@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

@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

@If you placed the ends of two bar magnets together, which of these combinations would repel each other?
North and north
North and south
South and north

@Which one of the following is a vector?
Gravity
Potential energy
Mass

@Ice is taken from a fridge and heated. Its temperature is constantly checked. What do the readings show?
The temperature remains around 0C until all the ice is melted, and then rises
The temperature immediately, and steadily, rises
The temperature quickly rises to 4C and then remains constant until all the ice has melted

@Gases expand when heated:
More than solids or liquids
Same as solids or liquids
Less than solids or liquids

@Since cork floats on water, which one of these statements is correct?
Density of cork is less than the density of water
Density of cork is greater than the density of water
The densities of cork and water must be exactly equal

@A beaker holds 50cm of water. It is heated until all the water has boiled away. What is the volume of steam produced?
Much more than 50cm
Slightly more than 50cm
50cm, as before

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

@What unit is used to measure the wavelength of a wave?
Metre
Hertz
Metres per second

@Why does an object appear black in white light?
Because it absorbs all light
Because it reflects all light
Because it only reflects red and blue

@Which one of the following is a correct statement for e.m waves?
They all travel through space
None of them can travel through space
Some can travel a little way through space

@A shadow will have an umbra and penumbra if:
An extended source is used
A point source is used
A large object is used

@Which lens is a converging lens?
#lens2
Lens y
Lens x
Lens z

@What is the unit of velocity of a sound wave?
Metres per second
Hertz
Metre

@Two resistors, 500 and 1000, are connected in series. The p.d across the 1000 ohm compared to the 500 ohm resistor will be:
Double
Half
The same

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

@Charge is measured in:
Coulombs
Volts
Amperes

@Which of these devices could you use to detect charge?
Electroscope
Joule meter
Wheatstone bridge

@The oscilloscope control that causes the trace to move from left to right is:
Time base
X-gain
Trigger

@What units are work measured in?
Joules
Watts
Newtons

@What is meant by the term 'terminal velocity'?
an object accelerates up to a certain velocity, and then no more
An objects acceleration continues to increase at a fixed rate
The acceleration of an object falls by a constant amount

@On Earth, the gravitational field strength is 10 N/Kg which means:
Each Kg has a weight of 10 Newtons
One Newtons weighs 10 Kg
One Kg has a mass of 10 Newtons

@Placing the north poles of two bar magnets together causes them to push away from each other. The correct name for this 'pushing' is:
Repel
React
Restrict

@Camels have large flat feet. Why?
So they do not sink into the sand
To improve heat loss
To increase friction and get a better grip
