@In air beta particles have a range of about:
1m
1mm
1cm

@Red and Blue light mixed together makes:
Magenta
Indigo
Cyan

@Which one of the following statements about the wavelength of an e.m wave is incorrect
It's measured from the top of one wave to the bottom of the next
It's measured from the top of one wave to the top of the next
It's from the middle of one wave to the middle of the next

@The Sun causes sharp shadows because:
Its light is parallel
Its light is diverging
Its light is converging

@An object, viewed through one of these lenses, would look smaller. Which lens?
#lens2
Lens z
Lens y
Lens x

@What is the unit of frequency?
Hertz
Metre
Metres per second

@A transformers secondary coil has 1A and 120V. If the primary coil has 240V, what is the current?
0.5A
1A
10A

@Some substances are insulators because:
they do not have any free moving electrons
they don't have any electrons
electrons are easily lost by the substances

@If you want more current to flow in an electrical circuit, then you must:
Reduce the resistance
Increase the resistance
Keep changing the resistance

@Another name for beams of electrons is:
Cathode rays
Microwaves
X-rays

@What units are work measured in?
Joules
Watts
Newtons

@Acceleration is a vector quantity because:
it depends on the direction you are going
the size (value) of the acceleration is important
because its units are m/s

@A 5 N weight makes a spring stretch by 25cm. To make the spring stretch by just 5cm the weight you would use would be:
#for1
1 Newton
25 Newtons
5 Newtons

@Alpha particles are:
Atomic nuclei
Electrons
Electromagnetic waves

@Which of these velocity time graphs was produced by an object that was slowing down?
#mot2
Graph y
Graph x
Graph z

@The diagram shows a piston in a container. If the substance inside the container was a liquid then the piston:
#pre1
Would not move whatever force was applied
Could move down easily
Would move easily at first, but then become difficult

@The units of a turning force are:
Nm
Nm
Pa

@Which one of the following is a scalar?
Power
Velocity
Acceleration

@When you put your hands in front of a fire they feel warm because of:
Radiation
Conduction
Convection

@If boiling water is poured onto a frozen windscreen in winter it shatters. This is because:
The glass expands very rapidly
The glass contracts quickly
The ice melts, turning into steam


@The temperatures inside two rooms are 12C and 20C. From this, what can be said about the speeds of the air molecules in each room?
They travel faster in the 20C room
There is not enough information to make a comment
Since both contain air molecules then they must be travelling at the same speed

@If the following were allowed to pass near a charged gold leaf electroscope, which would produce the greatest effect?
Alpha radiation
Beta radiation
Gamma radiation

@Which unit is used to measure potential difference?
Volt
Ampere
Watt

@What three colours, when mixed together, produce white?
Red, green and blue
Green, yellow and cyan
Red, green and yellow

@Clear glass is:
Transparent
Opaque
Translucent
