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Movement
in Water
Reference
chapter
Question
1
HTML version
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.
 |
 |
 |
 |
 |
| Shape 1 |
Shape 2 |
Shape 3 |
Shape 4 |
Shape 5 |
Results
|
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 |
|
(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) |
|
1 |
|
|
|
2 |
|
|
|
3 |
|
|
|
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. |
| (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 2008 |
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Open Door Web Site