Solar System Review

Match the following definition to the correct word:
"the circular or elliptical path of an object as it revolves around another object"

• Revolution
• Axis
• Orbit
• Ellipse 

During what month is the earth moving the fastest around the sun? 

• July
• March
• January
• September

During which month is the earth moving the slowest? 

• July 
• March
• January
• September

What do we use scientific notation for? 

• to represent numbers that are very large
• to represent numbers that are very small
• we never use scientific notation
• to represent numbers that are very small, OR very large

If the exponent is a positive number (such as the example below) the number is... 
Example: 9.34x10⁶

• very large
• very small
• it makes no difference 

If the exponent is a negative number (like the example below) the number is... 
Example: 4.25x10^-8

• very large
• very small
• it makes no difference 

Which of the following numbers is bigger? 
a) 9.5x10⁴

b) 7.2x10⁹

• a
• b

How many days does it take the Earth to make one full rotation around the sun? 

• 180
• 365
• 370
• 400

Match the following definition to the correct word. 
"a force that exists between any two objects that have mass and that pulls the objects together."

• Atmosphere
• Axis
• Orbit
• Gravity

True or False?

"The greater the mass of an object, the greater its gravitational pull."

• True
• False