# GATEWAY SCIENCE B651/01 PHYSICS B Unit 1 Modules P1 P2 P3 (Foundation Tier)

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1 F GENERAL CERTIFICATE OF SECONDARY EDUCATION GATEWAY SCIENCE B651/01 PHYSICS B Unit 1 Modules P1 P2 P3 (Foundation Tier) *CUP/T63931* Candidates answer on the question paper A calculator may be used for this paper OCR Supplied Materials: None Other Materials Required: Pencil Ruler (cm/mm) Monday 19 January 2009 Morning Duration: 1 hour * B * INSTRUCTIONS TO CANDIDATES Write your name clearly in capital letters, your Centre Number and Candidate Number in the boxes above. Use black ink. Pencil may be used for graphs and diagrams only. Read each question carefully and make sure that you know what you have to do before starting your answer. Answer all the questions. Do not write in the bar codes. Write your answer to each question in the space provided, however additional paper may be used if necessary. INFORMATION FOR CANDIDATES The number of marks is given in brackets [ ] at the end of each question or part question. A list of physics equations is printed on page two. The total number of marks for this paper is 60. This document consists of 20 pages. Any blank pages are indicated. FOR EXAMINER S USE Section Max. Mark A 20 B 20 C 20 TOTAL 60 [M/103/4266] SPA (CM/SHW) T63931/7 OCR is an exempt Charity Turn over

2 2 EQUATIONS efficiency = useful energy output total energy input wave speed = frequency wavelength power = voltage current energy (kilowatt hours) = power (kw) time (h) speed = distance time taken acceleration = change in speed time taken force = mass acceleration work done = force distance power = work done time

3 3 Answer all the questions. Section A Module P1 1 (a) Look at the diagrams and temperatures of three objects. The objects are in a room at 20 C. cup of tea at 80 C bath of hot water at 30 C glass of water at 0 C Which object cools the fastest? Choose from the list. cup of tea bath of water glass of water answer... [1] Turn over for remainder of question 1

4 4 (b) Molly takes a block of ice from her freezer. She puts it in a warm room at 20 C. Look at her graph of how the temperature changes with time temperature in C 10 X 0 time 10 What is happening to the ice in the part of the graph marked X? Choose from the list. boiling condensing evaporating freezing melting answer... [1] [Total: 2]

5 5 2 (a) Look at the table of some objects in Kevin s house. They are made from different materials. Some materials are good conductors of heat. Some materials are bad conductors of heat. Put a tick ( ) in the correct box to show if the material is a good or bad conductor of heat. The first one has been done for you. material good conductor bad conductor steel radiator copper pan wooden handle glass dish aluminium kettle polystyrene foam [2] (b) Kevin wants to save money by insulating his house. He wants to reduce the energy lost by conduction. Suggest one way he could reduce the energy lost by conduction.... [1] Turn over for remainder of question 2

6 6 (c) To save more money Kevin replaces the light bulbs in his house with low-energy bulbs. One of the light bulbs uses joules of electrical energy in one hour. It gives out joules of light energy in one hour. Calculate the efficiency of the bulb. The equations on page 2 may help you. answer... [2] [Total: 5] 3 This question is about radiation. Look at the diagram of a radiator. wall radiator shiny foil (a) The air touching the radiator is heated and moves away. Draw an arrow on the diagram to show the direction of the air as it moves away. [1] (b) The radiator gives out infrared radiation. Shiny foil stops the radiation going through the wall. Explain how.... [1]

7 (c) Rob investigates heat loss by radiation. 7 Look at the apparatus. thermometer dull black metal tube shiny silver metal tube A B He puts the same amount of hot water into each tube. Both tubes start at the same temperature. He takes the temperature in each tube every minute. Look at the graph of his results. Look at the line for tube A. temperature tube A 0 0 time On the graph, draw the line that you would expect for tube B. [2] [Total: 4] Turn over

8 4 This question is about different electromagnetic waves. 8 (a) (i) Louis cooks a large potato. The middle of the potato gets hot more quickly if he uses a microwave oven instead of a conventional oven. Explain why [1] (ii) Microwaves are used for cooking. Write down one other use of microwaves.... [1] (b) (i) The Sun gives out ultraviolet rays. These rays affect the human body. Write down two ways in which ultraviolet rays affect humans [2] (ii) Explain how we can reduce the effects of ultraviolet rays on the human body [2] [Total: 6]

9 5 Look at the diagram of a wave. 9 B A C E D (a) Complete the following sentences by using letters from the diagram. (i) A crest is shown by letter [1] (ii) The wavelength is the distance between letter and letter [1] (b) CD players use laser beams. The light is reflected from a shiny surface. This produces a digital signal. What is a digital signal?... [1] [Total: 3] Turn over

10 10 Section B Module P2 6 Some road signs have lights. These lights are powered by photocells. The picture shows one of these signs. A Tiernan / OCR (a) Complete these sentences about photocells. Photocells transfer energy into energy. Photocells produce the same type of current as batteries. This is current. [3] (b) Using photocells has advantages and disadvantages. Describe one advantage and one disadvantage of using photocells. advantage... disadvantage [2] [Total: 5]

11 11 7 Lloyd does an experiment to investigate the dynamo effect. Look at the diagram of the equipment Lloyd uses. ammeter 0 magnet N S coil Electricity can be generated using this equipment. Describe two different things that Lloyd can do to generate electricity [2] [Total: 2] Turn over

12 8 This question is about electrical power. 12 Sam has many electrical appliances in his house. The table shows some of them. Look at the table. appliance power in watts deep fat fryer 2000 electric cooker 5000 kettle 3000 microwave 1000 radio 50 (a) Sam uses each appliance for three minutes. (i) Which appliance costs exactly twice as much to run as the microwave?... [1] (ii) Explain your answer.... [1] (b) The electric cooker has a power of 5 kw (5000 watts). It is switched on and used for 3 hours. Electricity costs 12 p for each unit. Calculate the cost of using the electric cooker for 3 hours. The equations on page 2 may help you. answer =...pence [2] [Total: 4]

13 9 This question is about the Earth, the Moon and other objects in the Universe. 13 This is a photograph of the Earth-Moon system. (a) The Earth is a planet. NASA, Astronomers have found other planets and moons in the Universe. Name two other types of object that they have found in the Universe [2] (b) Some scientists think that our Earth-Moon system was formed after a collision. They think that billions of years ago something hit the Earth. Describe how our Earth-Moon system could have been formed in this way.... [2] [Total: 4] Turn over

14 10 This question is about space. 14 Draw lines to connect each object / event to the correct statement about it. object / event artificial satellites statement Universe began with an explosion cosmic rays causes solar flares Sun ionising radiation from space Big Bang used for weather forecasting [3] [Total: 3] 11 Charlotte s teacher shows her class an experiment with nuclear radiations. There are three types of nuclear radiation. Complete the following statement. Choose from the list. protons x-rays gamma rays radio waves beta particles alpha particles The three types of nuclear radiation are [2] [Total: 2]

15 15 Section C Module P3 12 (a) Mark calculates the average speed of pupils running on the school field. He needs to measure distance time. Name the equipment that Mark needs to measure distance and time. He measures distance with a.... He measures time with a.... [2] (b) Look at the results for one of the runners. distance = 120 metres time = 20 seconds Calculate the average speed of this runner. The equations on page 2 may help you. answer... m/s [2] Turn over for the remainder of question 12

16 16 (c) Mark measures the speed and time for Tom running. He draws a graph of the results. Look at the speed-time graph for Tom. B C speed A time D (i) Which part of the graph shows Tom running at a steady speed? Choose from the list. A B B C C D answer... [1] (ii) Which letter shows when Thomas stopped running? Choose from the list. A B C D answer... [1] [Total: 6]

17 17 13 This question is about forces and motor cars. Emily is going to drive her car. Look at the diagram of Emily s car. mass of car = 1200 kg accelerating force (a) Emily starts her car and drives forwards. The car accelerates at 3 metres per second squared (m/s 2 ). Calculate the accelerating force on the car. The equations on page 2 may help you. answer... N [2] (b) When Emily s car is moving it has kinetic energy (KE). How could she increase the KE of her car? Write down two things that she could change [2] (c) Emily s car uses a fuel for its energy. This fuel is made from a fossil fuel. What fuel could Emily put into her car?... [1] [Total: 5] Turn over

18 18 14 This question is about car safety and power. (a) Modern cars have many safety features. Look at the diagram. collapsible steering column traction control There are two types of safety features active (for example, traction control) passive (for example, collapsible steering column) Write down three other active or passive safety features in modern cars [3] (b) Cars transfer energy from the fuel into kinetic energy. Different cars do this at different rates. This determines the power rating of each car. Complete the following sentences. Choose from the list. higher watts lower work battery fuel joules Power measures how quickly is being done. Power is measured in. Cars with bigger engines have power ratings. This gives them larger consumptions. [3] [Total: 6]

19 15 Britney is a skydiver. 19 Skydivers jump out of planes. They fall for several seconds before they open a parachute. (a) What happens to Britney s speed just after she jumps out of the plane?... [1] (b) What force is causing Britney to fall towards the ground?... [1] (c) Britney opens her parachute. She slows down. What force is causing her to slow down?... [1] [Total: 3] END OF QUESTION PAPER

20 20 PLEASE DO NOT WRITE ON THIS PAGE Copyright Acknowledgements: Q.9 image NASA, Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (OCR) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. OCR is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.

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