Brainscape's Knowledge GenomeTM

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


See full index

Everything > Physics Gcse > Flashcards

Physics Gcse Flashcards

1
Q

What is velocity?

A

Speed in given direction

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

What is acceleration?

A

Change I’m velocity - could mean change of speed

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

What is deceleration?

A

Negative acceleration

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

What happens when you accelerate around a corner?

A

If you maintain the same speed you will be accelerating as your direction is changing

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

How do you work out acceleration?

A

Change in velocity/time taken
Or
Final velocity-initial velocity/time taken

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

What is drag?

A

Caused by forces which oppose the motion of an object

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

How is air resistance caused?

A

Colliding air particles that they’re trying to go through

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

3 ways a cars drag can be reduced?

A

Aerodynamics
Weight
Speed

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

What is the stopping distance?

A

Time taken between becoming aware of need to stop and stopping

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

What is thinking distance?

A

Becoming aware of need to stop and moving foot to break

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

What is breaking distance?

A

Distance between putting foot on break and actually stopping

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

What is mass?

A

Amount of matter/atoms an object has

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

What is mass measured in?

A

Kg

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

What is weight?

A

The force an object feels due to gravity

e.g. Astronauts say they feel weightless but they still have the same mass

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

The bigger the mass…

A

…the higher the the gravity

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

How to calculate weight?

A

Weight = mass x gravity

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

What is work done?

A

Energy transferred during a process

18
Q

How to work out work done?

A

Force x distance moved in direction of force

19
Q

What is power?

A

How quickly energy is transferred

20
Q

What happens when energy is transferred quickly?

A

High power

21
Q

What happens when energy is transferred slowly?

A

Low power

22
Q

Ways to reduce energy?

A

Install boiler - expensive, saves most = 6.5 years to pay
Install double glazing - most expensive, saves least = £120
Install wall insulation - cheap = 2 years and 9 months to pay
Install loft insulator - short payback time = 2 years

23
Q

Types of energy?

A 
Magnetic
Kinetic
Heat
Light
Gravitational potential energy
Chemical
Sound
Electric
Elastic potential
Nuclear
24
Q

What is gravitational potential energy?

A

Energy stored in an object in a g.p. field

25
Q

How to work out gravitational potential energy?

A

Mass x g.field x height

26
Q

How to work out momentum?

A

Mass x velocity

27
Q

What’s the law of conservation of momentum?

A

Momentum before an event must be equal to momentum after

28
Q

What is flow of electrons called?

A

Current

29
Q

How is current measured?

A

With an ammeter, how fast negative charge flows around the circuit

30
Q

What is an analogy?

A

Compare on situation to the other and understand idea as accurately as possible

31
Q

What is Ohm’s Law?

A

Potential difference = current x resistance

32
Q

How does p.d. behave in a series circuit?

A

P.d. gained by cells is divided between two components

33
Q

How does current behave in a series circuit?

A

All current is equal in all parts

34
Q

What happens in a parallel circuit?

A

Current splits between each branch

35
Q

What happens to the resistance when the temp of a resistor increases?

A

Atoms vibrate more

36
Q

What is the earth wire (g+y)?

A

Transfers energy away from device if there’s a fault

37
Q

What is the neutral wire (blue)?

A

Completes circuit and has p.d. of 0V

38
Q

What is the live wire (brown)?

A

Provides energy to device - p.d. = 230V

39
Q

Why is copper good for wires?

A

Good conductor
Malleable
Won’t retract when bent

40
Q

Why is brass good for pins?

A

Good conductor
Harder than copper
Does not corrode

41
Q

How do you work out power?

A

Energy/time
Or
Current x p.d.

Everything (11 decks)

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