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Science 2 > Physics > Flashcards

Physics Flashcards

Electricity

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1
Q

An instrument used for measuring current in a circuit.

A

Ammeter

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2
Q

The unit used for measuring current.

A

Amperes

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3
Q

The size or height of a sound vibration

A

Amplitude - bigger amplitude means a louder sound

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4
Q

This is the flow of electricity in a circuit. It is measured in amperes

A

Current

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5
Q

The time it takes for a planet to revolve once on its axis

A

I day (24 hours on earth, 9hrs 56mins on Jupiter)

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6
Q

The mass of 1cm3 of an object. Found by dividing mass by volume.

A

Density

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7
Q

Movement of tiny particles like molecules or atoms which causes them to mix together or move across membranes

A

Diffusion

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8
Q

An electrical component that only allows the current to flow in one direction

A

Diode

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9
Q

Name of the process when white light is split up by a prism.

A

Dispersion

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10
Q

When the moon comes between the sun and the Earth causing the shadow of the moon to fall on the Earth

A

Eclipse of the sun

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11
Q

A push or pull. Measured in Newtons

A

A force

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12
Q

The three things that a force can do

A

Speed things up, slow things down and cause things to change shape.

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13
Q

Two forces which cause an object to slow down

A

Air resistance and friction.

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14
Q

A thin length of wire which is designed to melt when the current flowing through it is too high.

A

fuse

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15
Q

Stored energy in objects which are high up

A

Gravitiatioal potential energy

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16
Q

The force that pulls objects down towards the centre of the Earth

A

Gravity

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17
Q

Any material that does not allow heat to pass through.

A

Thermal insulator

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18
Q

Any material that will allow electricity to pass through.

A

Electrical conductor

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19
Q

The metric unit for energy.

A

Joules

20
Q

The metric unit for mass

A

kilogram or gram

21
Q

The energy in a moving object.

A

Kinetic energy

22
Q

A component with a high resistance in the dark and a low resistance in the light

A

LDR - light dependent resistor

23
Q

Used to measure the volume of liquids

A

Measuring cylinders

24
Q

The natural satellite of Earth which orbits the Earth every 28 days

A

Moon

25
Q

Term used to describe any object that doesn’t allow light to pass through

A

Opaque

26
Q

Type of circuit where the current divides and follows more than one path

A

Parallel

27
Q

Word the describes a substance which allows water to pass through it.

A

Permeable. E.g chalk and limestone are permeable.

28
Q

Describes how high or low a sound is

A

Pitch

29
Q

A kind of switch that can be closed using a magnet

A

Reed switch

30
Q

When light bounces off a smooth surface

A

Reflection

31
Q

Name given to the process where light changes direction (bends) due to it changing speed.

A

Refraction

32
Q

The property of a component or conductor which reduces the current flowing through it.

A

Resistance

33
Q

Is the moon a satellite, planet or star?

A

Satellite

34
Q

The name given to the rainbow of colours produced by a prism

A

Spectrum

35
Q

Calculated by distance divided by time

A

Speed

36
Q

Object at the centre of the solar system that provides the energy

A

Star (The Sun is a star)

37
Q

Form of energy in a stretched elastic band or compressed spring

A

Strain energy (elastic energy)

38
Q

Measurement of how hot or cold something is

A

Temperature

39
Q

Instrument used to measure temperature

A

Thermometer

40
Q

Units that we normally use to measure temperature

A

Celcius (oC)

41
Q

The unit we normally use to measure pressure

A

Newtons per cm squared (N/cm2)

42
Q

unit of density

A

g/cm3 or kg/m3 (Look carefully at units used in the question)

43
Q
A
44
Q

The number of sound vibrations per second.

A

Pitch, measured in hertz

45
Q

Form of energy stored in a battery, firework rocket, food or fuel e.g. coal.

A

Chemical energy

46
Q

A battery in a circuit converts chemical energy in to ?

A

Electrical energy

47
Q
A

Science 2 (16 decks)

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