Ellipse practice

An ellipse is drawn around two points called

• aphelion
• perihelion
• foci
• axis

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 drawn around two points called

• aphelion
• perihelion
• foci
• axis

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 shape are the orbits of all planets in our solar system? 

• circular
• cylindrical 
• elliptical
• none of these

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

Which orbit is most eccentric? 

• 1
• 3
• 4
• 5

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

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

Calculate the eccentricity for the following orbit. 

• 1.6
• 0.8
• 0.6
• 1.2