BUILDING CIRCUITS Build the following circuits then follow

BUILDING CIRCUITS Build the following circuits, then follow the instructions in the box next to the picture. Then draw the circuit and answer the questions in full sentences in your book. Circuit 1 1. Note the brightness of the bulbs. 2. Remove bulb 1, what happens? 3. Remove bulb 2 does the same thing happen? 4. Why does this happen? 1 2 Circuit 2 1. Remove bulb 1, what happens? 1 2 Circuit 3 2. Replace bulb 1 & remove bulb 2, what happens? 3. Why do you think this happens? 1. Note the brightness of the bulbs. 1 2 2. Again remove bulb 1, is bulb 2 brighter or dimmer? 3. Replace bulb 1 and remove bulb 2, does bulb 1 become brighter or dimmer? 4. Why do you think this happens? Circuit 4 1. How bright are the bulbs when you add the third one? 2. How many bulbs can you connect like this and still get them to glow? 3. Are the bulbs brighter or dimmer in this kind of circuit than in circuit 1? Aw 02/99

Circuits - Homework Look at this circuit diagram: There is an electric current flowing through the battery and through the wires and the bulb. 1. Draw this circuit in your book and mark arrows on it to show where the current is and which direction it is flowing in. Scientists have discovered that electricity is made up of charge. Which is carried through wires by small particles called electrons. An electric current is rather like water flowing through a pipe. Look at this diagram of the central heating pipes in house. Draw the picture into your book and answer the questions in sentences. 3. Which part of the diagram do you think is like a battery? 4. Which part of the diagram do you think is like a bulb? 5. Which part of the diagram do you think is like a wire? Aw 02/99