AQA - GSCE Science - Double Award F - Paper 3 - Friday 16 June 2000
1. The diagram shows a child on a slide.
(a) Use words or phrases from the list to complete the sentences.
elastic frictional gravitational
less than more than the same as
When the child goes down the slide the elastic frictional gravitational less than more than the same as force makes him go faster.
On a damp day the child takes longer to go down the slide. This is because on a damp day the force of friction is elastic frictional gravitaional less than more than the same as .on a dry day. (2)
(b) Use words or phrases from the list to complete the sentence.
elastic gravitational potential kinetic (movement) light sound thermal (heat)
When the child goes down the slide, the energy transfers are from elastic gravitationa potential kinetic light sound thermal (heat) energy to elastic gravitationa potential kinetic light sound thermal (heat) energy and. elastic gravitationa potential kinetic light sound thermal (heat) .energy. (3)
2 The diagram shows an iron connected to an electrical socket by a cable and 3-pin plug.
(a) Describe the structure of the electrical cable which connects the plug to the iron. (3)
Describe how the cable should be connected to the terminals of the plug The green and yellow wire is connected to the - neutral terminal live terminal earth terminal The brown wire is connected to the - neutral terminal live terminal earth terminal The blue wire is connected to the - neutral terminal live terminal earth terminal (3)
Describe how the cable should be connected to the terminals of the plug
3 (a) The list gives energy resources which can be used to produce electricity.
coal gas nuclear fuel oil sunlight tides waves wind wood
Choose the four non-renewable energy resources. (4)
(b) Use words from the list to complete the sentences about generating electricity.
energy gas generator smoke steam transformer turbine water
In a coal-fired power station, coal is burnt to release - energy gas generator smoke steam transformer turbine water
This is used to change - energy gas generator smoke steam transformer turbine water into - energy gas generator smoke steam transformer turbine water which drives a - energy gas generator smoke steam transformer turbine water
Electricity is produced by a - energy gas generator smoke steam transformer turbine water (5)
4 (a) Diagrams A, B and C show light rays passing into and out of semi-circular perspex blocks.
Which diagram A, B or C shows total internal reflection? . A B C
(b) Doctors can examine the inside of a patient's stomach by using optical fibres.
The diagram shows part of the device used.
Explain, as fully as you can, how light passes along an optical fibre.
(3)
5 A student investigated how the current flowing through component X changes with the voltage across it. The diagram shows the circuit used.
(a) Label parts A, B and C. A = . ammeter battery switch variable reisitor voltmeter B= . ammeter battery switch variable reisitor voltmeter C= . ammeter battery switch variable reisitor voltmeter
ammeter battery switch variable resistor voltmeter (3)
(b) The table shows the results obtained for component X
VOLTAGE (V)
-0.4
-0.2
0.0
0.2
0.4
0.5
0.6
0.8
1.0
CURRENT(mA)
0
1
4
10
30
50
(i) Draw a graph of current against voltage.
(ii) Name component X (1)
6 (a) The diagram shows a ray of red light passing through a prism On the diagram draw the path of this ray as it leaves the prism. (1)
(b) The second diagram shows a ray of white light passing through the prism
X= . green red violet yellow Y= . green red violet yellow
(i) X and Y are the ends of the spectrum. On the diagram, use words from the list to name the colour of the light at X and Y
green red violet yellow (2)
(ii) Use a word from the list to complete the sentence.
absorbed reflected refracted transmitted
A spectrum is produced because different colours of light are . absorbed reflected refracted transmitted to different extents. (1)
(c) List A gives six types of electromagnetic radiation. List B gives some of the uses of electromagnetic radiation.
Draw a straight line from each type of radiation to its use. One has been done for you.
(5)
7 (a) List A gives electrical devices which are designed to transfer energy. List B gives some energy transfers. Draw a straight line from each electrical device to the energy transfer it is designed to bring about. One has been done for you. (3)
The diagrams show the readings on a domestic electricity meter in February and May.
(i) Calculate the number of Units of electricity used between the two meter readings.
Number of Units .
(ii) One Unit costs 8p.
Calculate the cost of the energy used between the two meter readings.
Cost £ (3)
(b) (i) Use the equation to calculate the number of Units used by a 2 kW electric fire in 3 hours
Energy transferred kWh (2)
(ii) How many units of electricity does the electric fire use in 3 hours?
(1)
8 The diagram shows a steel block in three different positions, A, B and C on a bench.
(a) (i) Choose a number from the list to complete the following sentence.
2 5 10 20
On Earth the gravitational field strength is about N/kg.
(ii) Use the equation to calculate the weight of the steel block. (3)
Area cm2 (2)
(ii) The weight of the steel block is 15 N. Calculate the pressure exerted on the bench by the steel block when in position C.
Pressure N/cm2 (2)
(c) In which position, A, B or C does the steel block exert the greatest pressure on the bench?
Position - A B C
Explain your answer
9. The diagram shows the position of a heater and a window on the outside wall of a room.
The heater is switched on and warms the air. The warm air transfers energy round the room.
(a) (i) On the diagram, use arrows to show the path taken by the air which is warmed by the heater. (2)
(ii) Name this type of energy transfer to the room . (1)
(iii) Explain, as fully as you can, why the warmed air moves round the room in this way.
(4)
(b) Energy transfer from the room to the outside can be reduced by fixing a sheet of metal foil to the wall behind the heater.
Explain why the metal foil reduces energy transfer to the outside.
(2)
(c) Give two other ways of reducing the transfer of thermal (heat) energy from the room to the outside.
10 (a) Complete the sentences.
The Earth spins on its own once every..
The half of the Earth facing the Sun is in . (3)
(b) The diagram shows a model of the Solar System and stars. This was proposed by Ptolemy in the second century AD.
Give three ways in which this model of the Solar System differs from what we now know about the Solar System.
(c) Describe, in as much detail as you can, the orbit of a planet in the Solar System.
11 A student carries out an experiment with a steel ball bearing and a tube of thick oil.
The diagram shows the apparatus used. The student releases the ball bearing and it falls through the oil.
(a) Two forces X and Y act on the ball bearing as it falls through the oil. This is shown on the diagram.
Name force X
Name force Y (2)
(b) The graph shows how the speed of the ball bearing changes as it falls through the oil.
(i) What is happening to the speed of the ball bearing between points A and B? (3)
(ii) Explain, in terms of forces X and Y, why this happens
(iii) What is happening to the speed of the ball bearing between points C and D?
(iv) Explain, in terms of forces X and Y, why this happens.
12 A plastic ruler is rubbed with a duster. It is then held close to some chalk dust.
(a) Describe what you see when the ruler is held above the chalk dust.
Why does this happen?
(b) Give one example of how static electricity is used in everyday life
(c) (i) Give one situation in which static electricity is dangerous.
(ii) Explain how the electric charge, in this situation, can be discharged safely.