Force
Simple Machines
Gravity
Magnetism
Friction
100
a push or a pull
What is force
100
used to hold objects together
What is a screw
100
a force that pulls objects toward the center of the earth
What is gravity
100
an object is magnetic because of this
What is it has iron in it
100
_________ makes objects slow down or stop
What is friction
200
when a force makes an object _________, work is done
What is move
200
a simple machine made of a bar or board and a fulcrum
What is a lever
200
why we are able to walk on the ground
What is gravity pulls us down
200
the __________ of magnetism can be pushing or pulling
What is force
200
friction occurs when this happens
What is objects are rubbed together
300
an object moves in the direction it is ____________ or __________
What is pushed, pulled
300
claws and teeth
What are body parts used by animals as simple machines
300
There is __________ gravity in space
What is no
300
the ends of the magnets
What are poles
300
Which has more friction: an object on ice or on water?
What is on ice
400
if more force is applied, an object will move ___________
What is faster
400
a simple machine made of a wheel and rope
What is a pulley
400
A penny falls at the same time a feather falls. Which will hit the ground first?
What is both at the same time.
400
When the north and south poles are put together, they ___________. When N and N are put together, they ____________.
What is attract; repel
400
_________ friction occurs between objects that are smooth.
What is less
500
the amount of work done depends on this
What is how much force is a applied and how far the object goes
500
all seven simple machines
What is wheel and axle, wedge, pulley, gear, lever, screw, inclined plane
500
the pull of gravity on an object
What is weight
500
where the strongest part of the magnet can be found
What are poles
500
the reason you smell burning rubber when a car continually uses a hand brake
What is because there is friction present between the car and the road, and friction causes heat
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