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

• circle
• ellipse
• focus
• perihelion

An ellipse is drawn around two points called

• aphelion
• perihelion
• foci
• axis

What has an eccentricity of zero

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

Kepler's 2nd Law deals with

• the shape of the planets' orbits

• the area the planet travels

• the length of time/period it takes the planet to orbit the sun

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

• faster
• slower

The farther away a planet is from the sun, the _______ it takes it to orbit the sun once. 

• longer
• shorter

What does Kepler's 1st Law state?

• all planets move in elliptical shaped orbits around the sun

• all ellipses have one foci

• the area that a planet revolves around the sun is equal

• the speed that a planet revolves around the sun changes

A perfect circle has an eccentricity of ______.

• 0
• .99
• 1
• 2

Kepler's 2nd Law deals with 

• the shape of the planets' orbits
• the speed/area the planet travels 
• the length of time it takes the planet to orbit the sun

What is the term for the point in a planet's orbit closest to the sun?

• aphelion

• perihelion

• foci

• axis