General

Question 1

What is Newton’s first law?

Answer 1

A stationary object will stay stationary and a moving object will keep on moving unless a resultant force acts upon it

Question 2

What is Newton’s second law?

Answer 2

The rate at which an object accelerates is proportional to the resultant force that acts upon it, and inversely proportional to the objects mass

Question 3

What is Newton’s third law?

Answer 3

Whenever two bodies react, the forces they exert on each other are equal and opposite

Question 4

What are some uses of electrostatics?

Answer 4

Spray painting
Photocopiers
Crop spraying

Question 5

How do you find distance on a velocity time graph?

Answer 5

Area under the graph

Question 6

What happens if you double your speed?

Answer 6

Thinking distance doubles
Braking distance quadruples

Question 7

What is terminal velocity?

Answer 7

When the resultant force acting on a falling object is zero it will travel at a constant velocity

Question 8

What is the human hearing range?

Answer 8

20Hz -> 20,000 Hz

Question 9

What is the law of reflection?

Answer 9

Angle of incidence = angle of reflection

Question 11

What are the stores of energy?

Answer 11

Thermal
Electrostatic
Kinetic
Chemical
Nuclear
Elastic potential
Gravitational potential
Magnetic

Question 12

What are the energy transfers?

Answer 12

Mechanical
Radiation
Electrical
Heating

Question 13

What is conduction?

Answer 13

When vibrating particles pass on their extra kinetic energy to neighbouring particles

Question 14

What is convection?

Answer 14

When more energetic particles move from a hotter to cooler region and transfer energy

Question 15

What does conduction occur best in?

Answer 15

Solids

Question 16

What does convection occur in?

Answer 16

Liquid or gas

Question 17

What are the uses of nuclear fusion?

Answer 17

Abundent fuels
It is clean
Safe as no chain reactions
Less radioactive waste

Question 18

What two things does kinetic energy rely on?

Answer 18

Mass
Velocity

Question 19

What are wires in plugs made from?

Answer 19

Copper
It is a great conductor, flexible and reasonably priced

Question 20

What appliances need to be earthed?

Answer 20

Metal cased

Question 21

How does a circuit breaker work?

Answer 21

A strong loaded plush switch is held closed by a spring loaded iron bolt
An electromagnet can pulls this way from a switch
If there is too much current the bold pulls towards itself opening the switch

Question 22

What are the advantages of a circuit breaker?

Answer 22

Respond quicker
More reliable
More sensitive
Can be reset

Question 23

What is current?

Answer 23

Flow of charge of electrons

Question 24

What is voltage?

Answer 24

The force that moves the current around the circuit

Question 25

What is the frequency of a mains supply?

Answer 25

50hz

Question 26

What is the mains value in Britain?

Answer 26

230 volts

Question 27

What is the symbol for a variable resistor?

Answer 27

A rectangle with an arrow through it

Question 28

What is a thermistor symbol?

Answer 28

A rectangle with a diagonal line with a straight bit on

Question 29

What is the current like in series?

Answer 29

The same everywhere

Question 30

What is voltage like in series?

Answer 30

Shared between components

Question 31

What is the resistance in a series?

Answer 31

Add all togehter

Question 32

What is the voltage in parallel?

Answer 32

Same along all branches

Question 33

What is current like in parallel?

Answer 33

Splits along branches

Question 34

What is a thermistor?

Answer 34

A temperature dependant resistor Hot - resistance drops Cold - reistance increases

Question 35

How do you make a magnet?

Answer 35

Hold a nail and hit with a hammer Or Put in a very strong magnetic field Or Stroke the magnet along the material

Question 36

What is a split ring commutator?

Answer 36

A way of swapping the contacts every half term to keep the motor rotating in the same direction

Question 37

What is flemmings left hand rule?

Answer 37

Thumb - direction of force First finger - magnetic field Third finger - direction of current

Question 38

What is total internal reflection?

Answer 38

If the angle of incidence is greater than the critical angle than the ray is completely reflected

Question 39

What are some uses of total internal reflection?

Answer 39

Endoscope Periscopes Fibre optic broadband

Question 40

What is a wavefront?

Answer 40

If two or more waves are moving together

Question 41

What is the Doppler effect?

Answer 41

Waves produced by a source moving towards or away from an observer will appear to have different wavelength

Question 42

What colours are refracted the most and least?

Answer 42

Most - violet Least - red

Question 43

What is latent heat?

Answer 43

Hear energy that goes into changing the state of a substance

Question 44

What is latent heat of fusion?

Answer 44

Ice melts to form water

Question 45

What is laten heat of vapourisation?

Answer 45

Water evaporates to form water vapour

Question 46

How do you record specific heat capacity?

Answer 46

Place an electrical immersion heater into a weighed metal block Connect in series with an ammeter and parallel with a voltmeter Place the thermometer in Insulate the block wiht cotton wool Record the temperature Turn on the heater for 10 mins Then turn off Record highest temp

Question 47

What is a galaxy?

Answer 47

Collection of stars

Question 48

What is centripetal force?

Answer 48

Circular motion requires it Acts on the centre of a circle

Question 49

What are the 2 types of satellites?

Answer 49

Artificial Natural