Kepler's Laws of Planetary Motion Quiz

Planets orbit the Sun in a shape called a(n)

• circle

• ellipse

• focus

• perihelion

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

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

What has an eccentricity of zero

• a straight line
• a large ellipse
• a circle
• a small ellipse

Where is the planet moving faster

• Position A to B
• Position B to C
• Position H to I
• Position I to J

A planet moves __________ when it is farthest from the sun.

• faster
• slower

The diagram below shows a moon revolving around a planet in an elliptical orbit. At which position is the moon traveling fastest?

• location 1

• location 2

• location 3

• location 4

The diagram below shows a moon revolving around a planet in an elliptical orbit. At which position is the moon traveling slowest?

• location 1

• location 2

• location 3

• location 4

Which planet will take the least amount of time to revolve around the Sun?

• Mercury

• Venus

• Earth

• Mars

Which planet will take the most amount of time to revolve around the Sun?

• Mercury

• Venus

• Earth

• Mars

An ellipse is drawn around two points called _?_.

• dots

• points

• foci

• axis