7/31/2019 Heat Exercise

1/2

Friday 13/07/2012

Exercise :

The bar chart in diagram 1 shows the temperature of a beaker ofwater at different times.

Temperature C

60 -

50 -

40 -

30 -

20 -

10 -

0 2 4 6 8 10 12 14 16 Time

(a) What is the trend of changes in the temperature of the water shown

by the bar chart?

_____________________________________________________

_

(b) State one reason (inference) for the changes in the temperature

from .

i. 2 to 8 minutes

________________________________________________

ii. 8 to 16 minutes

________________________________________________

(c) State what is observed ( responding variable).

7/31/2019 Heat Exercise

2/2

_____________________________________________________

(d) Predict the temperature of the water at the 20 th minutes.

_____________________________________________________

_