Studied by 2 people

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Hint

1

velocity has direction

What is the difference between speed and velocity

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2

average speed=distance moved/time taken

what is the equation relating average speed, time taken and distance moved?

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3

how quick velocity is changing

what is acceleration?

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4

acceleration=change in velocity/time taken

what is the equation relating acceleration, change in velocity and time taken?

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5

speed

on a distance-time graph what does the gradient symbolise?

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6

it's stopped

on a distance-time graph what does it mean when there's a flat section?

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7

there's acceleration or deceleration

on a distance-time graph what does it mean when there are curves?

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8

acceleration

on a velocity-time graph what does the gradient symbolise?

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9

steady speed

on a velocity-time graph what does it mean when there is a flat section?

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10

by working out the area under the line (with limits if trying to find the distance travelled between certain time)

on a velocity-time graph how can you find distance travelled in a certain time?

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11

gravity

what is weight caused by?

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12

the force of attraction between all masses

what is gravity?

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13

false

mass includes the force of gravity. true or false?

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14

weight=mass x gravitational field strength

give the equation relating weight, gravitational field strength and mass

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15

slows things down

what does friction do?

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16

gravity

what is the accelerating force that acts on all falling objects?

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17

resistance force=accelerating force

what is terminal velocity?

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18

balanced forces means no change in velocity

what is newton's first law?

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19

an unbalanced force means there will be acceleration

what is newton's second law?

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20

force=mass x acceleration

give the equation relating force, acceleration and mass

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21

that if object A exerts a force on object B, object B with exert the same but opposite force on object A

what is newton's third law? (use object A and object B)

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22

a quantity which has size

what is a scalar quantity?

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23

a quantity which has size and direction

what is a vector quantity?

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24

force, velocity, displacement, acceleration, momentum

which ones of these are vector quantities?

mass -force -velocity -temperature -time -distance -displacement -acceleration -momentum

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25

mass, temperature, time, distance

which ones of these are scalar quantities

mass -force -velocity -temperature -time -distance -displacement -acceleration -momentum

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26

momentum=mass x velocity

give the equation relating momentum, velocity and mass

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27

when no external forces act

when is momentum conserved?

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28

force

what causes changes in momentum?

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29

force acting=change in momentum/time taken for change to happen

give the equation relating force acting, change in momentum and time taken for change to happen

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30

they increase the time for the car to stop

how do crumple zones (google it if you don't know) help decrease the impact of a crash on a passenger?

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31

they increase the time for the passenger to stop

how to seat belts help decrease the impact of a crash on a passenger?

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32

they slow the passenger down

how to air bags help decrease the impact of a crash on a passenger?

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33

the turning effect of a force

what is moment?

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34

moment=force x distance

give the equation relating moment, force and distance

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35

where the weight of the body acts

what is the centre of gravity of an object?

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36

by looking at the point where lines of symmetry join

how can you find the centre of gravity in simple shapes? eg. a square

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37

that extension is proportional to force

what does hooke's law say?

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38

when the force is great enough

when does hooke's law stop?

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39

the material will be elastically deformed

what happens when you increase a force past the elastic limit?

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40

brown

what is the colour of a live wire?

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41

green and yellow

what is the colour of an earth wire?

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42

blue

what is the colour of a neutral wire?

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43

live wire

what is the 1st pin on a plug?

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44

earth wire

what is the 2nd pin on a plug?

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45

neutral wire

what is the 3rd pin on a plug?

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46

brass

what are the pins in a plug made of?

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47

copper

what are the cables made of in a plug?

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48

plastic

what is the case, cable grip and cable insulation made of?

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49

0

what is the voltage of a neutral wire?

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50

when the appliance has metal casing and no metal parts showing

what is meant by the term double insulated?

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51

it blows (and the circuit breaks)

what happens to a fuse when the current is too high?

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52

takes the current to the earth

what does an earth wire do?

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53

current decreases

what happens to current when the resistance increases?

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54

rate of transfer of energy

what is electrical power?

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55

watts

what is power measured in?

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56

electrical power=current x voltage

give the equation linking electrical power, current and voltage

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57

energy transferred=current x voltage x time

give the equation linking energy transferred, time, current and voltage

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58

rate of flow of charge

what is current?

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59

anything in the circuit that slows the flow down

what is resistance?

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60

ohm

what is the unit of resistance?

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61

it increases

what happens to current when the voltage increases

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62

ammeter

what is this symbol?

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63

cell

what is this symbol?

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64

battery

what is this symbol?

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65

power supply, DC

what is this symbol? what type of current is this?

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66

power supply, AC

what is this symbol? what type of current is this?

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67

earth

what is this symbol?

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68

fuse

what is this symbol?

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69

transformer

what is this symbol?

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70

filament lamp

what is this symbol?

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71

LED

what is this symbol?

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72

loudspeaker

what is this symbol?

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73

microphone

what is this symbol?

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74

electric bell

what is this symbol?

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75

motor

what is this symbol?

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76

fixed resistor

what is this symbol?

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77

variable resistor

what is this symbol?

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78

diode

what is this symbol?

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79

LDR

what is this symbol?

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80

thermistor

what is this symbol?

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81

AC

what type of current is in a mains supply?

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82

DC

what type of current is in a battery supply?

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83

alternating current (current is always changing direction)

what is AC?

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84

direct current (current always goes in the same direction)

what is DC?

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85

voltage=current x resistance

give the equation linking voltage, current and resistance

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86

filament lamp

what component is this for?

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87

wire

what component is this for?

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88

resistors

what component is this for?

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89

a diode

what component is this for?

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90

false

LDR. in bright light the resistance increases. true or false?

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91

in burglar detectors

give an example of where an LDR can be used

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92

temperature

what is a thermistor dependent of?

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93

true

thermistor. in hot conditions, the resistance drops. true or false?

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94

car engine temperature sensors

where can a thermistor be used?

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95

true

in a series circuit if one component breaks down, the whole circuit breaks down. true or false?

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96

false

in a series circuit all of the components have different ammeter readings. true or false?

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97

parallel

is a voltmeter placed in parallel or in series?

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98

Q

what is the symbol of charge?

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99

charge=current x time

give the equation linking charge, current and time

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100

transfers energy

when charge drops through a voltage it...

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