Science Test Revision
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1 John Buchan Middle School Science Test Revision 4F Circuits and Conductors 39 min 38 marks Name John Buchan Middle School 1
2 Level 3 1. Conducting electricity (a) Year 6 are testing objects to see if they conduct electricity. The children use this circuit to test the objects. bulb cell (battery) clip clip The children place the objects between the clips. How will the children know if each object conducts electricity? (b) Does each object conduct electricity? Write yes or no in each row of the table. Object wooden ruler steel scissors sheet of paper rubber brass pin Does the object conduct electricity? 2 marks John Buchan Middle School 2
3 2. Simple circuit (a) Sue has a cell (battery), some wire and a bulb. She makes a simple circuit. Sue joins these objects into the circuit, to see if the bulb lights: cork iron nail copper rod plastic ruler steel spoon She records her results in this table. Object A B C D E spoon Bulb lights? No Yes Yes No Yes John Buchan Middle School 3
4 Object B is the steel spoon. Complete the sentences below to say what objects A and C are. (i) Object A is either the or the. (ii) Object C is either the..... or the. (b) Some of the objects are electrical insulators. Some are electrical conductors. Use the information in Sue s table. Write A, B, C, D and E in the correct group below to sort the objects. Electrical insulators Electrical conductors John Buchan Middle School 4
5 (c) David makes a circuit with two bulbs and one cell (battery). He draws a picture of it. In the space below, draw a circuit diagram of David s circuit. Use symbols. 3. Circuits (a) Lisa and James are testing different materials in a circuit. When they connect a steel fork in the circuit, the bulb lights. They put three other objects in the circuit, one at a time. John Buchan Middle School 5
6 Complete the table of results, to show what they found, by putting ONE tick for each object. One has been done for you. bulb lights bulb does not light steel fork plastic comb wooden spoon aluminium foil (b) Daniel has made a circuit. The circuit contains one new battery, two new bulbs and a switch. The bulbs are not lit in Daniel s circuit. Why are the bulbs not lit in this circuit?... John Buchan Middle School 6
7 (c) Draw a circuit diagram of Daniel s circuit. Use these symbols. battery switch bulb Level 4 4. Materials (a) Sarah and Rob are investigating the properties of materials. They compare wood, steel, paper, wax, aluminium and copper. They use a key to sort the materials. John Buchan Middle School 7
8 Complete the key by writing wood, steel, paper and wax in the correct answer boxes at the bottom of the key. Use each word once. You may put more than one word in an answer box. Does it conduct electricity? Yes No Is it attracted to a magnet? Does it melt? Yes No Yes No aluminium copper 2 marks 5. Electricity (a) Naomi's torch is not working. The cells (batteries) inside the torch are like this: bulb switch metal strip cell John Buchan Middle School 8
9 Naomi puts the cells back in a different way and the torch works. Write + and in the correct place in each cell below to show how Naomi puts them back. (b) Inside the torch, a metal strip connects the cells and bulb. Describe ONE property of metal that makes it a good material to connect the cells and bulb John Buchan Middle School 9
10 (c) In the space below, draw a circuit diagram of Naomi's torch with the cells put in correctly. Use only the following symbols: cell bulb switch 2 marks John Buchan Middle School 10
11 6. Identifying Materials (a) Kate and Ravi discussed the materials some things were made from. Complete each sentence below by writing ONE correct letter in each box. Use a letter only once. A an electric insulator B transparent C absorbent D an electric conductor E waterproof (i) Slate is used for roofs because it is (ii) Glass is used for windows because it is (iii) Plastic is used for the outside of the electric cable because it is 3 marks John Buchan Middle School 11
12 (b) Anna investigated some other materials. She recorded the properties of each material in a table. Complete the table. The first row has been done for you. Properties Materials steel nail magnetic transparent conducts electricity waterproof yes no yes yes newspaper wax candle copper pipe 3 marks John Buchan Middle School 12
13 Level 5 7. Train in the tunnel (a) Andrea wants a light bulb to light up when her toy train is pushed through a tunnel. She makes an electric circuit for her toy train. Andrea makes a tunnel and puts a strip of foil inside the tunnel roof. The picture shows Andrea s tunnel and the wiring on her train. position of foil inside the tunnel roof foil foil strip 1 foil strip 2 + tunnel bulb cell (battery) wire The foil strips on the train act like a switch. When both foil strips on the train touch the foil inside the tunnel roof, the bulb lights up. Complete the circuit diagram below by drawing the switch and the bulb to show the circuit on Andrea s train. (ii) (i) 2 marks John Buchan Middle School 13
14 (b) Give ONE property of metal foil which makes it a good material for Andrea to use as a switch.... (c) When only one foil strip on the train is touching the foil in the tunnel, the bulb does not light up. Complete the sentence to explain why the bulb does not light up. The circuit. (d) The bulb on the train only lights up when all of the train is inside the tunnel. Andrea wants to improve her circuit so the bulb lights up when the train has only just entered the tunnel. Which train has foil strips that would allow the bulb to light when the train has only just entered the tunnel? Tick ONE box John Buchan Middle School 14
15 8. Electricity (a) Shana builds the three circuits below. All the equipment works. The bulbs in the circuits are not lit up. Complete each sentence to explain why the bulb has not lit in each circuit. The bulb has not lit because the plastic spoon..... The bulb has not lit because..... John Buchan Middle School 15
16 The bulb has not lit because..... (b) Andy builds the circuit below. The bulbs do light up. John Buchan Middle School 16
17 Draw a circuit diagram for Andy s circuit in the space below. Use these symbols in your circuit diagram: (c) Andy wants to change his circuit so that the two bulbs are brighter. He can use any other equipment. Suggest TWO ways Andy can make his two bulbs brighter John Buchan Middle School 17
18 9. The Steady Hand Game (a) Sita has made a game. In her game, she has to move a metal ring along a piece of thick wire until it reaches the rest position. When she is moving it, the metal ring must not touch the wire. If it touches the wire, a bulb will light and a buzzer will make a noise. rest position (Wires and cell hidden inside the box) The metal ring and the thick wire both let electricity through. What is the scientific name for materials that let electricity through?... (b) Sita made the rest position by covering the wire with an insulating material. When she puts the metal ring down on the rest position, the bulb and buzzer cannot work. Which materials might Sita have used to insulate the wire for the rest position? Tick the three correct boxes. clear sticky tape copper wire plasticine newspaper steel wool aluminium foil 2 marks John Buchan Middle School 18
19 (c) The bulb and buzzer will only work in Sita s game when the metal ring touches the wire. Tick ONE box to show which is the correct circuit for her game. (d) To make the electrical circuit for the game, Sita uses a buzzer, a bulb and a cell (battery). Label the symbols below by writing buzzer, bulb or cell John Buchan Middle School 19
20 (e) Kalinda plays the game. She thinks the buzzer should be louder. How can Sita change her circuit so that the same buzzer makes a louder sound?... John Buchan Middle School 20
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