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A student measures the volume of a small irregularly-shaped stone. Which apparatus must be used?
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The graph shows how the speed of an object changes with time.
How far does the object travel in 10 seconds?
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A car travels at an average speed of 60 km/h for 15 minutes. How far does the car travel in 15 minutes?
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Which quantity is a force due to a gravitational field?
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The density of air is $1.2\, \text{kg/m}^3$. A room has dimensions $5.0\, \text{m} \times 4.0\, \text{m} \times 3.0\, \text{m}$. What is the mass of the air in the room?
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A student measures the length of a spring. She then attaches different weights to the spring. She measures the length of the spring for each weight.
The table shows her results.
[Table_1]
What is the extension of the spring with a weight of 3.0 N attached to it?
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Which statement gives a complete description of any object that is in equilibrium?
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The diagram shows a lamp.
Changing which feature increases the stability of the lamp?
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Brakes are used to slow down a moving car.
Into which form of energy is most of the kinetic energy converted as the car slows down?
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The power output from solar panels is recorded every day for a month. The graph shows the output recorded.
Which conclusion can be drawn from this graph?
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A drawing pin (thumb tack) has a sharp point at one end and a flat surface at the other end. The pin is pushed into a wooden board. How do the pressure and the force at the sharp point compare with the pressure and the force on the flat surface?
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The table shows four forces. Each force acts on a different surface.
Which row shows the least pressure?
[Table_1]
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A test-tube contains 1.0 cm³ of liquid water at 100°C. The liquid water boils to form 1600 cm³ of steam.
What is the reason for the large increase in volume?
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Which statement about the evaporation of a liquid is correct?
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Which effect is caused by thermal expansion?
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A liquid-in-glass thermometer uses a change in a property of a liquid to measure temperature. Which property is used?
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The diagram shows four labelled changes of state between solid, liquid and gas. Which changes need an energy input?
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A glass test-tube containing water is heated at the top. The water at the top boils, but the water at the bottom remains cold.
Which row explains why the water at the bottom of the test-tube remains cold?
[Table_1]
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In countries where it is usually hot, houses are often painted white.
What is the reason for this?
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The diagram shows wavefronts on the surface of water, viewed from above.
Which row is correct for the wavefronts moving from region 1 to region 2?
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Plane water waves approach a narrow gap in a barrier. Which diagram shows the diffraction pattern that would occur?
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The diagram shows the image of a clock in a plane mirror.
Which is the actual time?
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Total internal reflection may occur when light reaches an air-glass boundary. Under which conditions is light totally internally reflected? [Table_1]
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The diagram shows the electromagnetic spectrum.
A word is missing from the label below the spectrum.
Which word is missing?
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A man hears a starting pistol fire 1.5 seconds after he sees a puff of smoke from the pistol. The sound and the smoke are made at the same time. The starting pistol is 450 metres away from the man.
What is the speed of sound calculated from this observation?
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A student has a bar magnet. He brings the magnet close to an object. The magnet and the object repel each other.
What must the object be?
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Two soft-iron rods are placed end-to-end inside a coil. The coil is connected to a battery. The connections from the battery to the coil are now reversed. What happens to the soft-iron rods in each case? [Table_1]
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A plastic rod is rubbed with a dry cloth. The rod becomes positively charged.
Why has the rod become positively charged?
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A teacher asks her class "What quantity can be recorded in volts?".
Student 1 says "The potential difference across a resistor".
Student 2 says "The rating of a fuse".
Student 3 says "The electromotive force of a battery".
Which students are correct?
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The circuit shows two lamps connected to a d.c. supply.
The same lamps and power supply are arranged in different ways, as shown.
In which circuits will the lamps be the same brightness as in the original circuit?
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Identical resistors are connected together to form arrangements X, Y and Z. What is the correct order of the resistances of the arrangements from the largest to the smallest?
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A student uses 100 cm of resistance wire XY in a circuit to make a potential divider.
He changes the length of wire $l$ by moving the sliding contact along the resistance wire.
Which graph shows how the voltmeter reading changes as the length of wire $l$ is increased from zero to 100 cm?
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Where must a fuse be connected in a mains electric circuit?
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A student investigates the output voltage induced across a coil of wire by a bar magnet. When will the induced voltage have the greatest value?
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There is a current in a wire. The direction of the current is out of the page. Which diagram shows the magnetic field pattern produced?
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Which diagram shows a possible structure of a neutral atom?
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A nuclide of cobalt contains 27 protons and 32 neutrons.
Which symbol represents this nuclide?
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An isotope of radon is radioactive. It decays by emitting an $\alpha$-particle. What happens to the nucleus of a radon atom during the emission of the $\alpha$-particle?
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Why are some radioactive sources stored in boxes made from lead?
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