AQA GCSE Trilogy Physics Paper 1 Foundation June 2018 question paper 8464/P/1F

There are many different energy resources.

Which two energy resources are renewable?

Tick two boxes.

Some non-renewable energy resources are more reliable than others.

Which statement correctly describes a reliable resource?

Tick one box.

Figure 1 shows a wind farm.

The total power output of the wind farm is 19.6 MW

All of the wind turbines have the same power output.

What is the power output of one wind turbine?

Tick one box.

Give two reasons why people might not like having wind turbines near their homes.

Figure 2 shows the electricity generated by different energy resources in the UK.

The total amount of electricity generated was the same in 2014 and in 2015

There are changes in the amounts of different energy resources used between 2014 and 2015

Explain the environmental impacts of the changes.

Figure 3 shows a mobile phone being recharged by a portable power source.

Why does the battery in the phone need recharging?

Tick one box.

The power source provides a current of 1.86 A at a potential difference of 3.90 V

Calculate the power of the power source.

Use the equation:

power = potential difference × current

Choose the correct unit from the box.

A student needs a new power source.

Figure 4 shows three different sized power sources.

Table 1 gives data about the different power sources.

The student chose the large power source.

Suggest why the student chose the large power source.

Figure 5 shows a girl skateboarding on a semi-circular ramp.

The girl has a mass of 50 kg

Calculate the gravitational potential energy (g.p.e.) of the girl at the top of the ramp.

Use the equation:

g.p.e. = mass × gravitational field strength × height

gravitational field strength = 9.8 N/kg

The girl has a speed of 7 m/s at the bottom of the ramp.

Calculate the kinetic energy of the girl at the bottom of the ramp.

Use the equation:

kinetic energy = 0.5 × mass × (speed)²

Not all of the g.p.e. has been transferred to kinetic energy.

Which two statements explain why?

Tick two boxes.

Explain how lubricating the wheels of the skateboard can increase the speed of the girl.

Use ideas about energy in your explanation.

Some ceiling lights in the home are connected to the mains by a two-core cable.

Figure 6 shows a ceiling light.

Suggest why some ceiling lights do not have an earth wire.

Write down the equation that links charge flow, current and time.

There is a current of 2.95 A in one of the copper wires for 60 seconds.

Calculate the charge flow through the wire.

Use your equation from question 04.2

Figure 7 shows a current potential difference graph for a piece of copper wire.

Draw another line on Figure 7 for a wire with a different resistance.

Some fuses have a thin piece of copper that melts if the current is too large.

Draw the circuit symbol for a fuse.

Describe how the movement of the copper particles in the wire changes when copper melts.

Old copper wires are melted when they are recycled.

Calculate the energy needed to melt 500 kg of copper at its melting point.

Specific latent heat of fusion of copper = 200 kJ/kg

Use the Physics Equations Sheet.

Radioactive nuclei can emit alpha, beta or gamma radiation.

Which type of radiation is the most penetrating?

Tick one box.

Which type of radiation is the most ionising?

Tick one box.

Which type of radiation has the longest range in air?

Tick one box.

When radioactive isotopes in the Earth’s crust decay they release energy.

The decay causes the heating of rocks in the crust.

Figure 8 shows the decay of uranium–238 (U–238) into thorium–234 (Th–234).

Figure 8

Complete Table 2 to show the number of neutrons and protons in the nuclei.

Geothermal power stations pump water through heated rocks.

The temperature of the water increases from 20 °C to its boiling point of 100 °C

Calculate the change in thermal energy when the mass of water heated is 150 kg

Specific heat capacity = 4 200 J/kg °C

Use the Physics Equations Sheet.

Figure 9 shows two models of the atom.

Write the labels on Figure 9

Choose the answers from the box.

Explain why the total positive charge in every atom of an element is always the same.

The results from the alpha particle scattering experiment led to the nuclear model.

Alpha particles were fired at a thin film of gold at a speed of 7% of the speed of light.

Determine the speed of the alpha particles.

Speed of light = 300 000 000 m/s

Figure 10 shows two atoms represented as solid spheres.

A hydrogen atom has a radius of 2.5 × 10^–11 m

Determine the radius of a magnesium atom.

Use measurements from Figure 10

A student wanted to determine the density of the irregular shaped object shown in Figure 11

Plan an experiment that would allow the student to determine the density of the object.

Another student did a similar experiment.

He determined the density of five common plastic materials.

Table 3 shows the results.

Figure 12 shows the results plotted in a bar chart.

Complete Figure 12

You should:

• Write the correct scale on the y-axis.

• Draw the bars for polyester, polystyrene and PVC.

The student is given a piece of a different plastic material.

The student determined the density of the material three times.

Table 4 shows the results.

Determine the uncertainty in the student’s results.