Eccentricity Calculations

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

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

Calculate the eccentricity for the following orbit. 

• 1.6
• 0.8
• 0.6
• 1.2

Tags

NGSS.HS-ESS1-4

If an orbit has an eccentricity value of "0", what shape is it? 

• perfectly circular
• perfectly flat
• very oval/elliptical
• slightly oval/elliptical

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

When a planet orbits the Sun, one of the foci of the elliptical orbit is 

• the axis
• the perihelion
• the center
• the Sun

An ellipse is

• a circle

• an oblate sphere

• an oval

An eccentricity that is closer to 1 means which 2 things:

• the orbit is more eccentric

• the orbit is very round

• the orbit is more like an oval

• there is no orbit