P1 foundation

Clevedon School

Science Department

Physics P1 Interim Test Foundation

Write all answers on lined paper.

Do not write in this booklet

2 EQUATIONS energy = mass × specific heat capacity × temperature change energy = mass × specific latent heat efficiency =

useful energy output (× 100%) total energy input

wave speed = frequency × wavelength power = voltage × current energy supplied = power × time average speed =

distance time

distance = average speed × time s=

acceleration =

(u + v) ×t 2 change in speed time taken

force = mass × acceleration weight = mass × gravitational field strength work done = force × distance power =

work done time

power = force × speed KE =

1 2 mv 2

momentum = mass × velocity force =

change in momentum time

GPE = mgh mgh =

1 2 mv 2

resistance = © OCR 2012

voltage current

14 SECTION C – Module P1 9

This question is about waves.

Look at the diagram of a wave.

2.0 displacement in cm

1.0 0

0

1

2

3

4

5

6

7

8 distance in cm

–1.0 –2.0 (a) (i)

What is the amplitude of the wave? answer ................................................... cm [1]

(ii)

What is the wavelength of the wave? answer ................................................... cm [1]

(b) The wave has a frequency of 600 Hz. Calculate the speed of the wave in cm/s. ................................................................................................................................................... ................................................................................................................................................... answer ................................................. cm/s [2] [Total: 4]

© OCR 2013

27 (b) Infrared waves have a frequency between visible light and microwaves.

Use the data in the table to estimate the frequency of infrared waves.

[1]

answer ................................ Hz (c) Look at the picture of a prism.

air

glass prism

ray of light

Rays of light are being reflected and refracted.

Complete the diagrams to show where reflection and refraction happen at surface X and explain why refraction happens. reflection

surface X

refraction

surface X

explanation ............................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [3] [Total: 5]

END OF QUESTION PAPER

Š OCR 2012

15 Section C – Module P1 9

This question is about waves. (a) Look at the diagram of a wave.

X

displacement

time Y

(i)

Write down the name of the feature labelled X. ...................................................................................................................................... [1]

(ii)

Write down the name of the feature labelled Y. ...................................................................................................................................... [1]

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Turn over for the remainder of question 9

16 (b) Zeta drops a ball into a pond.

She notices that the ball causes ripples 8 cm apart.

The ball moves up and down on the water with a frequency of 2 Hz.

ripples

pond

8 cm Calculate the speed that the wave moves over the water. ................................................................................................................................................... ................................................................................................................................................... answer .................................... cm/s

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[2]

17 (c) Zeta drops the ball into different parts of the pond.

These parts have different depths.

Look at the graph of her results.

20

15 speed of waves in cm / s

10

5

0

0

20

40

60 80 depth in cm

100

120

Complete the sentence using information from the graph.

When the pond gets ................................. the speed of the waves .................................

[1]

[Total: 5]

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Turn over

19 11 Vicky finds that the energy bills for her house are high.

She investigates ways of reducing them.

She expects that double glazing her windows will reduce the energy loss by 50%.

After fitting the double glazing she finds that the energy loss has not reduced by 50%.

Describe and explain how she could further reduce her energy loss and explain why the energy loss has not halved.

The quality of written communication will be assessed in your answer to this question. .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... ..................................................................................................................................................... [6] [Total: 6]

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Turn over

20 12 (a) Many telephone companies use optical fibres to carry signals over large distances.

Look at the enlarged diagram of an optical fibre.

Continue the ray to show its path along the fibre from one end to the other.

[2]

(b) Lasers produce a narrow intense beam of light.

Write down one use of a laser. ................................................................................................................................................... .............................................................................................................................................. [1] (c) Some people think the use of mobile phones is safe.

Others think mobile phones may be harmful to health.

Write about one of the possible health risks from using mobile phones and suggest how this risk can be reduced. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] [Total: 5] Š OCR 2012