IGCSE-PHYSICS

*1. Hello~小伙伴，欢迎来做这份测评卷。在这里留下你的姓名和学校，让四老师了解你的学习情况噢~

*2. 1.A student uses a ruler to measure the length and the width of a small rectangular metal plate.

What is the area of the plate?

*3. 2.The diagram shows the speed/time graph for a train as it travels along a track.For which part of the graph is the train s speed changing at the greatest rate?

*4. 3.A small steel ball is dropped from a low balcony.Ignoring air resistance,which statement describes its motion?

A、 It falls with constant acceieration.

B 、It falls with constant speed.

C 、It falls with decreasing speed.

D、 It falls with increasing acceleration.

E、还没学过

*5. 4.Which is the unit for force and which is the unit for weight?

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

*7. 6.Four rectangular blocks, P, Q, R and S are shown. Each block i s labelled with its size and its mass.Which two blocks have the same densi ty?

*8. 7.A force acting on an object causes some properties of the object to change. Which list contains only properties that can be changed by the action of the force?

A、 mass, motion and shape

B、 mass, motion and size

C、 mass, shape and size

D、 motion, shape and size

E、还没学过

*9. 8.A box is being moved by a fork-lift truck. The total wei ght of the box is 3000 N.The force exerted by the fork-lift truck on the box is 3500 N upwards. What is the resultant force on the box?

*10. 9.Some energy sources are reliably available at all times. and some are not. Which row shows three sources all in their correct columns?

*11. 10.A woman in a factory has to lift a box on to a shelf.Which action involves the woman in doing the least amount of work?

A、 lifting the box quickly to the high shelf

B 、lifting the box slowly to the high shelf

C 、lifting the box to the low shelf first then lifting it to the high shelf

D、 lifting the box to the low shelf instead of to the high shelf

E、还没学过

*12. 11.A drawing pin (thumb tack) has a sharp point and a flat 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 at the flat end?

*13. 12.The diagrams show four divers at the bottom of four different swimming pools. Two swimming pools contain fresh water and two contain salt water. Fresh water is less dense than salt water. Which diver feels the least pressure from the water?

*14. 13.The diagram shows a sealed jar containing a gas.Which statement about the gas in the jar is correct?

A、 The gas molecules collide with the inside of the jar more often as the temperature increases.

B、 The gas molecules move more slowly as the temperature increases.

C 、The pressure of the gas decreases as the temperature increases.

D、 The pressure of the gas is higher at the top of the jar than at the bottom of the jar.

E、还没学过

*15. 14.A block of ice cream is prevented from melting by wrapping it in newspaper soaked in water.The water evaporates from the newspaper.

Which molecules escape from the water and what happens to the average speed of the water molecules that remain in the newspaper?

*16. 15.Equal masses of two different liquids are heated using the same heater. The graph shows how the temperature of each liquid changes with time.What does the graph tell us about the liquids?

A、 Liquid 1 has a higher melting point than liquid 2.

B、 Liquid 1 has a higher boiling point than liquid 2.

C、Liquid 1 starts to melt sooner than liquid 2.

D、 Liquid 1 starts to boil sooner than liquid 2.

E、还没学过

*17. 16.A wooden wheel can be strengthened by putting a tight circle of iron around it.Which action would make it easier to fit the circle over the wood?

A、 cooling the iron circle

B 、heating the iron circle

C、 heating the wooden wheel and cooling the iron circle

D、 heating the wooden wheel but not heating or cooling the iron circle

E、还没学过

*18. 17.A man goes into a cold room and switches on a heater.The man then stands one metre away from the heater.He feels warmer almost immediately.How is thermal energy transferred from the heater to the man so quickly?

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

*20. 19.Which row shows an example of a transverse wave and an example of a longitudinal wave?

*21. 20.A boy throws a small stone into a pond. Waves spread out from where the stone hi ts the water and travel to the side of the pond. The boy notices that eight waves reach the side of the pond in a time of 5.0 s. What is the frequency of the waves?

*22. 21.The table gives common uses for three types of electromagnetic wave. Which row correctly identifies the waves?

*23. 22.The diagram shows a ray of li ght passing through a semicircular glass block into air.Which row gives the correct name for angle P and states how angle P compares with the critical angle?

*24. 23.Which diagram shows how an image of an object is formed on a screen by a converging lens?

*25. 24.When the volcano Krakatoa erupted in 1883, it was heard 5000km away. Which statement about the sound from the volcano is not correct?

A、 I f such a loud sound were to be made today, an astronaut orbiting in space (a vacuum) at a height of 400 km could hear it.

B、 People further from the volcano heard the sound later than people nearer to the volcano.

C、 The amplitude of the sound waves would have been smaller further from the volcano.

D、 The sound was very loud because a lot of energy was transferred to vibrations of the air.

E、还没学过

*26. 25.A loudspeaker on a boat produces a pulse of sound in the sea,The echo of the pulse is received back at the boat after 3.0s.The depth of the sea under the boat is 2250m.From this information,what is the speed of sound in the sea water?

*27. 26.A hard magnetic material can be used to make a permanent magnet.

A soft magnetic material can be used to make a temporary magnet.

Which row shows whether iron and steel are hard or soft manetic materials?

*28. 27.How can a permanent magnet be demagnetised?

A、 cool the magnet for a long time

B、 hit the magnet repeatedly with a hammer

C、 leave the magnet in a coil which is connected to a battery

D、 shine bright light onto the magnet

E、还没学过

*29. 28.Which equation can be used to calculate the resistance R of a resistor?

*30. 29.A student wishes to measure first the electromotive force (e.m.f.) of a battery, and then the potential difference (p. d.) across a resistor. She has the resistor , the battery and some connecting wires. What else does she need?

A、a force meter (newton meter) and a voltmeter

B、an ammeter and a voltmeter

C 、an ammeter only

D、a voltmeter only

E、还没学过

*31. 30.Two similar balloons hang side by side, on insulating threads, a short distance apart. They are both rubbed with the same dry cloth and become charged. Which diagram shows how the balloons hang after charging?

*32. 31.When the thermistor in the circuit below is heated, the current in the lamp increases.Why does this happen?

A、 The resistance of the lamp decreases.

B、 The resistance of the lamp increases.

C、 The resistance of the thermistor decreases.

D、 The resistance of the thermistor increases.

E、还没学过

*33. 32.A student connects various resistors in parallel pairs.Underneath each diagram is a statement about the total resistance of each pair of resistors. Which statement is correct?

A

B

C、还没学过

*34. 33.The circuit shown contains a relay.Both lamps are initially off.When switch S i s closed, the relay operates. What i s the state of the lamps?