Orbits Quiz

A perfect circle has an eccentricity of ______.

• 0
• .99
• 1
• 2

Which planet has an orbital eccentricity most like the orbital eccentricity of the Moon?

• Earth
• Saturn
• Mars
• Mercury

The gravitational attraction between the star and the planet will be greatest at position 

• A
• B
• C
• D

Which planet takes more time to complete one rotation on its axis than to complete one revolution around the Sun?

• Mercury
• Venus
• Mars
• Jupiter

Which diagram shows a planet with the least eccentric orbit?

• 1
• 2
• 3
• 4

What is the maximum eccentricity an ellipse can be?

• 0
• .5
• 1
• 42

What is eccentricity? 

• a measurement of how elliptical an orbit is. 
• a measurement of the distance between the planet and the sun
• a measurement of how long the planet takes to rotate around the sun
• none of these

An ellipse is drawn around two points called

• aphelion
• perihelion
• foci
• axis

What is the eccentricity of the Earth's orbit around the Sun?

• .0167

• .167

• 1.67

• .72

What is true about the area between points A, B and the Sun, and the area between points H, I and the Sun?

• The area between A, B and the Sun is the largest.
• The area between H, I and the Sun is the largest
• Both areas are equal in size
• There is not enough information to determine the areas