Index |
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Physical Sciences
[ Answers ] |
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The Earth
Put a circle around the correct answer:
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| The Earth orbits the sun once a |
| year |
day |
month |
minute |
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| The Earth spins on its axis once every |
| year |
day |
month |
minute |
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Is the sun a planet or a star?
| planet |
star |
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Magnets
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John has three magnets - a horseshoe magnet, a bar magnet and a round magnet. He wanted to see which was the strongest. Describe a simple experiment that John could do.
Use this as a guide to help you:
Materials used.
Method
Here is John's results table
| magnet | number of objects held |
| horseshoe | 5 |
| bar | 9 |
| round | 7 |
According to John's results: -
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Which is the strongest magnet?
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Explain why this is the strongest magnet
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In his first experiment, John used plastic paper clips. Explain why this experiment did not work.
Circuits
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 What's wrong with this circuit?
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Draw a circuit with a switch, a buzzer and a battery so that the switch is be used to turn the buzzer on and off.
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Here are two circuits:
 
Which bulb is the brightest?
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Why?
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Which type of material is a good conductor of electricity?
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Why don't we get an electric shock when we touch a plug?
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Copyright©1998 - British Telecommunications plc |
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Last modified on: Tuesday, June 9, 1998.
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