Cambridge IGCSE Physics - 0625 - Core Paper 1 2016 Summer Zone 1

The diagram shows an enlarged drawing of the end of a metre rule. It is being used to measure the length of a small feather. What is the length of the feather?

A train begins a journey from a station and travels 60 km in a time of 20 minutes. What is the average speed of the train?

Two runners take part in a race. The graph shows how the speed of each runner changes with time. What does the graph show about the runners at time $t$?

A cup contains hot liquid. Some of the liquid evaporates. What happens to the mass and what happens to the weight of the liquid in the cup?

An object has a mass of 50 kg.
The gravitational field strength on Earth is $10.0 \text{ N/kg}$.
The gravitational field strength on a distant planet is $4.0 \text{ N/kg}$.
What is the weight of the object on Earth, and what is its weight on the distant planet?

A student wishes to determine the density of an irregularly-shaped stone. First he finds the mass of the stone. Next he lowers the stone into a measuring cylinder containing water. The diagrams show the measuring cylinder before and after the stone is lowered into it. How should the student calculate the density of the stone?

Which is an example of a force?

The diagram shows an object of weight $W$ and an object of weight $Z$ balanced on a uniform metre rule.
Which equation relating to $W$, $Z$, $a$ and $b$ is correct?

A skier walks from the bottom of a ski slope to the top and gains 10 000 J of gravitational potential energy.
She skis down the slope. At the bottom of the slope, her kinetic energy is 2000 J.

How much energy is dissipated in overcoming friction and air resistance as the skier moves down the slope?

A coal-fired power station generates electricity. Coal is burnt and the energy released is used to boil water. The steam from the water makes the generator move and this produces electricity.
Which words are used to describe the energy stored in the coal and the energy of the moving generator?
[Table_1]

Four different children run up the same set of stairs.
For which child is the useful power to climb the stairs the greatest?
[Table_1]

The diagram shows three vases each with the same base area. Each vase contains water of the same depth.
Which statement about the water pressures at points P, Q and R is correct?

The diagram shows a simple mercury barometer.

The atmospheric pressure increases.
Which distance increases?

Which statement about evaporation is correct?

A gas is stored in a sealed container of constant volume. The temperature of the gas increases. This causes the pressure of the gas to increase.
What happens to the gas molecules during this pressure increase?

A substance loses thermal energy (heat) to the surroundings at a steady rate. The graph shows how the temperature of the substance changes with time.
What could the portion PQ of the graph represent?

A student wishes to check the upper and the lower fixed points on a Celsius scale thermometer.

She has four beakers P, Q, R and S.

Beaker P contains a mixture of ice and salt.
Beaker Q contains a mixture of ice and water.
Beaker R contains boiling salt solution.
Beaker S contains boiling water.

Which two beakers should she use to check the fixed points?

The same quantity of thermal energy is supplied to two solid objects X and Y. The temperature increase of object X is greater than the temperature increase of object Y.
Which statement explains this?

A liquid is heated in a beaker.
[Image_1: Diagram of a liquid in a beaker with heating].
The density of the liquid changes as its temperature increases. This causes energy to be transferred throughout the liquid.
How does the density change and what is this energy transfer process?
[Table_1: Density and energy transfer process table]

A rod is made half of glass and half of copper. Four pins A, B, C and D are attached to the rod by wax. The rod is heated in the centre as shown.
The pins fall off when the wax melts.
Which pin falls off first?

Which row shows the natures of light waves, sound waves and X-rays?
[Table_1]

Radio waves are received at a house at the bottom of a hill. The waves reach the house because the hill has caused them to be

The ray diagram shows the image of an object formed by a converging lens.

What is the focal length of the lens?

The diagram shows the dispersion of white light by a prism.

Which row could be correct for the colours seen at X, at Y and at Z?

Why can ultrasound not be heard by humans?

A sound wave has a certain amplitude and a certain frequency. A second sound wave is quieter and lower in pitch than the first sound wave. The second wave has

Which statement about a magnet is correct?

A student wishes to make a permanent magnet. She has an iron rod and a steel rod.
Which rod should she use to make the permanent magnet, and is this rod a hard magnetic material or a soft magnetic material?
[Table_1]

The circuit shown includes two meters X and Y, connected correctly.
Which row gives the unit of the quantity measured by X and the unit of the quantity measured by Y?
[Table_1] Meter X | Meter Y
A amprere | ampere
B ampere | volt
C volt | ampere
D volt | volt

A polythene rod is rubbed with a cloth.
The rod and the cloth both become charged as electrons move between them.
The rod becomes negatively charged.
Which diagram shows how the rod becomes negatively charged, and the final charge on the cloth?

What is the function of a relay?

The circuit shown contains three ammeters X, Y and Z.
Which ammeter has the largest reading?

The diagram shows part of a circuit used to switch street lamps on and off automatically.
In the evening it gets dark.
Which row shows the effect on the resistance of the light-dependent resistor (LDR) and on the potential difference (p.d.) across it?

A domestic circuit includes a 30A fuse. This protects the wiring if there is too much current in the circuit. In which wire is the 30A fuse positioned, and what does it do when it operates? [Table_1]

A strong electromagnet is used to attract pins.
What happens when the current in the coil is halved?

The diagram shows a transformer.

The input voltage is 240V.
What is the output voltage?

How many neutrons are in a nucleus of the nuclide $^{37}_{17}\text{Cl}$?

A certain element has several isotopes.
Which statement about these isotopes is correct?

A radioactive nucleus emits either an $\alpha$-particle or a $\beta$-particle.
What are the products of these two types of radioactive emission?
[Table_1]

A reading is taken every 10 minutes of the number of emissions per second from a radioactive source. The table shows the readings.
[Table_1]
What is the half-life of the source?