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School > Science Unit 2 Vocabulary > Flashcards

Science Unit 2 Vocabulary Flashcards

1
Q

Change in velocity

A

acceleration

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2
Q

Part of a force pair. Causes a reaction. Opposite direction of reaction.

A

Action force

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3
Q

Force of air pushing against a moving object
(Contact Force)

A

Air resistance

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4
Q

A force that is acted onto an object. It is applied to an object by another object. (Contact Force)

A

Applied Force

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5
Q

Forces with a net force of zero. Equal and opposite. No acceleration.

A

Balanced force

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6
Q

When an object’s direction is changing, but the speed remains the same.

A

Centripetal acceleration

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7
Q

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

A

Centripetal Force

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8
Q

acting perpendicular to the direction of motion. Moving around in a circle.

A

Circular motion

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9
Q

A force that occurs as a result of two or more objects that touch each other. Six types.

A

Contact Force

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10
Q

A collision where no kinetic energy is lost. Two objects have no shape distortion. The same before and after. Objects energy is transferred to the other. The momentum is the same both before and after.

A

Elastic collisions

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11
Q

A non-contact force that involves charged particles and their association with each other.
Negative charged particles and positive charged particles attract. other combinations repel .
Positive is attracted to the negative.

A

Electromagnetic Force

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12
Q

Friction of the surface that interacts with a fluid. Liquid or a gas.

A

Fluid friction

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13
Q

A push or a pull on an object. Has strength and direction. Vector measure.

A

Force

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14
Q

Action and Reaction force.
One causes the other.
Also called opposite forces.
Ex: Gravity & Normal Force
Going in opposite directions. Both occur at the same time. Equal in magnitude and opposite direction.

A

Force pairs

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15
Q

Generated by two objects moving against each other. the resistance that one surface or object encounters when moving over another.

A

Friction

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16
Q

The acceleration of this force is 9.8 m/s^2. Opposite of normal force. An invisible force that attracts or pulls objects to each other. Objects with more mass have more of this.

A

Gravity

17
Q

mass and gravity

A

positive direct and linear

18
Q

gravity and direction

A

negative inverse and non linear or exponential

19
Q

A collision which results in kinetic energy to be lost(transferred another way). Shape distortion might be present. Converted into another type of energy. The momentum of the beginning and end is not the same.

A

inelastic collisions

20
Q

Based solely on mass. The objects tendency to resist acceleration.

A

Inertia

21
Q

Something affected by position or location. ex: weight

A

Location dependent

22
Q

Something not affected by position or location. Always stays the same.
Ex: Mass

A

Location independent

23
Q

Combination of forces acting on an object.
If the forces are acting in the same direction then add.
If they are acting in opposite directions that subtract.

A

Net force

24
Q

SI unit for weight.
kg*m/s^2

A

Newton

25
Q

Forces that don’t require them to be in contact or touch.
Ex: electromagnetic force

A

Non-contact Force

26
Q

The contact force that is perpendicular to the surface. Opposite of gravity. Upward mostly.

A

Normal force

27
Q

forces going in opposite directions.

A

Opposite force

28
Q

The force that is part of a force pair. Results of Action force. Caused by another force.

A

Reaction Force

29
Q

An object that orbits or revolves around another.

A

Satellite

30
Q

Friction caused by an object sliding past another. There is movement when this force occurs.

A

Sliding friction

31
Q

Force that involves compression and stretch. Springs.

A

spring force

32
Q

a type of friction force that acts on a body when there is no relative motion between the object and the surface. There is no movement when this occurs.

A

Static friction

33
Q

A pulling force
rope or pulley

A

Tension Force

34
Q

Net force other than zero. Causes motion. Acceleration is present.

A

Unbalanced force

35
Q

Arrows or amounts that have direction

A

Vector

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