No questions found
A candle burns evenly. It is used as a timer.
The candle is lit and burns down to point X in 2 hours.
To which labelled point does the candle burn down after a further 30 minutes?
509
529
510
A pendulum is swinging. Five students each measure the time it takes to swing through ten complete swings. Three students measure the time as 17.2 s. Another student measures it as 16.9 s, and the fifth student measures it as 17.0 s. What is the average period of the pendulum?
567
526
599
The speed-time graph represents a motorcycle journey. In which part of the graph is the acceleration equal to zero?
507
556
502
A shopkeeper pours rice into a dish that hangs from a spring balance. He records the reading.
A customer buys some pasta. The shopkeeper notices that the reading on the spring balance, with just pasta in the dish, is the same as it was with just rice in the dish.
Which quantity must be the same for the rice and for the pasta?
515
600
580
Four identical steel blocks weigh 120 N in total.
The gravitational field strength $g$ is $10 \text{ N/kg}$.
What is the mass of one steel block?
522
532
569
A steel ball bearing has a mass of 24g and a density of 8.0g/cm³. It is lowered into a measuring cylinder containing 12cm³ of water.
What is the new water level in the cylinder?
589
596
587
The diagram shows an object being acted upon by two forces.
What is the size of the resultant force on the object?
546
591
524
A student is asked to investigate the extension of a spring using the apparatus shown in the diagram. Which other piece of equipment is needed?
526
578
550
In which power station are atoms of one element changed to atoms of other lighter elements?
534
572
516
The diagrams show four different athletes training by doing pull-ups.
Which athlete does the most work?
586
538
564
A student uses her thumb to push in a drawing pin (thumb tack) into a notice board.
The pin goes into the board but does not penetrate her thumb.
Which statement explains this?
593
597
586
A solid cube has sides 0.50 m long and a mass of 120 kg. It stands on the ground on one face.
What pressure does the cube exert on the ground?
584
535
558
The diagram represents molecules of a gas inside a closed container of constant volume. What happens to the molecules of the gas when the container is heated?
522
535
583
Brownian motion is observed when using a microscope to look at smoke particles in air.
What causes the smoke particles to move at random?
569
529
563
The temperature of a bridge rises from 5°C on a cold night to 25°C at midday. What happens to the bridge?
567
591
531
Equal masses of two different liquids are put into identical beakers.
Liquid 1 is heated for 100 s and liquid 2 is heated for 200 s by heaters of the same power.
Each liquid has the same rise in temperature.
Which statement is correct?
530
501
538
A solid substance is heated at a constant rate. The solid changes into a liquid and then into a gas. The graph shows how the temperature of the substance changes.
What is the melting point and what is the boiling point of the substance?
587
549
558
A copper bar and a wooden bar are joined. A piece of paper is wrapped tightly around the join.
The bar is heated strongly at the centre for a short time, and the paper goes brown on one side only.
Which side goes brown, and what does this show about wood and copper?
509
576
568
Which types of thermal energy transfer require a medium?
519
591
556
What causes the change in direction when light travels from air into glass?
506
516
583
Which diagram shows how a converging lens forms a real image of an object O?
539
520
547
Which diagram shows what happens when a ray of white light passes through a prism?
534
504
511
The table shows different types of wave in the electromagnetic spectrum.
[Table_1]
Where do all the waves travel at the same speed?
560
567
578
The diagrams show four sources of waves. Which source produces longitudinal waves?
583
549
570
A fire alarm is not loud enough and the pitch is too low. An engineer adjusts the alarm so that it produces a louder note of a higher pitch. What effect does this have on the amplitude and on the frequency of the sound?
541
583
585
From which materials are the coil and the core of an electromagnet made? [Table_1]
586
593
511
In which way are a bar magnet and an electromagnet similar?
518
558
510
The diagram shows a circuit containing two resistors of resistance $1.0 \, \Omega$ and $2.0 \, \Omega$.
A voltmeter is connected across the $1.0 \, \Omega$ resistor by connecting P to X.
The reading on the voltmeter is 6.0 V.
P is moved to point Y in the circuit.
What is the new reading on the voltmeter?
501
593
505
The circuit diagram shows a simple circuit with a battery of electromotive force (e.m.f.) 6.0 V and two bulbs each of resistance 2.0 \( \Omega \).
Which row gives the readings on the ammeters?
583
501
506
The diagram shows three identical heating elements connected to a power supply.
Which arrangement of switches causes most power to be used?
536
523
597
A student connects a variable potential divider (potentiometer) circuit.
What happens to the reading on the voltmeter as the sliding terminal T is moved from R to S?
502
578
590
The diagram shows a circuit used to make a light detector. One component is connected between X and Y. Which component causes the ammeter reading to increase when the light gets brighter?
580
550
533
A circuit-breaker is designed to protect a circuit which usually carries a current of 2A. The time taken to break the circuit depends on the current, as shown in the graph . What happens when the current in the circuit is 2A and what happens when the current is 18A?
591
532
553
A wire moves in the direction shown between the poles of a magnet.
Which change increases the magnitude of the induced electromotive force (e.m.f.) across the ends of the wire?
513
571
599
Which description of a neutral atom of copper is correct?
593
529
524
A nuclide of iodine is represented by $^{131}_{53} ext{I}$.
How many neutrons are in a nucleus of this nuclide?
555
591
585
A sample of radioactive isotope is decaying.
The nuclei of which atoms will decay first?
511
521
579
The diagram shows a decay curve for a radioactive substance.
According to the curve shown, what is the background radiation count?
552
589
593
