3 marksFoundation6.4.2.1 Radioactive decay and nuclear radiation
Alpha, beta and gamma are three types of nuclear radiation.
.1Which type of radiation is the most penetrating?
[1 mark] .2Which type of radiation is made of two protons and two neutrons?
[1 mark] .3Give a material that stops beta radiation.
[1 mark] 4 marksFoundation6.1.3 National and global energy resources
Electricity can be generated from many different energy resources.
.1Which two resources are renewable? Choose two.
[2 marks] .2Give the meaning of the word renewable.
[1 mark] .3Give one disadvantage of generating electricity from wind turbines.
[1 mark] 4 marksFoundation6.3.2.2 Temperature changes in a system and specific heat capacity6.3.2.1 Internal energy
A kettle heats 0.80 kg of water from 20 °C to 100 °C.
The specific heat capacity of water is 4200 J/kg °C.
.1Calculate the energy transferred to the water.
[3 marks] .2What is the internal energy of the water?
[1 mark] 5 marksFoundation6.2.1.1 Standard circuit diagram symbols6.2.1.2 Electrical charge and current
The diagram shows a circuit.
.1Name component X.
[1 mark] .2The lamp is off. Explain why the lamp lights when the switch is closed.
[2 marks] .3When the switch is closed, the reading on X is 0.20 A.
Calculate the charge that flows through the lamp in 60 s.
[2 marks] 3 marksFoundation6.2.3.2 Mains electricity6.2.3.1 Direct and alternating potential difference
A kettle is connected to the mains supply with a three-core cable.
.1What colour is the insulation on the live wire?
[1 mark] .2Give the frequency of the UK mains supply.
[1 mark] .3Give the name of the wire that is a safety wire and carries a current only if there is a fault.
[1 mark] 