Cambridge IGCSE Physics - 0625 - Core Paper 1 2017 Winter Zone 1

A student measures the volume of a cork. He puts some water into a measuring cylinder and then one glass ball. He puts the cork and then a second, identical glass ball into the water as shown. [Diagram 1] shows the first water level.
[Diagram 2] shows the water level after one glass ball is added.
[Diagram 3] shows the water level after the cork and the second glass ball are added.
What is the volume of the cork?

The graph shows how the speed of a car varies over a period of 10 s. How far does the car travel during the 10 s?

The diagram shows how the speed of a falling object changes with time.

Which row describes the motion of the object between X and Y, and between Y and Z?

A spring is stretched by hanging a piece of metal from it.
Which name is given to the force that stretches the spring?

The graph shows how weight varies with mass on planet P and on planet Q.



An object weighs 400 N on planet P. The object is taken to planet Q. Which row is correct?

[Table_1]

What is needed to determine the density of a regularly shaped block?

A student conducts an experiment by hanging different loads on a spring. The diagrams show the lengths of the spring with different loads.
Which row gives the correct extensions of the spring? [Table_1]

A car mechanic is trying to loosen a wheel nut. He applies a force to the end of a spanner (wrench) at right-angles to the spanner. Which method provides the largest turning effect on the nut?

The diagrams show four table lamps resting on a table. The position of the centre of mass of each lamp is labelled X.
Which lamp is the most stable?

A pendulum bob swings from W, through points X and Y, to Z and then back to W.

Which statement is correct?

A student runs up a flight of stairs.

Which information is not needed to calculate the rate at which the student is doing work against gravity?

What is a manometer used to determine?

The diagram shows a simple mercury barometer.
Which length is used to find the value of atmospheric pressure?

A pollen grain in a beaker of still water is viewed through a microscope. Which diagram shows the most likely movement of the pollen grain?

The diagram shows an air-filled rubber toy. A child sits on the toy and its volume decreases. The temperature of the air in the toy does not change. How does the air pressure in the toy change and why?

A strip of iron and a strip of brass are firmly attached to each other along their entire length. This combination is a bimetallic strip. This bimetallic strip is heated and it bends as shown. The bimetallic strip is now cooled and becomes straight again.
What causes the bimetallic strip to become straight again?

The diagram shows an electric heater being used to heat a beaker of water and an identical beaker containing oil. Both are heated for one minute.
The temperature of the water and the temperature of the oil increase steadily. The increase in temperature of the oil is much greater than that of the water.
Why is this?

The air temperature in a cold room is 15°C. A heater that contains water at 50°C is used to heat the room. By which process is most of the thermal energy transferred throughout the air in the room?

Which statement about convection currents is correct?

The diagram represents a wave travelling along a rope. Which labelled arrow indicates the wavelength of the wave?

The diagram represents plane wavefronts of a water wave about to strike a solid barrier.
Which diagram shows the position of the wavefronts after reflection at the barrier?

The diagram shows an object in front of a plane mirror. A ray of light from the object is incident on the mirror. Through which point does the reflected ray pass, and at which point is the image of the object formed? [Table_1]

Which ray diagram shows a converging lens forming a real image of a small object O?

Visible light, X-rays and microwaves are all components of the electromagnetic spectrum.
Which statement about the waves is correct?

Space is a vacuum. Waves from stars are used to reveal information about the stars.
Which type of waves do not reveal information about stars?

A student stands 180 m in front of a vertical, flat cliff and bangs together two pieces of wood to make a short, loud sound. A timer records the echo of the sound 1.5 seconds after the pieces of wood are banged together. Based on this result, what is the speed of sound?

A train of steel nails and a train of iron nails hang from a strong magnet.
The trains are then carefully removed from the magnet.
What happens to the trains?

The north pole of a bar magnet is placed in turn next to each end of a rod X. One end of the rod moves away from the north pole but the other end moves towards the north pole.
The experiment is repeated with the bar magnet and a different rod Y but this time both ends of the rod move towards the north pole.
From which materials could the rods X and Y be made?
[Table_1]

A student investigates the electrostatic charges on three objects P, Q, and R.
The student places object P on the insulated pan of a balance and notes the reading on the balance. The student then holds object Q a small distance above object P and notes the reading on the balance. Finally, the student holds object R the same distance above object P and notes the reading on the balance.
The student’s observations are shown.
Which row gives possible charges that explain these observations?

Which equation is used to calculate resistance?

A student connects a circuit with a power supply, a lamp and an ammeter.
Where must the ammeter be connected?

Two $3.0 \, \Omega$ resistors are connected in parallel.
Which statement about their combined resistance is correct?

The diagram shows a potential divider circuit.
How does the movement of the slider affect the voltmeter reading?
[Table_1]

The diagram shows a circuit with a fixed resistor connected in series with a thermistor and an ammeter.
Which row shows how temperature change affects the resistance of the thermistor and the current in the circuit?
[Table_1]

An appliance is connected to a mains supply. Its circuit also contains a switch and a fuse.
Which circuit shows the fuse in the correct position?

There is an electric current in a straight wire in the direction into the page. This produces a magnetic field around the wire. All the field lines are circles but only one field line is shown. Which row describes the magnetic field? [Table_1]

A wire carrying a current is placed in a magnetic field. The wire experiences a force due to the field. Which action does not change the direction of the force?

Different isotopes of chlorine are represented as $^{35}_{17}Cl$ and $^{37}_{17}Cl$.
They behave the same way chemically.
Why is this?

A radioactive source emits three types of radiation R, S, and T. The diagram shows an experiment set up to study the penetrating properties of R, S, and T. Which types of radiation are R, S, and T?

What is meant by the half-life of a radioactive isotope?