Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Physics > Physics Paper 2 GCSE > Flashcards

Physics Paper 2 GCSE Flashcards

You may prefer our related Brainscape-certified flashcards:
Physics 101 flashcards AP® Physics flashcards
1
Q

What does scalar quantities only have?

A

magnitude

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What does vector quantities have?

A

magnitude and an associated direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How is vector quantities represented?

A

arrow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does the length of the vector quantities arrows show?

A

magnitude

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does the direction of the arrow representing vector quantities show?

A

direction of the vector quantity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is a force?

A

a push or a pull that acts on an object due to the interaction with another object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the forces between objects?

A

contact forces - the objects are physically touching

non-contact forces - the objects are physically seperated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is weight?

A

force acting on an object due to gravity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What does the weight of an object depend on?

A

gravitational field strength at the point where the object is

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How do you calculate weight?

A

mass x gravitational field strength

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the gravitational field strength of the earth?

A

10 n/kg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How do you calculate work done?

A

force x distance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is one joule in newton-metre?

A

1 newton-metre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does work done against the frictional forces acting on an object cause?

A

rise in the temperature of the object.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

To change the shape of an object what must happen?

A

more than one force has to be applied – this is limited to stationary objects only

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Whats elastic deformation?

A

elastic deformation is a change in shape of a material at low stress that is recoverable after the stress is removed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Whats inelastic deformation?

A

a deformation occurring when a material is stressed beyond its elastic limit.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the extension of an elastic object like compared to the force applied?

A

The extension of an elastic object, such as a spring, is directly proportional to the force applied, provided that the limit of proportionality is not exceeded.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

How do you calculate force?

A

spring constant x extension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What type of energy is stored in a spring?

A

elastic potential energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

How do you calculate elastic potential energy?

A

0.5 x spring constant x (extension)2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

How do you calculate moment of a force?

A

force x distance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

How can you calculate pressure?

A

force normal to a surface/area of that surface

height of the column x density of the liquid x gravitational field strength

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

A partially (or totally) submerged object experiences what?

A

a greater pressure on the bottom surface than on the top surface. This creates a resultant force upwards. This force is called the upthrust.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What does displacement include?

A

Displacement includes both the distance an object moves, measured in a straight line from the start point to the finish point and the direction of that straight line. Displacement is a vector quantity.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is speed?

A

Speed does not involve direction. Speed is a scalar quantity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What is a typical value of someone walking?

A

1.5 m/s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What is a typical value of someone running?

A

3 m/s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What is a typical value of someone cycling?

A

6 m/s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What is the typical value for the speed of sound in air?

A

330 m/s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

For an object moving at constant speed the distance travelled in a specific time can be calculated using what equation?

A

speed× time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

What is the velocity?

A

The velocity of an object is its speed in a given direction. Velocity is a vector quantity.

33
Q

Motion in a circle involves what?

A

constant speed but changing velocity.

34
Q

How do you calculate acceleration?

A

change in velocity/time taken

35
Q

The distance travelled by an object can be calculated using what?

A

the area under a velocity–time graph

36
Q

How do you calculate uniform acceleration?

A

(finalvelocity)2− (initialvelocity)2 = 2 x acceleration× distance

37
Q

Near the Earth’s surface any object falling freely under gravity has an acceleration of what?

A

9.8 m/s2

38
Q

An object falling through a fluid initially accelerates due to what?

A

force of gravity. Eventually the resultant force will be zero and the object will move at its terminal velocity.

39
Q

What is newtons first law tell us?

A

If the resultant force acting on an object is zero and:
• the object is stationary, the object remains stationary
• the object is moving, the object continues to move at the same speed and in the same direction. So the object continues to move at the same velocity. So, when a vehicle travels at a steady speed the resistive forces balance the driving force. So, the velocity (speed and/or direction) of an object will only change if a resultant force is acting on the object.

40
Q

What is Newtons second law?

A

The acceleration of an object is proportional to the resultant force acting on the object, and inversely proportional to the mass of the object.
resultant force = mass x acceleration
• inertial mass is a measure of how difficult it is to change the velocity of an object
• inertial mass is defined as the ratio of force over acceleration.

41
Q

What is newtons third law?

A

Whenever two objects interact, the forces they exert on each other are equal and opposite.

42
Q

What is stopping distance of a vehicew?

A

the sum of the distance the vehicle travels during the driver’s reaction time (thinking distance) and the distance it travels under the braking force (braking distance).

43
Q

What is the reaction time of a person?

A

Typical values range from 0.2 s to 0.9 s.

44
Q

How do you calculate momentum?

A

mass x velocity

45
Q

What are the two types of waves?

A

transverse or longitudinal

46
Q

The ripples on a water surface are an example of what?

A

transverse waves

47
Q

What are sound waves?

A

longitudinal wave

48
Q

what does Longitudinal waves show?

A

areas of compression and rarefaction

49
Q

What is an amplitude of a wave?

A

maximum displacement of a point on a wave away from its undisturbed position.

50
Q

What is the wavelength of a wave?

A

distance from a point on one wave to the equivalent point on the adjacent wave

51
Q

What is the frequency of a wave?

A

number of waves passing a point each second.

52
Q

How do u calculate the period?

A

1/frequency

53
Q

What is wave speed?

A

speed at which the energy is transferred (or the wave moves) through the medium.

54
Q

How do you calculate wave speed?

A

frequency x wavelength

55
Q

What does sound waves withing the ear cause?

A

cause the ear drum and other parts to vibrate which causes the sensation of sound. The conversion of sound waves to vibrations of solids works over a limited frequency range. This restricts the limits of human hearing.

56
Q

What is the range of normal human hearing?

A

20Hz to 20kHz

57
Q

What are electromagnetic waves?

A

transverse waves that transfer energy from the source of the waves to an absorber. Electromagnetic waves form a continuous spectrum and all types of electromagnetic wave travel at the same velocity through a vacuum (space) or air.

58
Q

Types of waves from long wavelength to short wavelength or low frequency to high frequency?

A 
Radio waves
microwaves
infrared
visible light
ultraviolet
X-rays
Gamma rays
59
Q

Different substances may what?

A

Different substances may absorb, transmit, refract or reflect electromagnetic waves in ways that vary with wavelength

60
Q

Radio waves can be produced by what?

A

oscillations in electrical circuits.

61
Q

When radio waves are absorbed they may create a what?

A

alternating current with the same frequency as the radio wave itself, so radio waves can themselves induce oscillations in an electrical circuit.

62
Q

Changes in atoms and the nuclei of atoms can result in what?

A

electromagnetic waves being generated or absorbed over a wide frequency range. Gamma rays originate from changes in the nucleus of an atom.

63
Q

Ultraviolet waves can cause what?

A

skin to age prematurely and increase the risk of skin cancer.

64
Q

What type of radiation is X-rays and gamma rays and what does it cause?

A

ionising radiation that can cause the mutation of genes and cancer.

65
Q

How do u calculate magnification?

A

image height/object height

66
Q

all bodies (objects) emit what?

A

radiation

67
Q

the intensity and wavelength distribution of any emission depends on what?

A

the temperature of the body

68
Q

A body at constant temperature is absorbing radiation at the same rate as it is what?

A

emitting radiation. The temperature of a body increases when the body absorbs radiation faster than it emits radiation.

69
Q

The temperature of the Earth depends on many factors including what?

A

the rates of absorption and emission of radiation, reflection of radiation into space.

70
Q

the temperature of a body is related to what?

A

the balance between incoming radiation absorbed and radiation emitted

71
Q

The poles of a magnet are the places where the magnetic forces are what?

A

stringest

72
Q

A permanent magnet produces its own what?

A

magnetic field.

73
Q

An induced magnet is what?

A

a material that becomes a magnet when it is placed in a magnetic field. Induced magnetism always causes a force of attraction. When removed from the magnetic field an induced magnet loses most/all of its magnetism quickly.

74
Q

A magnetic compass contains what?

A

a small bar magnet. The Earth has a magnetic field. The compass needle points in the direction of the Earth’s magnetic field.

75
Q

When a current flows through a conducting wire a magnetic field is produced around the wire. The strength of the magnetic field depends on what?

A

the current through the wire and the distance from the wire.

76
Q

Shaping a wire to form a solenoid increases what?

A

the strength of the magnetic field created by a current through the wire.

77
Q

How do you calculate force which included magnetic flux density?

A

magnetic flux density x current x length

78
Q

What is the basis of an electric motor?

A

A coil of wire carrying a current in a magnetic field tends to rotate

Physics (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions