What affects the strength of gravity?

• mass, distance
• mass, weight
• shape, height
• mass, height

When is a planet orbiting the sun the SLOWEST?

• closest to the sun
• furthest from sun

When is a planet orbiting the sun the FASTEST?

• closest to the sun
• furthest from sun

Which factor does NOT affect speed of fall?

• air resistance
• mass

Which statement is TRUE about distance and gravity?

• The more distance, the more gravity.
• The less distance between objects, the least strength of gravity.
• The greater the distance between objects, the greater the strength of gravity.
• The greater the distance between objects, the less strength of gravity.

What fraction of Earth's is the moon's gravitational pull?

• 1/2
• 1/6
• 1/3
• 1/5

Where does Earth's gravity pull towards?

• south pole
• north pole
• center of earth
• equator

What is the force that attracts objects together?

• gravity
• velocity
• massivity
• galaxy

What type of galaxy is ours?

• ovular
• spherical
• spiral
• elliptical

Approximately how many STARS are in the Milky Way galaxy?

• 600-1000 million
• 600-1000 billion
• 100-400 milllion
• 100-400 billion