2024年5月13日发(作者：小米9刷机包)

IGCSE Physics 英文物理词汇知识点整理（配图）

1.

0: what is absolute zero in kelvins?

2.

0: what is the voltage of a neutral wire?

3.

(2 x π x orbital radius) / time period: how can you find orbital

speed?

4.

-273: what is absolute zero in degrees?

5.

365: how many days does it take for the earth to orbit the sun?

6.

AC: what type of current is in a mains supply?

7.

acceleration: on a velocity-time graph what does the gradient

symbolise?

8.

acceleration=change in velocity/time taken: what is the

equation relating acceleration, change in velocity and time

taken?

9.

alternating current (current is always changing direction):

what is AC?

10.

alternating voltage: what type of voltage can a transformer

change

11.

ammeter:

what is this symbol?

12.

amplitude and frequency always changes: what is an

analogue signal?

13.

analogue:

what type of signal is this?

14.

angle of reflection: in reflection, angle of incidence =

15.

anything in the circuit that slows the flow down: what is

resistance?

16.

atomic number decreases by 2, mass number decreases by

4: when you emit an alpha particle what happens to the

atomic number and the mass number?

17.

atomic number increases by 1, mass number stays the same:

when you emit a beta particle what happens to the atomic

number and the mass number?

18.

atoms with the same number of protons but a different

number of protons: what are isotopes?

19.

average speed=distance moved/time taken: what is the

equation relating average speed, time taken and distance

moved?

20.

a balance between the forward motion of the object and a

force pulling it inwards: what is an orbit?

21.

balanced forces means no change in velocity: what is

newton's first law?

22.

battery:

what is this symbol?

23.

billions: how many stars are there in our galaxy?

24.

blue: what is the colour of a neutral wire?

25.

brass: what are the pins in a plug made of?

26.

brown: what is the colour of a live wire?

27.

by bashing into atoms and knocking electrons off: how does

nuclear radiation cause ionisation?

28.

by looking at the point where lines of symmetry join: how

can you find the centre of gravity in simple shapes? eg. a

square

29.

by working out the area under the line (with limits if trying

to find the distance travelled between certain time): on a

velocity-time graph how can you find distance travelled in a

certain time?

30.

can burn skin: how can infrared radiation be harmful?

31.

can cause blindness: how can ultraviolet be harmful?

32.

car engine temperature sensors: where can a thermistor be

used?

33.

carpets, curtains: what types of surfaces will absorb sound

waves?

34.

cause tissue damage or cancer: how can gamma ray be

harmful?

35.

cell:

what is this symbol?

36.

changes in density: what are convection currents all about?

37.

charge=current x time: give the equation linking charge,

current and time

38.

coal, oil, natural gas, nuclear fuels (uranium and plutonium):

give 4 examples of non-renewable energy resources

39.

communications: what are radio waves used for?

40.

compasses and iron fillings: what can you use to look at

magnetic field patterns ?

41.

copper: what are the cables made of in a plug?

42.

the creation of a voltage in a wire which is experiencing a

change in magnetic field: what is electromagnetic induction?

43.

current decreases: what happens to current when the

resistance increases?

44.

DC: what type of current is in a battery supply?

45.

diffraction only at edges: diffraction. what happens when the

gap is a bit wider than the wavelength?

46.

digital:

what type of signal is this?

47.

a diode:

what component is this for?

48.

diode:

what is this symbol?

49.

direct current (current always goes in the same direction):

what is DC?

50.

the distance of one whole wave (cycle): what is wavelength?

51.

earth:

what is this symbol?

52.

earth wire: what is the 2nd pin on a plug?

53.

electrical, light, sound, kinetic, nuclear, thermal, gravitational

potential, elastic potential, chemical: what are the nine types

of energy?

54.

electrical power=current x voltage: give the equation linking

electrical power, current and voltage

55.

electric bell:

what is this symbol?

56.

an electric current: what creates a magnetic field?

57.

electrons: when a piece of cloth and a polythene rod are

rubbed together, what is it that moves from the cloth to the

rod?

58.

an electron which has been emitted from the nucleus of an

atom: what is a beta particle?

59.

elliptical (where the sun is near one side of the orbit): what

type of orbit does a comet have?

60.

the emission of electromagnetic waves: what does thermal

radiation involve?

61.

energy and information: what do all waves transfer?

62.

energy cannot be created or destroyed, it can only be

transferred from one form to another: what is the law of

conservation of energy?

63.

energy transferred=current x voltage x time: give the

equation linking energy transferred, time, current and voltage

64.

false: mass includes the force of gravity. true or false?

65.

false: in a series circuit all of the components have different

ammeter readings. true or false?

66.

false: LDR. in bright light the resistance increases. true or

false?