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Movement in Water
Reference chapter
Question 1
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PDF version
A student carried out an experiment to find out how long it takes for
differently shaped models to fall one metre through a thick liquid called paste.
Five models were tested, each with a different shape. Each model was tested
three times.
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Shape 1 |
Shape 2 |
Shape 3 |
Shape 4 |
Shape 5 |
Results
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Shape |
Time taken to move through one metre of paste (s) |
| |
Trial 1 |
Trial 2 |
Trial 3 |
1 |
12 |
11 |
12 |
2 |
9 |
9 |
7 |
3 |
13 |
13 |
12 |
4 |
5 |
6 |
6 |
5 |
10 |
9 |
9 |
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(a) Complete the
table opposite (NB. To find the average speed in metres/second, you have
to divide 1 metre by the average time in seconds.) |
Shape |
Average time
(s) |
Average speed
(m/s) |
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1 |
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2 |
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3 |
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4 |
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5 |
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(b) Which of the shapes moved through the liquid the fastest? Give an explanation for this result. |
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(c) Study the drawings of three different fish. Which of these fish will swim through the water (i) the fastest? (ii) the slowest? |
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flat fish |
angel fish |
herring |
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© Paul Billiet & Shirley Burchill 2009 |
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