7 Science - Gravity, Mass and Weight - Revision

What keeps the planets in orbit around the sun?

• gravity

• friction

• density

• distance

A person would weigh more on Jupiter than on the Earth because . . .

• Jupiter has more mass, and therefore more gravity
• Jupiter has less mass, and therefore more gravity
• Jupiter has more mass, and therefore less gravity
• Jupiter has less mass and therefore less gravity

Which of the following will not change in different gravitational fields?

• weight
• force
• mass
• pounds

A brick and a pencil are dropped at the same time from the same height. Which one would hit the ground first? (air-resistance is not included)

• brick

• pencil

• both would hit at the same time

When will the gravity between two objects be the LEAST?

• when the masses of both objects is small and the objects are close together

• when the masses of both objects is small and the objects are far apart

• when the masses of both objects is large and the objects are close together

• when the masses of both objects is large and the objects are far apart

When you drop a hammer and a feather, why does the feather fall slower?

• air resistance causes the feather to slow down

• gravity pulls harder on the hammer than the feather

• gravity pulls harder on the feather than the hammer

• air resistance causes the hammer to fall slower

Any object with mass is surrounded by a gravitational field.

• True
• Sometimes
• False
• Never

Sir Isaac Newton was thinking under a tree when...

• He was attacked by a bear

• An apple fell on his head

• He was eaten by bats

What is gravity?

• A force
• Energy
• A push
• All of them

Without gravity we would________. 

• Float away
• Stay in the ground
• Nothing would happen.
• I don't know