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Science > Science Vocab > Flashcards

Science Vocab Flashcards

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1
Q

acceleration

A

the rate at which velocity changes

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2
Q

action-reaction pairs

A

two forces, acting on different bodies, having equal strength but opposite direction

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3
Q

air resistance

A

the force of air against a moving object; also called drag

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4
Q

average speed

A

the total distance an object travels divided by the total time it takes to travel the distance

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5
Q

balanced forces

A

forces, acting on the same body, equal in size but opposite in direction

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6
Q

constant speed

A

no change in speed

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7
Q

drag

A

air resistance- the force of air against a moving object

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8
Q

force

A

a push or pull one body exerts against another

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9
Q

friction

A

a force that opposes motion between two surfaces that are touching each other

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10
Q

gravity

A

the mutual force of attraction that exists between all objects in the universe, force Earth exerts on all objects on or near it

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11
Q

intertia

A

the property of a body that resists any change in velocity

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12
Q

kinetic energy

A

energy of motion

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13
Q

mass

A

the amount of matter in an object’ the measure of the inertia of a body

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14
Q

matter

A

anything that has mass and takes up space

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15
Q

motion

A

change in position

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16
Q

negative acceleration

A

the rate of decrease in velocity

17
Q

net force

A

force that results from unbalanced forces acting on an object; changes the motion of an object

18
Q

newton

A

the unit of force; force required to accelerate a 1-kg mass at the rate of 1 m/s/s

19
Q

physicists

A

scientists who study the structure and interaction of matter as well as the changes in position that matter undergoes

20
Q

potential energy

A

the energy of objects due to their position or condition

21
Q

spring scale

A

a device used to measure force

22
Q

unbalanced forces

A

forces acting on the same body, unequal in size and/or opposite in direction

23
Q

velocity

A

the speed and direction of a moving object

Science (2 decks)

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