Brainscape's Knowledge GenomeTM

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


See full index

Science > Physics Paper 1 > Flashcards

Physics Paper 1 Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is the law of conservation of energy

A

Energy cannot be created or destroyed,only transformed into another type of energy

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

What does the national grid do

A

Gets electricity from power stations to our houses

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

Describe the journey of electricity from power stations to houses

A 
Power station generates electricity 
Moves to step up transformer 
Then through a network of cables and pile ins 
The to a step down transformer 
Then into our houses
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What so step up transformers do

A

Take electricity from a low voltage to a high voltage so the energy can move through a system with less energy loss = more efficient

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

What do step down transformers do

A

Take electricity from a high voltage to a low voltage to make it safe for our homes

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

Solid to liquid

A

Melting

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

Liquid to gas

A

Evaporating

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

Gas to liquid

A

Condensing

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

Liquid to solid

A

Freezing

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

Solid to gas

A

Sublimation

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

What is density

A

The amount of mass in a set volume

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

Density equation

A

Mass % volume

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

How big is an atom

A

0.1-0.5 nanometers

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

Where are the protons and neutrons found

A

In the nucleus

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

Where are the electrons found

A

In the outer shell

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

Mass and charge of a proton

A

Mass= 1

Charge =+1

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

Mass and charge of an electron

A

Mass=1/2000

Charge=-1

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

Mass and charge of neutron

A

Mass=1

Charge=0

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

Which is the atomic number and which is the mass number

A

Mass number=big number

Atomic =smaller number

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

What is the mass number

A

Protons + neutrons

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

What is the atomic number

A

The number of protons therefore also the number of neutrons

22
Q

How to work out the amount of neutrons

A

Mass number-atomic number

23
Q

What is the charge of an atom

A

They have no overall charge

24
Q

What is an ion

A

An atom that has lost or gained an electron

25
Q

What is an isotope

A

An element that has a duplicate but with a different mass number

26
Q

What did Thompson discover about the atom

A

That it has electrons

He created a plum pudding model which was a positive sphere with negative bits dotted through

27
Q

What did Rutherford discover about the atom

A

Discovered the plum pudding had a solid positive centre =the nucleus

28
Q

What did Chadwick discover about the atom

A

They had neutrons

29
Q

How did Rutherford test the plum pudding model

A

He did a test with alpha particles and gold foil
Some alpha particles were shot into it
Most went straight through but some bounced back
This leaf Rutherford to conclude that there is something solid in the middle of an atom, the NUCLEUS

30
Q

Advantages of renewable energy

A

Doesn’t usually release harmful co2

Infinite

31
Q

Disadvantages of renewable

A

Solar power can’t occur during the day
Expensive
Some rely on specific weather conditions
Tidal and wave power can disrupt local wildlife

32
Q

Advantages of fossil fuels

A

Very readily available
Cheaper
Coal power stations have a very short start up time

33
Q

Disadvantages of fossil fuels

A

Coal,oil and gas take millions of years to form
Very heavily polluting
Nuclear radioactive waster has to be stored

34
Q

What is charge

A

Charge = value for electricity flowing in a circuit

35
Q

Current

A

Flow of electrons

36
Q

Potential difference

A

Pushes current around

37
Q

Resistance

A

Slows current

38
Q

Equation for charge

A

Charge= current x time

39
Q

Unit of charge

A

Coulombs

40
Q

Equation for potential difference

A

Current x resistance

41
Q

Potential difference unit

A

Volts

42
Q

What does a thermistor do

A

Only lets current flow at certain temperatures

Uses central heating

43
Q

What do light dependant resistors do

A

Used in street lights and security lights

44
Q

What is wasted energy

A

Any energy that comes out of a situation but isn’t intended to be there

45
Q

What’s an example of wasted energy

A

Electrical
Becomes light which is useful
Heat and sound is released as wasted energy

46
Q

What is the law of conservation of energy

A

Energy cannot be created or destroyed,only transformed into another type of energy

47
Q

What happens to wasted energy

A

It dissipates into the surroundings

48
Q

What can detect heat

A

An infrared camera

49
Q

What colours are the hot and cold parts on a camera

A

Blue parts=cold

Red parts=hot

50
Q

What can help insulate houses

A 
Double glazing 
Cavity wall insulation 
Carpet 
Curtains 
Double glazing
51
Q

Examples of renewable energy

A

Tidal power
Wave power
Hydroelectric power
Geothermal power

52
Q

Examples of non-renewable energy

A

Coal
Oil
Gas
Nuclear power

Science (3 decks)

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