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7th Grade Science Newton's Laws of Motion > All 46 Words That Will Be On Test (10-5-23) > Flashcards

All 46 Words That Will Be On Test (10-5-23) Flashcards

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1
Q

Acceleration

A

Change in velocity over time

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2
Q

Velocity

A

Speed in a given direction

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3
Q

Drag

A

Another term for air resistance or fluid friction

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4
Q

Interia

A

A tendency for an object to resist changes in motion

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5
Q

Weight

A

A measure of the gravitational forces exerted on an object

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6
Q

Mass

A

Amount of matter in an object

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7
Q

Force

A

Push or pull in a given direction

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8
Q

Gravity

A

Force of attraction between any two objects with mass

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9
Q

Balanced Forces

A

When forces acting on an object are equal size, but opposite in direction
Net Force=0

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10
Q

Friction

A

A force between two objects that are touching that opposes motion

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11
Q

Momentum

A

The force or speed at which something moves

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12
Q

Terminal Velocity

A

Final velocity an object reaches when gravity is cancelled out by a drag

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13
Q

Law of Conservation of Momentum

A

In a closed system the total amount of momentum is the same

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14
Q

What is the formula for momentum

A

Mass of an object x it’s velocity

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15
Q

Newton’s Cradle

A

A device that demonstrates the Conservation of Energy

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16
Q

What is the unit for momentum

A

kilograms - meter per second (kg-m/s)

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17
Q

Newton’s 1st Law

A

An object stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force

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18
Q

Newton’s 1st Law

A

Law of Inertia

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19
Q

Newton’s Second Law

A

Force equals mass time acceleration

20
Q

Newton’s Third Law

A

For every action. there is an equal and opposite reaction

21
Q

Unbalanced Forces

A

Forces that produce a nonzero net force, which changes an object’s motion

22
Q

Gravitational Force

A

The force that keeps objects from floating off into space

23
Q

Static Friction

A

Friction that acts on objects that are not moving

24
Q

Rolling Friction

A

Friction that occurs when an object rolls over a surface

25
Q

Sliding Friction

A

Friction that occurs when one surface slides over another

26
Q

Fluid Friction

A

Friction that occurs as an object moves through a fluid

27
Q

9.8 m/s/s

A

The acceleration due to Gravity on Earth is ___?

28
Q

Air Resistance

A

Force that opposes the motions of objects that move through the air

29
Q

Unit for Mass

A

Kilogram (kg)

30
Q

Unit for Momentum

A

kg x m/s

31
Q

Unit for Velocity

A

m/s

32
Q

Unit for Acceleration

A

m/s/s

33
Q

Unit for weight

A

Newtons (N)

34
Q

Unit for Force

A

N (Newtons)

35
Q

Projectile

A

Something sent through the air

36
Q

Net force

A

The combination of all forces acting on an object

37
Q

Formula for Speed

A

distance/time

38
Q

Formula for Distance

A

speed x time

39
Q

Formula for Time

A

distance/speed

40
Q

Average Speed

A

The overall rate of speed at which an object moves; calculated by dividing the total distance an object travels by the total time

41
Q

Doppler Effect

A

An observed change in the frequency of a wave when the source or observer is moving

41
Q

Instantaneous Speed

A

The rate at which an object is moving at a given moment in time

42
Q

Centrifugal Force

A

An apparent force that acts outward on a body moving around a center, arising from the body’s inertia

43
Q

Centripetal Force

A

A force that acts on a body moving on a circular path and is directed toward the center around which the body is moving

44
Q

Speed

A

Distance traveled per unit time

45
Q

RADAR

A

Radio Detection and Ranging

7th Grade Science Newton's Laws of Motion (1 decks)

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