9I Quick Quiz
1 Which of these is not a form of energy?
A kinetic B petrol
C light D sound
2 Which of these has the most gravitational potential energy?
A a parachutist standing on a runway
B a parachutist going into a plane
C a parachutist jumping out of a plane
D a parachutist after landing
3 What are the energy changes in a candle?
A heat to light
B heat to sound
C light to heat
D chemical to heat and light
4 A machine is something which:
A changes energy.
B creates energy.
C destroys energy.
D makes things.
1 The units for voltage are:
2 Voltage is measured:
A using a voltmeter in the circuit like this.
B using a voltmeter in the circuit like this.
C using an ammeter in the circuit like this.
D using an ammeter in the circuit like this.
3 Voltage is:
A another name for current.
B a way of counting how many cells there are in a circuit.
C a way of saying how much energy the electricity is carrying.
D something that makes it difficult for electricity to flow.
4 Which statement is not true for a series circuit?
A The voltage is always the same for all the components.
B The voltage across each component depends on how much energy it uses.
C The voltage across all the components adds up to the voltage across the cell.
D The voltage can be measured using a voltmeter.
1 Where is electricity generated?
A in the home B in a power station
C in the mains D in the wires
2 The energy in electricity comes from:
A energy stored in fuels, winds or water.
B energy stored in food.
C energy in the wires.
D energy in the switches.
3 A cell is:
A a jail.
B a store of chemical energy.
C mains electricity.
D a power pack.
4 High voltages are dangerous because:
A they cost a lot to produce.
B they do not transfer much energy.
C they can transfer a lot of energy.
D they are poisonous.
1 Which statement is true?
A You always put more energy into a machine than you get out.
B You always get more energy out of a machine than you put in.
C The amount of energy you get out of a machine is always exactly the same as the energy you put in.
D The amount of energy you get out of a machine does not depend on the amount you put in.
2 Which is the correct energy flow diagram for a television?
3 Which forms of energy are often produced as wasted energy?
A heat and light
B heat and sound
C sound and light
D sound and kinetic
4 An efficient machine:
A does not waste much energy.
B wastes a lot of energy.
C is more expensive to run than an inefficient machine.
D is more expensive to buy than an inefficient machine.