You are testing materials to see whether they conduct electricity. You have built a circuit of a battery and two crocodile leads which you will attach to the material. What is missing?
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A switch
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A light bulb, buzzer or motor
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A parallel circuit
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Nothing is missing
Q.2.
If you were carrying out an investigation into the effect of light on seed germination, how would you measure the dependent variable?
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By how tall the shoots grow in a certain number of days
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By the number of days it takes the seeds to germinate
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By the number of seeds which germinate after a certain number of days
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Either the number of days it takes or by the number of seeds which germinate
Q.3.
If you were carrying out an investigation into the effect of light on seed germination, which variable would you change?
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The amount of water you give the seeds
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The temperature of the places where you've left the seeds
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The amount of light to which the seeds are exposed
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The types of seeds which will be germinating
Q.4.
You would like to investigate the effect of water resistance on different shapes moulded from plasticine. You are dropping the shapes in a beaker of water. What is the dependent variable?
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The amount of time it takes the shape to reach the bottom of the beaker
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The amount of water in the beaker
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The mass of the plasticine shape
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The colour of the plasticine
Q.5.
If you were testing the effect of water resistance on three different plasticine shapes, which variable would you be changing?
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The mass of the plasticine shape
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The shape of the plasticine
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The amount of water in the beaker
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All of the above
Q.6.
If you investigated the effect of water resistance on different shapes moulded from plasticine by dropping them in a beaker of water and timing how long it takes them to reach the bottom, what would happen if you changed the amount of water, the shape of the plasticine and the mass of the different shapes?
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Your results would all be the same
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Your investigation would take too much time
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The investigation would not be a fair test
100%
You wouldn't have enough time to display your results
Q.7.
If you were testing materials to see whether they conduct electricity using a circuit and bulbs, what would be the dependent variable?
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The length of the crocodile leads
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How long the investigation takes
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The strength of the battery
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Whether electricity passes through the material
Q.8.
If you were carrying out an investigation into the effect of light on seed germination, what would be the dependent variable?
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Whether the seeds germinate
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How many seeds you plant
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How tall the plants grow
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How much light you give the seeds
Q.9.
What unit of measurement would you use to record the amount of time it takes different shapes to reach the bottom of a beaker of water?
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Centimetres
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Degrees Celsius
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Seconds
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Millilitres
Q.10.
If you were testing materials to see whether they conduct electricity using a circuit and bulbs, what variable would you be changing?
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The strength of the battery
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The number of bulbs
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The material
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The time it takes the electricity to complete the circuit
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