Brainscape's Knowledge GenomeTM

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


See full index

Physics Yr. 10 > Paper 1 topics > Flashcards

Paper 1 topics Flashcards

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

what are some examples of energy stores? (there’s 7)

A

gravitational potential energy
elastic potential energy
thermal energy
kinetic energy
nuclear energy
electrical energy
chemical energy

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

what are some ways for an energy transfer to take place?

A

heating
work done by forces
work done when a current flows

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

what is specific heat capacity?

A

the amount of energy needed to raise the temperature of 1kg of a substance by 1 degree

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

what is specific latent heat?

A

the amount of energy needed to change the state of 1kg of a substance with no change in temperature

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

what is the definition of power?

A

the rate at which work is done

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

what does dissipated energy mean?

A

energy transferred to the surroundings

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

what is the law of conservation of energy?

A

energy cannot be created or destroyed, only transferred

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

how can the efficiency of an intended energy transfer be increased?

A

mechanical machine - lubrication
thermal energy transfers - insulation

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

what does renewable mean?

A

it doesn’t run out, and can always be accessed

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

what does non-renewable mean?

A

it can run out and can’t be used forever

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

what are examples of renewable energy? (theres 6)

A

solar energy
hydro-electric energy
wind energy
geothermal energy
tidal energy
wave energy

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

what are examples of non-renewable energy?

A

fossil fuels (coal, gas and oil)
nuclear energy

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

what are the main energy sources available?

A

fossil fuels
solar energy
nuclear energy

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

what is the current’s value at any point in a single closed loop?

A

it stays the same throughout

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

what does a thermistor do?

A

measure the temperature of a device

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

what is an LDR?

A

Light Dependent Resistor

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

what happens to the resistance of the thermistor if the temperature is increased?

A

the resistance decreases

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

what happens to the temperature if the resistance of the thermistor is decreased?

A

the temperature increases

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

what happens to the resistance of the LDR when the light intensity increases?

A

the resistance decreases

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

what happens to the light intensity when the resistance of the LDR decreases?

A

the light intensity increases

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

what colour is the live wire?

A

brown

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

what colour is the neutral wire?

A

blue

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

what colour is the earth wire?

A

green and yellow

24
Q

what does the live wire do?

A

it carries alternating potential difference from the supply

25
Q

what does the neutral wire do?

A

it completes the circuit

26
Q

what does the earth wire do?

A

it is a safety wire that stops the appliance from becoming live

27
Q

what is the potential difference between the live wire and the earth wire?

A

230V

28
Q

what is the potential difference of the earth wire?

A

0V

29
Q

what is the potential difference of the neutral wire?

A

close to or at 0V

30
Q

when does the earth wire carry current?

A

when there is a fault in the circuit

31
Q

when is work done?

A

when charge flows through a circuit

32
Q

what is the National Grid?

A

a way to transfer electrical power from power stations to consumers

33
Q

how does the National Grid work? (process of it)

A
  • before the electrical power leaves the
    power station, it is transferred at high
    voltages by using ‘step-up transformers’
    which increases the voltage to around
    275, 000V
  • then the electrical power travels through
    the high-voltage transmission lines
  • the electric power’s voltage is decreased
    to 230V by ‘step-down transformers’
  • the electric power is then transferred to
    consumers
34
Q

why is the national grid efficient? (HEATING)

A

when the current in a cable is higher, more energy is dissipated through heating, and as the high currents waste more energy than the low currents, the electrical power is transported around the grid at a high voltage and low current

35
Q

what does dissipated mean?

A

transferred to the surroundings

36
Q

how does a material become electrically charged? (why, what happens with the electrons?)

A

by rubbing certain insulating materials against each other because the negatively charged electrons are rubbed off one material onto the other. the material that gains the negative electrons becomes negatively charged. the material that lost its negative electrons becomes positively charged

37
Q

what happens when 2 electrically charged objects are put near each other?

A

they exert a force on each other

38
Q

what do 2 objects carrying the same charge do?

A

they repel

39
Q

what do 2 objects carrying different charges do?

A

they attract

40
Q

what are attraction and repulsion both examples of?

A

non-contact forces

41
Q

what happens to the strength of the electric field the closer it is to the charged object?

A

it is strongest when it is closest to the charged object

42
Q

what happens to the strength of the electric field the further away it is from the charged object?

A

it weakens the further away from the charged object it is

43
Q

what is the concept of an electric field?

A

the electric field is where charges experience a force

44
Q

how are changes of state different to chemical changes?

A

when changes of state are reversed, they always regain their original properties

45
Q

what is internal energy?

A

the energy stored inside a system by the particles that its made up of, and is also the total kinetic and potential energy of all the particles

46
Q

what is pressure measured in?

A

Pascals (Pa)

47
Q

how can the pressure of a gas be increased?

A
  • by doing work on the gas, as this increases the internal energy of the gas which causes an increase in temperature
  • by making the container smaller
  • heating the gas
48
Q

who discovered electrons?

A

thomson

49
Q

who carried out the alpha particle experiment?

A

geiger and marsden

50
Q

who discovered the nucleus?

A

rutherford

51
Q

who discovered that atoms have shells/energy levels?

A

bohr

52
Q

who discovered neutrons in the nucleus?

A

chadwick

53
Q

what does direct potential difference mean?

A

a constant potential difference that always flows in the same direction

54
Q

what does alternating potential difference mean?

A

a potential difference that changes direction regularly

55
Q

what is the specific latent heat of vaporisation?

A

the amount of energy needed for 1kg of a substance to change from a liquid to a gas without a change of temperature

56
Q

what is the specific latent heat of fusion?

A

the amount of energy needed for 1kg of a substance to change from a solid to a liquid without a change in temperature

Physics Yr. 10 (2 decks)

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