Multiple Choice Physics 1 GCSE Exam Questions Forces

Multiple Choice GCSE Exam Questions

Physics 1

Forces

Two children visit a playground. The diagram shows the two children, A and B, sitting

on a see-saw. The weight of child A and the weight of child B each create a moment

about the pivot.

Q1a What is meant by ‘the moment of a force’?

Child A now sits on a swing as shown below. The swing is not moving.

Q1b Which arrow, J, K or L, points to the centre of mass of the child?


Physics 2

The diagram shows a cyclist moving at a constant speed around a circular part of a

cycle track. There is a centripetal force acting on the cyclist when he is in the position

shown in the diagram.

Q2a When the cyclist is in the position shown in the diagram, in which direction, A, B or C, does the centripetal force act?

Q2b The cyclist moves around the circular part of the track a second time, at the same speed. This time he is closer to the outside of the bend.

What effect does this have on the centripetal force needed?

Q2c A second cyclist moves around the circular part of the track. The second cyclist has a greater mass than the first cyclist.

What effect does the greater mass have on the centripetal force needed?


Physics 3

Q3 The diagram shows two forces acting on an object.

What is the resultant force acting on the object?

An event involved paddling a homemade raft down a fast-flowing river. The rafts were

made using empty barrels.

Q4 Which two factors would most affect the raft’s stability?

Tick ( ) the two correct factors.


Physics 4

Waves

The diagram shows an electromagnetic wave.

Q1a Which arrow, K, L, M or N, shows the wavelength of the wave?

Q1b Which arrow, K, L, M or N, shows the amplitude of the wave?

The diagram shows the electromagnetic spectrum.

Q2 A laser emits visible light. Which letter, A, B or C, shows the position of visible light?

Q3 Which two of these statements are true for sound waves?

Tick ( ) two properties


Physics 5

Ultrasound can be used to produce an image of an unborn baby.

Q4a What happens to the ultrasound when it reaches the skin of an unborn baby?

Q4b Give another medical use of ultrasound.

A student investigates how light travels in a semi-circular glass block. The student shines a ray of light into a semi-circular glass block from three different directions as shown in the diagram.

Q5a Which diagram, X, Y or Z, shows total internal

reflection of the light?


Physics 6

Q5b Which angle, A, B or C, is the critical angle of the light in the block?

Q6 Visible light can be sent along optical fibres. Which diagram correctly shows the path of light along an optical fibre?

Q7 A different type of lens is a concave (diverging) lens.

Which diagram shows a concave (diverging) lens?


Physics 7

Space

Q1a A star starts as a huge cloud of dust and

[ ◾◾◾◾◾◾] particles in space.

Q1b The force of [ ◾◾◾◾◾◾] pulls the particles in

the cloud closer together.

Q1c The compressed mass of particles forms a

[ ◾◾◾◾◾◾].

Q2 Elements heavier than iron are formed in a supernova. What is a supernova?

Brown dwarf stars are small stars too cool to give out visible light. They were first discovered in 1995. Scientists think that there are millions of these stars spread throughout the Universe. Q3 Which one of the following is the most likely reason why brown dwarf stars

were not discovered before 1995?


Physics 8

Q4 Scientists have observed that the wavelengths of the light from galaxies moving away from the Earth are longer than expected.

There is a pattern linking the size of the observed increase in the wavelengths of light from a galaxy and the distance the galaxy is from the Earth.

Which one of the graphs, L, M or N, shows the correct pattern?

In the same way as the sound from the car engine changes, the light from most

galaxies also seems to have a change in observed frequency. This is called red-shift.

The diagram shows four galaxies, P, Q, R and S. The arrows show the direction the galaxies are moving relative to the Earth.

Q5a Which one of the galaxies is moving the fastest?

Q5b Which one of the galaxies will produce the biggest red-shift?

Q6 Cosmic microwave background radiation (CMBR) provides evidence for the big-bang theory. CMBR is detected coming from space.


Physics 9

Mechanics

Q1 A car has a mass of 750 kg How is the kinetic energy of the car calculated when the car is travelling at 8 m/s?

A go-kart with a new design is entered into a race. The velocity-time graph for the

go-kart, during the first 40 seconds of the race, is shown below.

Q2a Between which two points did the go-kart have the greatest acceleration?

Q2b Which one of the following statements describes the motion of the person between points D and E on the graph?


Physics 10

Electricity

The diagram shows the current-potential difference graphs for three electrical

components, A, B and C.

Q1a Which component, A, B or C is a lamp?

Q1b Which component, A, B or C is a diode?

Q2 The microwave oven draws a current of 3.3 amps from the mains electricity supply.

Which one of the following fuses should be used inside the plug?

Q3a Which one of the following is the correct circuit symbol for a LDR?

Draw a ring around your answer.

Q3b Which one of the following circuits probably includes a LDR?


Physics 11

The G-machine is rotated by an electric motor. The diagram shows a simple electric

motor.

The following statements explain how the motor creates a turning force. The

statements are in the wrong order.

M – The magnetic field interacts with the magnetic field of the permanent magnets.

N – A magnetic field is created around the coil.

O – The power supply applies a potential difference across the coil.

P – This creates a force that makes the coil spin.

Q – A current flows through the coil.

Q4 Arrange the statements in the correct order. Two of them have been done for you.

The diagram (below) shows a magnet moving into a coil of wire. This movement

causes a reading on the voltmeter.

Q5 Moving the magnet into the coil of wire causes a reading on the voltmeter

because a potential difference is [ ◾◾◾◾◾◾] across the ends of the wire.


Physics 12

Practical Physics

A student investigated how the height of a ramp affects the force needed to pull a

wooden block up the ramp at a steady speed. The diagram shows the apparatus used

by the student.

Q1a What was the independent variable in this investigation?

Q1b What was a control variable in this investigation?


Physics 13

A student investigated the cooling effect of evaporation. She used the equipment

(datalogger and probe) in the diagram to measure how the temperature of a liquid

changed as the liquid evaporated.

Q2a Which type of variable was the temperature in this investigation?

The student could have used the thermometer shown below.

Q2b How does the resolution of the equipment in Figure 5 compare with the resolution of the thermometer?


Physics 14

A teacher used a Geiger-Műller (GM) tube and counter to measure the background radiation in her laboratory. The teacher reset the counter to zero, waited one minute and then took the count reading. The teacher repeated these two more times.

The three readings taken by the teacher are given in the table.

Q3a The three readings are different. What is the most likely reason for this?

Q3b Which one of the following questions cannot be answered by scientific study?


Physics 15

The diagram shows some apparatus and a sheet of card.

The sentences describe how to find the centre of mass of the sheet of card.

The sentences are in the wrong order.

A Tie the mass to one end of the string and then hang the string from the pin.

B Repeat this using the other hole. The centre of mass is where the two lines cross

on the card.

C Put the pin through one of the holes in the card and hold the pin in the boss.

D Draw a line on the card marking the position of the string.

E Make two holes in the card, with each hole near to the edge of the card.

Q4 Put the sentences into the correct order to describe how to find the centre of mass of the card. Start with E and end with B.

Write the correct order in these boxes.


Physics 16

Energy

The electric kettle shown is used to boil water.

Q1a Why is the total energy input to the kettle higher than the energy used to heat the water?

A new type of electric kettle is made from two layers of plastic separated by a vacuum. After the water in the kettle has boiled, the water stays hot for at least 2 hours.

Q1b Which energy transfers does a vacuum reduce?


Physics 17

In some countries, people are too poor to pay for electricity. Some people living in small houses with no natural light use bottles filled with water as a sort of light bulb.

The bottles are fitted into small holes in the roof of the house. Sunlight goes into the bottle of water. When the light leaves the bottle, the light is refracted, causing sunlight to spread into the room.

Q2 What is likely to be the most important outcome of using this simple device to provide light?

Q3 The bar chart shows the power of three different electric hairdryers.

Which one of the hairdryers, A, B or C, would transfer the most energy in 5 minutes?

Solutions Physics 18

Multiple Choice Physics 1 GCSE Exam Questions Forces

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