Gravity, Inertia, Theories, and Models of the Universe

The law of universal gravitation is credited to whom? 

• Einstein 
• Galileo
• Darwin
• Newton 

Two factors effecting the magnitude of force of gravity between 2 objects are...

• weight and mass 
• distance and weight 
• mass and matter 
• mass and distance 

Gravity attracts all objects towards one another. 

• True
• False 

As distance between objects increases the pull of gravity...

• increases 
• decreases 
• Stays the same 

A person would weigh less on the moon than on the Earth because...

• the moon has less mass, and therefore less gravity
• the moon has more mass, and therefore less gravity
• the moon has less mass, and therefore more gravity
• the moon has more mass, and therefor more gravity

An example of a gravitational interaction is that the Earth... 

• orbits the sun
• orbits the moon
• orbits other planets 
• None of the above 

__________holds all of the planets in orbit around the sun.

• Force
• Motion
• Weight
• Gravity

Objects with MORE mass have...

• MORE inertia

• LESS inertia

• the SAME amount of intertia

Complete the excerpt of Newton's First Law of Motion

"An object in motion will ________ until it is acted on by an unbalanced force."

• ...stay in motion...

• ...stop its motion...

• ...increase its motion...

• ...decrease its motion...

Complete the excerpt of Newton's First Law of Motion

"...and an object at rest will ________ until acted on by an unbalanced force."

• ...stay at rest...

• ...start an increasing motion...

• ...start a decreasing motion...