final

Question 1

What does the amount of thermal energy stored in something depend on?

Answer 1

temp, mass, material it is made from

Question 2

What is the specific heat capacity?

Answer 2

Amount of energy it takes to increase 1kg of substance by 1 degree

Question 3

What is specific latent heat

Answer 3

Energy needed to make 1kg of substance change state

Question 4

Equation for change in thermal energy

Answer 4

mass x specific heat capacity x change in temp

Question 5

Equation for thermal energy needed to change state

Answer 5

mass x specific latent heat

Question 6

How is temp of gass measured?

Answer 6

Average kinetic energy

Question 7

What is the pressure of a gas due to

Answer 7

forces on walls of container

Question 8

Units for pressure

Answer 8

Pascals

Question 9

What is a pascal

Answer 9

1N/m2

Question 10

What is absolute xero

Answer 10

-273

Question 11

Why is it absolute xer o

Answer 11

If you continue lines of all gases they meet at 0273

Question 12

What are the lines for

Answer 12

How pressure changes as temp changes

Question 13

What is absolute 0 oin kelvin

Answer 13

0

Question 14

Is 1 degree difference same with kelvin and celcius same

Answer 14

Yes

Question 15

How do you convert between the two

Answer 15

kelvin is 273 above

Question 16

What is average kinetic energy of particles in a gas directly proportional to

Answer 16

temp

Question 17

Equation with pressure and volume

Answer 17

Start p x start v=end p x end v

Question 18

How does doing work on gas increase temp

Answer 18

particles bounce of bike pump and the average speed of them increases

Question 19

up

Answer 19

lift

Question 20

down

Answer 20

weight

Question 21

forward

Answer 21

thrust

Question 22

bnackwards

Answer 22

drag

Question 23

What does a perfect triangle mean

Answer 23

No resultant force

Question 24

What is the motor effect?

Answer 24

When a force is exerted between a magnetic field and a current-carrying conductor placed in that field

Question 25

Other way electric can current can be made using a magnet and a conductor on a small scale

Answer 25

Moving a coil of wire between magnetic poles

Question 26

First part of how a transformer works

Answer 26

An alternating current goes through the primary coil

Question 27

Second part of how a transformer works

Answer 27

This induces a changing magnetic field in the core

Question 28

Third part of how a transformer works

Answer 28

This changing magnetic field induces an electromagnetic force which produces a current in the secondary coil

Question 29

What does a commutator do

Answer 29

Switches connections every half turn

Question 30

First part of microphone working

Answer 30

Sound waves cause variations in air pressure

Question 31

Second part of microphone working

Answer 31

The pressure variations make a diaphragm vibrate

Question 32

Third part of microphone working

Answer 32

The diagram moves a coil of wire back and forth

Question 33

First part of loudspeaker working

Answer 33

Varying current flows through a coil in a magnetic field

Question 34

Second part of loudspeaker working

Answer 34

This causes a force on the coil which moves back and forth as current varies

Question 35

Third part of loudspeaker working

Answer 35

Coil connected to a diagram and the movements of the diaphragm produce sound waves

Question 36

First part of how a step up transformer works

Answer 36

Primary coil has fewer turns

Question 37

Second part of step up transformer working

Answer 37

An AC current produces a magnetic field in the primary coil

Question 38

Third part of step up transformer working

Answer 38

The iron cores magnetic field induces a higher voltage in secondary coil

Question 39

Fourth part of step up transformer working

Answer 39

Power is conserved so this produces a lower current

Question 40

First part of an electric motor working

Answer 40

A coil of wire carrying a current is placed in a magnetic field

Question 41

Second part of an electric motor working

Answer 41

The forces on the two sides perpendicular to the field experiences forces in opposite directions

Question 42

Third part of electric motor working

Answer 42

This causes rotational effect

Question 43

Why must the current flowing through the primary coil of a transformer be alternating

Answer 43

For current to be induced in the secondary coil, the magnetic field in the core must be continuously changing. For the magnetic field to be changing the current in the primary coil must be alternating

Question 44

What does a generator consist of

Answer 44

A coil of wire that is rotated inside a magnetic field

Question 45

What are the ends of the coil connected to in a generator

Answer 45

A slip ring

Question 46

How is electrical contact with an external circuit made in a generator

Answer 46

carbon brushes that press on the slip rings

Question 47

How is magnetic field made

Answer 47

Two opposite permanent magnets on each side

Question 48

What do carbon brushes do in a motor

Answer 48

Make electrical contacts between circuit and motor

Question 49

What is in middle of electrical motor

Answer 49

Pivot

Question 50

Where does ammeter need to be

Answer 50

Part of main circuot

Question 51

Where does voltmeter need to be

Answer 51

In parralel across what you are measuring

Question 52

How many results do you need

Answer 52

Atleast 6 so you can spot a pattern

Question 53

What is ohms law

Answer 53

R=V/I

Question 54

Displacement of iregular solid with measuring cylinder

Answer 54

Half fill it put object in increase in volume is volume of object

Question 55

How do you measure mass

Answer 55

Digital balance

Question 56

Displacement can what is volume of object

Answer 56

Volume of water displaced

Question 57

What is first part of final practical

Answer 57

Investigate the properties of water by determining the | specific heat capacity of water

Question 58

Second part of final core practical

Answer 58

obtaining a temperaturetime graph for melting ice

Question 59

How to set up first part of final practical

Answer 59

Get a joule metre connected to a heater in water with a thermometer in the beaker,

Question 60

Equation for specific heat capacity

Answer 60

Energy/mass x temperature change

Question 61

Do gasses have a fixed volume

Answer 61

No

Question 62

What can liquids do

Answer 62

Diffuse