# Science vocabulary

## Terms

undefined, object
copy deck
acceleration
this means that something is slowing down
1,3
you are playing marbles. You shoot one into another. The one you hit stops but the one it hits moves out of the circle.
unbalanced forces
when you step into quickstand there are_______________
2
you are helping your teacher build a rock garden during recess. You are pushing a wheelbarrow full of rocks and then dump them. Pushing the wheelbarrow back to school is much easier.
1
you are playing a game of pool. you shoot
newton
a unit of measure used to measure weight
average speed
refers to the distance and time of an entire trip
1
why we should where seatbelts
inertia
resistance to a change in movement
weight
the measure of how much Earth's gravity pulls down on an object
3
you are in the school swimming pool gripping the edge. You push off the wall with your feet and shoot froward into the water.
law #3
for every action there is an equal and opposite reaction
2
A=F/M
reaction
a force that is opposite to an action
unbalanced force
when there is no movement (When you step in quicksand)
friction
the force that oppeses motion
force
any push or pull on an object
friction
this force slows down all moving objects
scientific law
a theory that was tested many times and the results were always the same
mass
the amount of material in an object
balanced forces
when there is no movement there are _________________
kilograms
a unit of measure used to measure mass
law #2
acceleration of an object increases as the amount of force causing acceleration increases. The larger the mass of the item, the larger the force needed to result in acceleration.
friction
the brakes on a bicycle work by using ______________________
gravity
a force that every object in the universe exerts on every other object (a force that pulls a skateboarder down a slope)
scale
a device use to measure weight
acceleration
a change in speed or direction
1
you are standing on the merry- go- round waiting for someone to push it. When ot does get pushed, you fall backwards.
law #1
an object in motion will remain and an object at rest will stay at rest unless a force acts on it.
a balance
a device used to measure mass
2
you swing the baseball bat and hit the ball. It doesn't go as far when the older boys hit the ball.

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