Edexcel GCSE (9-1) Physics SP4 Waves Test With Mark Scheme 16_17

1. The diagram shows a water wave.

(a) (i) The amplitude of the wave is (1) A

1 cm

B

2 cm

C

4 cm

D

8 cm

(ii) The wavelength of the wave is (1) A

2 cm

B

4 cm

C

8 cm

D

20 cm

(b) State two properties that are the same for all electromagnetic waves. (2) 1....................................................................................................................................................... 2.......................................................................................................................................................

(Total for question = 4 marks)

2. There is a piece of music called "The Flight of the Bumble Bee." This takes 4 minutes to play. During this time, a bee flies 1608 m. Calculate the average speed of the bee. (3)

speed ........................................................... m/s (Total for question = 3 marks)

3. (a) Which statement about sound waves is correct? (1) A

sound waves cannot be reflected

B

sound waves are electromagnetic

C

sound waves are longitudinal

D

sound waves are transverse

(b) A microphone is connected to a data logger, which displays each sound wave as a graph. The diagrams show the graphs for two different sound waves.

The graphs have the same scales. In the horizontal direction: 1 square = 0.001 s (i) The amplitude of sound wave Q is (1) A

larger than the amplitude of sound wave P

B

smaller than the amplitude of sound wave P

C

the same as the amplitude of sound wave P

D

zero

(ii) The frequency of sound wave P is 250 Hz. Find the time period of sound wave P. (1)

time period = ........................................................... S (iii) Find the frequency of sound wave Q. (1)

frequency = ........................................................... Hz (Total for question = 4 marks)

4. (a) The diagram represents a microwave travelling in free space from point A to point B.

(i) The distance from A to B is 0.60 m. Calculate the wavelength of this microwave. (2)

wavelength = ........................................... m

(ii) State the equation linking wave speed, frequency and wavelength. (1)

(iii) Calculate the frequency of this microwave. [speed of microwave in free space = 3.0 × 108 m/s] (3)

frequency = ............................................ Hz (Total for question = 6 marks) 5. * Explain the differences between longitudinal and transverse waves. Your explanation should refer to ultraviolet, ultrasound and seismic waves. (6) ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. (Total for question = 6 marks)

6. Ultrasound from a fishing boat is used to find fish. (i) Which of these is correct for ultrasound waves? Put a cross ( ) in the box next to your answer. (1) A ultrasound waves have a frequency above 20 000 Hz B ultrasound waves have a frequency below 20 Hz C ultrasound waves have a wavelength above 20 000 Hz D ultrasound waves have a wavelength below 20 Hz (ii) Complete the sentence by putting a cross ( ) in the box next to your answer. The system that uses ultrasound to find fish is called (1) A fibre optics B satellite transmission C sonar D thermal imaging (iii) The diagram shows a fishing boat above some fish.

(iii) Describe how ultrasound waves are used to detect the fish. You may add to the diagram to help with your answer. (2) .............................................................................................................................................. .............................................................................................................................................. .............................................................................................................................................. ..............................................................................................................................................

(Total for question = 4 marks)

7. The diagram shows changes to light waves passing from air into glass.

(a) (i) The effect shown in the diagram is (1) A B C D

diffraction dispersion reflection refraction

(ii) State two ways in which the light waves change as they pass into the glass. (2) 1 .......................................................................................................................................... 2 .......................................................................................................................................... (b) (i) Draw the normal to the incident ray on the diagram. (1) (ii) Label the angle of incidence on the diagram. (1) (Total for question = 5 marks)

8. Earthquakes and seismic waves (a) Earthquakes produce seismic waves and infrasound waves. Which row of the table is correct for these waves? Put a cross ( ) in a box to show your answer. (1)

(b) The chart shows how the speed of P-waves varies with the depth in the Earth’s mantle.

(i) State what happens to a P-wave when it crosses from the mantle into the core. (1) .............................................................................................................................................. ..............................................................................................................................................

(ii) Describe how the speed of a P-wave changes between a depth of 1000 km and 2500 km. (2) .............................................................................................................................................. .............................................................................................................................................. .............................................................................................................................................. .............................................................................................................................................. (iii) The average speed of a P-wave in the mantle is 12 km/s. A P-wave travels vertically down from the surface and reflects from the core–mantle boundary back to the surface. It travels a total distance of 5800 km. Calculate the total time of travel for the wave. (3) time = .................................................................... s (c) A class investigates the force needed to start a wooden block moving on a rough surface. They use the apparatus shown.

Each student repeats the experiment five times. A set of results for one student is shown in the table. attempt force needed to start block moving / N 1 30 2 57 3 26 4 48 5 39 All the students in the class get a similar wide range of results. Explain what the results show about predicting earthquakes. (1) .............................................................................................................................................. .............................................................................................................................................. .............................................................................................................................................. ..............................................................................................................................................

(Total for question = 9 marks)

[TOTAL FOR PAPER = 40 MARKS]

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