Planetary Motion

The path a planet travels around the sun is called its 

• orbit
• ellipse
• barycenter
• precession

Kepler's first law states that the orbits of the planets are oval in shape or 

• ellipses
• perfect circles

The place where a planet is farthest away from the Sun in its orbit around the Sun is called the

• aphelion
• perihelion

The place where a planet is closest to the Sun as it orbits the Sun is called the

• perihelion
• aphelion

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

• Mercury

• Venus

• Earth

• Mars

When a body in space travels around a larger body in space it is said to _____________ around the larger body.

• rotate

• revolve

• axis

When do planets move the fastest?

• Close to the sun
• Far away from the sun

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

An ellipse is drawn around two points called

• aphelion
• perihelion
• foci
• axis

Where is Earth in its orbit at #1 in this picture?

• perigee
• apogee
• perihelion
• aphelion