OCR GCSE Physics B (21st Century) Paper 1 June 2022 question paper

Layla uses a motor to lift a weight, as shown in the diagram. The motor is powered by a battery.

What is the energy store of the battery?

Tick (✓) one box.

How is energy transferred from the battery to the motor?

Tick (✓) one box.

Layla measures the power of the motor as 13 W.

It takes 3.0 s to lift the weight.

Calculate the energy transferred by the motor.

Use the equation: energy transferred = power × time

Layla repeats the experiment.

She measures the power three times in total.

Her three measurements are: 13 W 17 W 12 W

Calculate the mean (average) power.

Layla’s teacher says that the motor transfers too much energy to thermal energy.

How could Layla reduce this unwanted energy transfer?

Tick (✓) one box.

Amir is studying the structure of atoms. Fig. 2.1 shows a model of an atom.

Use a word from the list to complete the sentence.

electrons neutrons protons

The atom has a positive nucleus surrounded by negative........

Use words from this list to complete the sentence.

charge mass nucleus space volume

Almost all of the........ of the atom is in the........

What is the typical size of an atom?

Tick (✓) one box.

Amir researches the hydrogen atom. He finds diagrams of three different hydrogen atoms. The diagrams are shown in Fig. 2.2.

Which statement could be used to describe these atoms?

Tick (✓) one box.

One of the atoms is unstable.

Which statement can be used to describe this atom?

Tick (✓) one box.

Beth investigates the pressure and volume of gases.

She uses the equipment shown in the diagram.

The pressure of the gas is increased by using a greater weight of books.

The pressure of the gas causes forces against the inside surface of the syringe.

Which statement correctly describes the direction of these forces?

Tick (✓) one box.

Beth wants to increase the force from the books by 24 N.

Calculate the mass of a book with a weight of 24 N.

Gravitational field strength = 10 N / kg

Use the equation: mass = weight ÷ gravitational field strength

The surface area of the top of the syringe is 0.0012 m². (ii)

Beth adds a book with a weight of 24 N.

Calculate the increase in pressure.

Use the equation: pressure = force normal to a surface ÷ area of that surface

The temperature of the gas remains constant.

Beth observes that as the pressure increases, volume decreases.

Which statements correctly explain why this happens?

Tick (✓) two boxes.

Kai investigates how the strength of a magnet depends on distance from the magnet.

He uses the equipment shown in the diagram. The distance between the magnet and the paperclips is varied by using different numbers of sheets of paper.

Complete the following sentences about the paperclips.

Use words from the list.

copper hard induced iron permanent zinc

When the magnet is close to the paperclips they become........ magnets.

They must be made of a magnetic material, such as........

Describe the difference between a permanent and an induced magnet.

Kai’s results are shown in the table.

Kai evaluates the quality of his data in the table.

Explain why Kai is correct.

Describe the pattern in Kai’s data.

Kai decides to investigate the strength of electromagnets.

He builds an electromagnet by wrapping a coil of wire around an iron core.

How could Kai increase the strength of his electromagnet?

Tick (✓) one box.

Eve investigates how white light reflects from a mirror.

Fig. 5.1 shows her equipment.

What is the name of the dotted line P in Fig. 5.1 ?

Tick (✓) one box.

Eve records the position of the ray by marking crosses on the paper and then joining them together.

Describe two things that Eve should do to record the position as accurately as possible.

Fig. 5.2 shows the expected result from Eve’s investigation.

Write the letter (A, B, C or D) of the correct diagram........

Eve wants to extend her experiment.

Suggest how Eve could extend her experiment to investigate just one wavelength of light.

Ben uses a battery-powered shaver.

The shaver uses an electric motor to move the blades.

A circuit diagram for the shaver is shown below.

When the shaver is switched on, energy is transferred.

Which two statements correctly describe changes in the energy stores when the shaver is switched on?

Tick (✓) two boxes.

The potential difference of the battery is 1.2 V.

Each time Ben uses the shaver, 180 C of charge flows.

Calculate the energy transferred each time he uses the shaver.

Use the equation: energy transferred = charge flow × potential difference

The power of the shaver is 1.1 W.

Calculate the current flowing through the shaver.

Use the equation: power = potential difference × current

Give your answer to 2 significant figures.

The size of force P is 30 N.

The distance from the pivot to force P is 6.0 cm.

Calculate the moment of the force.

Use the equation: moment of a force = force × distance (normal to direction of the force)

The force Q is caused by the metal cylinder pushing against the lever.

Which statement describes how to increase Q without increasing P ?

Tick (✓) one box.

The lever exerts a force R on the metal cylinder. The force R and force Q are an interaction pair.

Compare and contrast force P to the force Q.

Explain how the lever returns to its original position when P is removed.

Jack is a sprinter. He uses a parachute when he trains, as shown in Fig. 8.1.

Name the upwards and downwards forces acting on Jack.

Upwards force........

Downwards force........

Jack’s mass is 60 kg.

Calculate Jack’s acceleration.

Use information from Fig. 8.2.

Use the equation: acceleration = force ÷ mass

Acceleration =........ m / s²

Jack wants to buy a new training parachute. He wants a parachute that will give the biggest possible air resistance.

The table shows information about three parachutes.

Suggest which parachute Jack should buy.

Jane investigates how the resistance of a wire depends on its diameter.

She uses the circuit shown in the diagram to measure the resistance of wires of different diameters.

One control variable in this experiment is the temperature of the wire.

Suggest how to keep the temperature of the wire constant.

State two other control variables for this experiment.

Jane makes the following measurements for one wire.

reading on voltmeter = 0.55 V reading on ammeter = 2.5 A

Use the Data Sheet. Calculate the resistance of the wire.

The table and graph show Jane’s results.

Complete the graph by plotting the missing result from the table and draw a line of best

fit.

Write a conclusion for Jane’s investigation.

Different types of wave can be used for communications.

Fifty years ago, microwaves were used for long distance communications. Microwaves travel through the air between microwave aerials.

Now, light waves travelling along optical fibres are normally used instead.

State one similarity and one difference between microwaves and light waves.

Similarity........

Difference........

The table compares the speed of the two methods of communication.

The distance between two locations is 90 km.

Use the Data Sheet.

Calculate the time taken for a light wave to travel this distance through an optical fibre.

Li thinks about which method is better.

Evaluate Li’s statement.

Nina investigates how the resistance of a thermistor depends on its temperature.

She controls the temperature of the thermistor by placing it in a beaker of water at different temperatures.

Fig. 11.1 shows part of her circuit diagram.

Complete Fig. 11.1 to include a thermistor correctly connected to the circuit.

Table 11.1 shows her data.

Suggest how she could make water with a temperature of about 50 °C.

Table 11.2 shows her data including the measurement at 50 °C.

How will the new data affect Nina’s confidence in her hypothesis?

Explain your answer.

Tick (✓) one box.

Nina made 7 more measurements at different temperatures.

All her data is plotted in Fig. 11.2.

Describe the trend shown in Fig. 11.2.

Jamal, Sara and Jack are playing rounders.

Rounders is a game played with a bat and ball. Fig. 12.1 shows the layout of the pitch. The bowler stands at X and throws the ball towards the batter at Y.

The batter hits the ball and then tries to run to third base, from Y to Z.

Jamal hits the ball and runs along the path from Y to Z shown in Fig. 12.1.

Explain why Sara is correct. Use information from Fig. 12.1 in your answer.

Sara and Jack try to estimate how quickly Jamal speeded up.

Which is the better estimate? Explain your answer.

Tick (✓) one box.

Use either estimate to calculate Jamal’s acceleration.

Use the Data Sheet.

Acceleration =........ m / s²

Cancer can be treated using radiation. This is called radiotherapy.

The diagram shows one way to use gamma rays to treat cancer.

Describe why gamma rays can be used to treat cancer using the method shown in the diagram.

Ben’s cancer is treated using gamma rays.

Explain why Ben is wrong.

X-rays can also be used for radiotherapy.

X-rays are produced electrically using a machine.

Suggest an advantage of treating cancer using X-rays instead of gamma rays.