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Physics Flashcards

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Physics 101 flashcards AP® Physics flashcards
1
Q

Current is…

A

a flow of charged electrons

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2
Q

Current is measured using an…

A

ammeter

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3
Q

Current is measured in..

A

amperes (A)

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4
Q

The amount at the end of a circuit is…

A

the same as the amount at the start

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5
Q

In series circuits..

A

the current is always the same

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6
Q

In parallel circuits..

A

the current splits at a junction

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7
Q

When more components are connected in a parallel circuit..

A

the resistance decrease because there are more paths for the current to pass through

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8
Q

Components..

A

resist the electrical current

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9
Q

Resistance is…

A

greater with more components

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10
Q

Shorter thicker wires have..

A

less resistance than long thin ones

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11
Q

Insulators have

A

high resistance

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12
Q

Energy..

A

causes things to happen

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13
Q

Energy is measured in..

A

Joules (J)

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14
Q

There are nine types of energy..

A

see next q

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15
Q

1

A

kinetic

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16
Q

2

A

thermal

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17
Q

3

A

light

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18
Q

4

A

sound

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19
Q

5

A

nuclear

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20
Q

6

A

gravitational potential

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21
Q

7

A

elastic potential

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22
Q

8

A

chemical potential

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23
Q

Food contains..

A

chemical potential energy

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24
Q

We can measure the energy in food by

A

burning it and measuring the amount of heat it transfers to the water

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25
Q

The most accurate way to do this is with a..

A

calorimeter

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26
Q

Voltage is..

A

a measure of how much energy is carried around a circuit by electrons

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27
Q

Voltage is measured using a..

A

voltmeter

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28
Q

A voltmeter must be connected in..

A

parallel with the component being tested

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29
Q

Voltage is measured in..

A

volts (V)

30
Q

Energy is never..

A

created nor destroyed

31
Q

Energy can only be..

A

transferred from one type of energy to another

32
Q

Energy transfer diagrams show..

A

how energy is transferred

33
Q

Not all energy transferred is..

A

useful

34
Q

The more useful energy is transferred..

A

the more efficient the electrical is

35
Q

Power is the measure of the rate at..

A

which energy is transferred to a component

36
Q

Power is measured in..

A

Watts

37
Q

The higher the wattage..

A

the more energy is transferred

38
Q

Power=

A

current x voltage

39
Q

Conductors are..

A

materials that conduct electricity well

40
Q

A good conductor is..

A

metal

41
Q

Insulators are materials that..

A

do not conduct electricity well

42
Q

An insulator example would be..

A

plastic

43
Q

A force..

A

moves,stops,changes the direction or shape of an object

44
Q

A force is measured using a..

A

Newtonmeter

45
Q

There are 5 types of forces:

A

weight,friction,drag,magnetic and electrostatic

46
Q

Upthrust is..

A

a force that pushes an object upwards in a liquid or gas also called buoyancy

47
Q

Upthrust is equal to..

A

weight for a floating object

48
Q

Forces are shown to be..

A

equal or unequal by the size of the arrows on a force diagram

49
Q

Electromagnets are..

A

magnets that can be switched on and off

50
Q

A magnetic field is produced when..

A

an electric current flows through coils of wire

51
Q

You can change the strength of the magnet by..

A

changing the current,the core or increasing the number of coils

52
Q

You can only tell if a material is magnetic if it..

A

repels a known magnet

53
Q

The area around a magnet where the force is experienced is called a..

A

magnetic field

54
Q

The magnetic field of a bar magnet is..

A

stronger at the poles

55
Q

Magnets contain domains which..

A

line up

56
Q

You can make the domains of other materials line up with a magnet but..

A

when you take the magnet away they won’t stay lined up

57
Q

Magnetic materials include..

A

iron and steel

58
Q

Remember,not all metals are..

A

magnetic

59
Q

Energy is either..

A

renewable or non-renewable

60
Q

Renewable examples-

A

solar and wave

61
Q

Non-renewable examples-

A

coal and gas

62
Q

We need to lessen our dependence on non-renewable sources as they..

A

damage the environment and will run out

63
Q

Density=

A

Mass÷volume

64
Q

The density of an irregular shaped object can be measured by..

A

seeing how much water it displaces

65
Q

Friction is a force which…

A

opposes motion

66
Q

Friction is created whenever..

A

two touching objects or surfaces move past eachother

67
Q

Friction can occur in..

A

air, aka air resistance

68
Q

Frictional forces strength depends on:

A

the force pushing the two surfaces together and the state of the surfaces in contact

69
Q

Hooke’s law

A

There is a proportional relationship between the force of a spring and its extension.This is until the elastic limit

70
Q

Speed,distance and time

A

average speed=total distance

71
Q

In a series circuit the total resistance across all the components..

A

increases as more components are added

72
Q

It is dependent on the

A

units for distance and time

Physics (4 decks)

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