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Physics Edexel > IGCSE REVISION (FORM 4) > Flashcards

IGCSE REVISION (FORM 4) Flashcards

1
Q

state the standard scientific units for weight

A

N (vector)

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2
Q

Density

A

The amount of mass per unit volume

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2
Q

state the standard scientific units for acceleration

A

m/s2 (vector)

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2
Q

state the standard scientific units for volume

A

m3

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3
Q

Isotope

A

An atom where there is the same number of protons but different number of neutrons

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3
Q

Voltage

A

The electrical energy difference for 1 Coulomb of charge

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3
Q

state the standard scientific units for power

A

Watt

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4
Q

Current

A

The amount of charge flowing in 1 second

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5
Q

state the equation used to calculate force

A

F (force) = m (mass) x a (acceleration)

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5
Q

state the equation to calculate critical angle

A

sin (critical angle) = 1 / refractive index

Sin(c) = 1/n

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6
Q

Kinetic Energy

A

The energy associated with the motion of an object

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6
Q

state the standard scientific units for voltage

A

V

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6
Q

state the standard scientific units for area

A

m2

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6
Q

state the standard scientific units for kinetic energy

A

J

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6
Q

state the equation used to calculate velocity

A

v (velocity) = D (distance) / t (time)

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7
Q

state the standard scientific units for density

A

kg/m3

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7
Q

state the equation for law of reflection

A

i=r

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9
Q

Work Done

A

The amount of energy changed from one form to another

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10
Q

Acceleration

A

The change in velocity in 1 second

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11
Q

state the equation used to calculate wave speed

A

wave speed = frequency x wavelength

v = f × λ

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12
Q

state the equation used to calculate pressure

A

pressure = force / area

P = F / A

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13
Q

state the equation used to calculate density

A

density = mass / volume

p = m / V

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15
Q

Longitudinal Wave

A

A wave where the oscillations are parallel to the direction of the wave

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16
Q

state the standard scientific units for time

A

s

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17
Q

Transverse Wave

A

A wave where the oscillations are perpendicular to the direction of the wave

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18
Q

Period

A

The time for one complete oscillation

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19
Q

Power

A

The amount work done in 1 second

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19
Q

state the standard scientific units for Pressure

A

Pa, N/m2

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20
Q

Pressure

A

The force per unit area

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21
Q

Total Internal Reflection

A

The reflection of a wave when it meets a boundary at an angle greater than the critical angle

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23
Q

Amplitude

A

The distance from the equilibrium position of a wave to the peak

24
Q

state the equation used to convert kelvin to celcius

A

Kelvin = Celsius + 273.15

25
Q

state the standard scientific units for wavelength

25
Q

state the equation used to calculate energy transfer

A

Energy tranfer = Work done

27
Q

Radiation

A

The transfer of energy using electromagnetic waves

29
Q

state the equation used to calculate work done

A

work done = force x distance moved in direction of force

WD= F x d

31
Q

Efficiency

A

The useful work done divided by the total energy put in

32
Q

Terminal Speed

A

The constant speed of an object when the driving force is balanced by friction

34
Q

Resistance

A

The opposition to the flow of current in a circuit

35
Q

state the standard scientific units for current

35
Q

state the equation used to calculate voltage (Ohm’s Law)

A

voltage = current x resistance

V = I x R

37
Q

Velocity

A

The distance an object travels in a certain direction in 1 second

39
Q

Frequency

A

The number of oscillations in 1 second

39
Q

Convection

A

the transfer of heat, due to it being carried by a moving fluid

40
Q

state the equation to calculate efficiency

A

useful energy out/total energy in

41
Q

state the equation used to calculate electrical power

A

electrical power = current x voltage

P = I x V

42
Q

state the equation to calculate weight

44
Q

Gamma Waves

A

High frequency electromagnetic waves

45
Q

Refraction

A

The bending of a wave when it moves from one material into another

46
Q

state the equation to calculate a spring constant (Hooke’s law)

A

force = spring constant x extension

F = ke

47
Q

state the standard scientific units for energy

48
Q

state the standard scientific units for resistance

49
Q

state the standard scientific units for force

A

N (vector)

50
Q

Brownian Motion

A

The random motion of atoms and molecules in a gas or liquid

51
Q

state the standard scientific units for mass

53
Q

Gravitational Potential Energy

A

The energy an object has due to its position in a gravitational field

55
Q

state the standard scientific units for displacement

A

m (vector)

56
Q

Conduction

A

The transfer of heat due to collisions between particles

57
Q

state the equation to calculate GPE

59
Q

Critical Angle

A

The angle of incidence when the angle of refraction is 90 degrees

60
Q

state the standard scientific units for distance

61
Q

state the equation used to calculate charge

A

charge = current x time

Q = I x t

62
Q

state the standard scientific units for charge

63
Q

state the equation to calculate KE

A

kinetic energy = 1/2 x mass x speed2

1/2 m x v2

64
Q

Wavelength

A

The distance a wave travels for one complete oscillation

65
Q

Boyle’s Law

A

The pressure of gas is inversely proportional to the volume

66
Q

state the standard scientific units for velocity

A

m/s (vector)

67
Q

Ultrasound

A

Sound waves with a frequency greater than 20kHz

69
Q

state the standard scientific units for speed

70
Q

Weight

A

The force on an object as a result of gravity

71
Q

state the standard scientific units for gravitational field strength

A

N/kg, m/s2 (vector)

72
Q

state the equation to calculate acceleration

A

acceleration = change in velocity / time taken

a = (v - u) / t

73
Q

state the standard scientific units for frequency

A

Hz, /s, s-1

74
Q

List the E-M Spectrum

A

Radio, Micro, Infra-Red, Visible, Ultra-Violet, X-rays, Gamma-rays

75
Q

state the equation to calculate time period

A

time period = 1 / frequency

T = 1/f

76
Q

state the equation used for Boyle’s Law

Physics Edexel (8 decks)

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