Physics (Rare) Flashcards

1
Q

Acceleration

A

Rate at which velocity changes with time

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2
Q

Acoustics

A

Science that deals with the study of mechanical waves

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3
Q

Adhesion

A

Tendency for different types of particles to cling together

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4
Q

Aerodynamics

A

Study of the motion of air when it interacts with solid objects

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5
Q

Alloy

A

Metallic mixture of two different elements

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6
Q

Alternating current

A

Movement of electric charge that reverses direction

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7
Q

Ampere

A

Unit of electric current

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8
Q

Angstrom

A

One ten-billionth of a meter

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9
Q

Astronomical unit

A

Distance from Earth to the sun

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10
Q

Background radiation

A

Ionizing radiation that is always present in Earth’s atmosphere

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11
Q

Big Bang

A

Model that explains the early development of the universe

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12
Q

Binary star

A

Star system with two stars orbiting around each other

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13
Q

Black hole

A

Region of space where gravity prevents everything from escaping

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14
Q

Boson

A

Fundamental particle

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15
Q

Buoyancy

A

Upward force that opposes the weight of submerged object

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16
Q

Celsius

A

Scale and measurement unit for temperature

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17
Q

Centripetal force

A

Force that makes something follow a curved path

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18
Q

Cohesion

A

Tendency for like particles to cling together

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19
Q

Density

A

Mass per volume

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20
Q

Dew point

A

Temperature at which water vapor condenses to liquid water

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21
Q

Displacement

A

Fluid moving out of the way when an object is placed in it

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22
Q

Doppler effect

A

Change in the frequency of a wave when the observer moves

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23
Q

Drag

A

Air resistance or fluid resistance

24
Q

Elasticity

A

Property of an object returning to its original shape after a force is applies

25
Q

Endothermic

A

Reaction in which the system absorbs energy from its surroundings

26
Q

Farad

A

Unit of capacitance

27
Q

Fission

A

Process in which the nucleus of an atom splits into smaller parts

28
Q

Force

A

Mass times acceleration

29
Q

Friction

A

Force resisting the motion of materials sliding against each other

30
Q

Fusion

A

Process in which multiple atomic nuclei join to create a larger nucleus

31
Q

Gamma Ray

A

Electromagnetic radiation of high frequency

32
Q

General relativity

A

Einstein’s theory of gravitation

33
Q

Hertz

A

Unit of frequency, defined as cycles per second

34
Q

Inertia

A

Resistance of an object to change in its motion

35
Q

Joule

A

Unit of heat

36
Q

Lever

A

Simple machine consisting of a beam pivoting on a hinge

37
Q

Light

A

Electromagnetic radiation visible to the human eye

38
Q

Mass

A

Amount of matter in a body

39
Q

Matter

A

Anything that has mass and volume

40
Q

Momentum

A

Mass times velocity

41
Q

Neutrino

A

Neutral elementary particle

42
Q

Ohm

A

Unit of electrical resistance

43
Q

Pendulum

A

Suspended weight that can swig on a pivot

44
Q

Photon

A

Elementary particle of light

45
Q

Pneumatics

A

Application of pressurized gas to affect motion

46
Q

Pressure

A

Ratio of force to area

47
Q

Pulley

A

Simple machine, a wheel on an axle that moves a cable along its circumference

48
Q

Quantum mechanics

A

Physics dealing with atomic and subatomic particles

49
Q

Supernova

A

Explosion of a star

50
Q

Temperature

A

Physical property that expresses notions of hot and cold

51
Q

Torque

A

Tendency of a force to rotate an object on an axis

52
Q

Transducer

A

Device that converts energy from one form to another

53
Q

Uncertainty principle

A

Principle that the position and momentum of a particle cannot be simultaneously known

54
Q

Vacuum

A

Space that is empty of matter

55
Q

Watt

A

Unit of power