Physics

Question 1

An instrument used for measuring current in a circuit.

Answer 1

Ammeter

Question 2

The unit used for measuring current.

Answer 2

Amperes

Question 3

The size or height of a sound vibration

Answer 3

Amplitude - bigger amplitude means a louder sound

Question 4

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

Answer 4

Current

Question 5

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

Answer 5

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

Question 6

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

Answer 6

Density

Question 7

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

Answer 7

Diffusion

Question 8

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

Answer 8

Diode

Question 9

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

Answer 9

Dispersion

Question 10

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

Answer 10

Eclipse of the sun

Question 11

A push or pull. Measured in Newtons

Answer 11

A force

Question 12

The three things that a force can do

Answer 12

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

Question 13

Two forces which cause an object to slow down

Answer 13

Air resistance and friction.

Question 14

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

Answer 14

fuse

Question 15

Stored energy in objects which are high up

Answer 15

Gravitiatioal potential energy

Question 16

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

Answer 16

Gravity

Question 17

Any material that does not allow heat to pass through.

Answer 17

Thermal insulator

Question 18

Any material that will allow electricity to pass through.

Answer 18

Electrical conductor

Question 19

The metric unit for energy.

Answer 19

Joules

Question 20

The metric unit for mass

Answer 20

kilogram or gram

Question 21

The energy in a moving object.

Answer 21

Kinetic energy

Question 22

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

Answer 22

LDR - light dependent resistor

Question 23

Used to measure the volume of liquids

Answer 23

Measuring cylinders

Question 24

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

Answer 24

Moon

Question 25

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

Answer 25

Opaque

Question 26

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

Answer 26

Parallel

Question 27

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

Answer 27

Permeable. E.g chalk and limestone are permeable.

Question 28

Describes how high or low a sound is

Answer 28

Pitch

Question 29

A kind of switch that can be closed using a magnet

Answer 29

Reed switch

Question 30

When light bounces off a smooth surface

Answer 30

Reflection

Question 31

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

Answer 31

Refraction

Question 32

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

Answer 32

Resistance

Question 33

Is the moon a satellite, planet or star?

Answer 33

Satellite

Question 34

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

Answer 34

Spectrum

Question 35

Calculated by distance divided by time

Answer 35

Speed

Question 36

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

Answer 36

Star (The Sun is a star)

Question 37

Form of energy in a stretched elastic band or compressed spring

Answer 37

Strain energy (elastic energy)

Question 38

Measurement of how hot or cold something is

Answer 38

Temperature

Question 39

Instrument used to measure temperature

Answer 39

Thermometer

Question 40

Units that we normally use to measure temperature

Answer 40

Celcius (^oC)

Question 41

The unit we normally use to measure pressure

Answer 41

Newtons per cm squared (N/cm²)

Question 42

unit of density

Answer 42

g/cm³ or kg/m^{3 (}Look carefully at units used in the question)

Question 44

The number of sound vibrations per second.

Answer 44

Pitch, measured in hertz

Question 45

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

Answer 45

Chemical energy

Question 46

A battery in a circuit converts chemical energy in to ?

Answer 46

Electrical energy