Basics of Physics: Exploring Gravity

The greater the mass of an object, the greater the force due to gravity.

• True

• False

An object will weigh more on

• Mars
• Earth
• Jupiter
• the moon

The mass of an object on Earth is________the mass of the same object on the moon.

• less than
• the same as
• greater than

Under zero gravity conditions, such as in an orbiting satellite, a person seems

• heavier than on earth
• weightless
• the same as on earth

What keeps the planets orbiting around the sun?

• an equal balance of gravity and inertia
• heat from the sun
• the weightless environment
• wind from the sun

If an object is 100 kg of mass in the earth, it still has 100 kg on the moon.

• True
• False

An object's weight depends on

• the mass of the objects
• the weight of the object near you
• the distance between the objects
• the speed of the objects

If I weigh 120 pounds on earth, I will still weigh 120 pounds on the moon.

• True
• False

Gravity is best described as the attractive force 

• that does not exist in space
• that acts between any two objects
• that acts between magnets and iron
• that does not affect orbiting satellites

If a feather and a hammer fall to the ground from the same height in a vacuum,

• the feather would land first
• the hammer would land first
• they would land at the same time
• they would both float