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1. A home made thermometer is made from: - a test tube that is 10 cm long and with an inside diameter of 1.5 cm; - into the test tube is inserted a rubber stopper with a hole in it; - the stopper has a diameter of 1.5 cm and is 2 cm long;

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1.

A home made thermometer is made from:

- a test tube that is 10 cm long and with an inside diameter of 1.5 cm;

- into the test tube is inserted a rubber stopper with a hole in it;

- the stopper has a diameter of 1.5 cm and is 2 cm long;

- a narrow glass tube 20 cm long is pushed through the hole in the stopper;

- this glass tube goes half way down the test tube.

The test tube and narrow glass tube have red water in them.

The red water only comes half-way up the narrow tube.

DRAW the homemade thermometer to scale.


3.

In this experiment temperature is being measured at different times of day.

110

110

110

110

110

110

100

100

100

100

100

100

90

90

90

90

90

90

80

80

80

80

80

80

70

70

70

70

70

70

60

60

60

60

60

60

50

50

50

50

50

50

40

40

40

40

40

40

30

30

30

30

30

30

20

20

20

20

20

20

10

10

10

10

10

10

0

0

0

0

0

0

-10

-10

-10

-10

-10

-10

TAKE READINGS from the thermometer and watch and put them into the table below.

Temperature in degrees Celsius

Time of day


26

28

18

14

10

9

8

23

26

28

30

15

4.

A thermometer was put in a room in a house with a metal roof.

Temperatures were taken every two hours, for one day

The temperatures at different times are shown in the table below.

morning

afternoon/evening

time of day

12

Time of day

2

10

2

6

4

6

8

4

8

10

12

temperature in

degrees Celsius

PLOT a bar chart of the results on the graph paper provided below.

Temperature in degrees Celsius

30

20

10

0

2

4

6

10

12

2

6

10

12

8

4

8

morning

afternoon

Time of day

PREDICT the pattern of temperature change during one day in the winter

by adding to your bar chart.


5.

The temperature changes in two different houses are compared in this graph.

One house has a thatched roof the other has a metal roof.

Temperature in degrees Celsius

30

house with

thatched

roof

20

house with

metal

roof

10

time of day

6

12

2

4

8

12

2

4

6

8

10

10

morning

afternoon

DESCRIBE in your own words what the bar chart shows.


6.

Thabiso thought that a room on the East side of his house

was hotter than a room on the West side.

Design an experiment over a 24 hour period to find out if he was correct.

LIST the apparatus you need

LIST the variables you will measure

HYPOTHESISE the results do you expect?

- during the morning

- during the afternoon

- during the evening

Do you think Thabiso was correct? GIVE YOUR REASONS.


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