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  1. 1. Piet has been making tea at home. He has tried an experiment to see how much time it takes to boil the kettle to make the tea. Using different amounts of water he has got the results in the table shown below. Number of cups of water in the kettle 1 2 3 4 5 Time for the kettle to boil in seconds 60 110 160 210 260 PLOT a BAR CHART of Piet's results on the axes below. Time for kettle to boil in seconds 300 250 200 150 100 50 0 one two three four five Cups of water in the kettle

  2. 2. Time for kettle to boil in seconds 300 250 200 150 100 50 0 one two three four five Cups of water in the kettle INSPECT the bar chart carefully. Pay attention to the numbers. DESCRIBE in your own words what this bar chart shows

  3. 3. Using the apparatus shown, DESCRIBE how you would carry out Piet's experiment.

  4. A pot for four cups of tea or four individual cups of tea ? 4. DRAW DIAGRAMS to illustrate the energy used In making a pot of tea for four cups energy is used to heat the water and the kettle. In making four individual cups energy is used to heat the water but the kettle is heated four times.