Solar System

The gravitational force is strongest when charges are (select all that apply):

• close together

• far apart

• have more mass

• have less mass

What is Kepler's 2nd Law about?

• the shape of the orbits

• the speed or area an orbiting object travels

• the size of the orbit an object has

• the amount of time it will take for an object to orbit

When it is farther from the sun, a planet appears to move:

• faster
• slower

The Earth has an eccentricity of 0.0167 as it orbits around the Sun. Which diagram is the best representation of the orbit of the Earth around the Sun?

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Kepler's first law is about:

• the shape of the orbit

• the time it takes for a planet to orbit

• the distance or speed a planet orbits

• how fast a planet spins

From which options below would the planet appear to be moving the fastest?

• Position A to B

• Position B to C

• Position H to I

• Position I to J

In orbits with low eccentricity (select ALL that apply):

• have the foci close together

• have the foci far apart

• are very long and elliptical

• are nearly circular

In orbits with low eccentricity (select ALL that apply):

• have the foci close together

• have the foci far apart

• are very long and elliptical

• are nearly circular

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