________ is a spherical body that orbits a star. 

• Planet
• Comet
• Meteor
• Meteoroid

Mercury, Venus, Earth and Mars make up the ______________ planets. 

• Inner
• Outer
• Frosty
• Gaseous

Jupiter, Saturn, Uranus and Neptune make up the ___________________ planets. 

• Inner 
• Outer
• Smallest
• Rocky

True or false, the inner planets are made up of rock because the Sun's gravity pulling in more massive objects. 

• True
• False

True or false, the outer planets are made up of rock because the Sun's gravity pulling in more massive objects. 

• True
• False