Force, Motion, And Simple Machines: Question Preview (ID: 26650)

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Why can astronauts float in space?
a) there is gravity in space
b) there is no gravity in space
c) they weight less
d) they have special machines

What simple machine has a pivot point that allows it to move?
a) inclined plane
b) pulley
c) lever
d) wheel and axle

This simple machine has a bar and fulcrum?
a) wheel and axle
b) inclined plane
c) lever
d) gravity

This simple machine has a slope?
a) catapult
b) inclined plane
c) wheel and axel
d) screw

What does friction do?
a) It keeps a force from happening
b) helps things move faster
c) It stops gravity
d) It allows things to float

Without gravity we would?
a) nothing would change
b) float away
c) fall over
d) be able to jump higher

What happens to a ball if you toss it.
a) It keeps moving
b) It floats away
c) It doesn't move
d) It falls to the ground

What is gravity?
a) The pull of objects to the earth
b) To float in space
c) To be able to move an object
d) To keep something from moving smoothly

What is force?
a) To push something
b) To fall towards the Earth
c) The power to move an object or change its direction
d) A sloping ramp

What caused the acorn to fall down and hit chicken little in the head?
a) gravity
b) force
c) friction
d) work

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