Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids
Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids
Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids
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1. Describe the relationship between the time of burn <strong>and</strong> the<br />
number of firelighters.<br />
The greater the number of firelighters, the greater the burn<br />
time<br />
2. Use your graph to find out how long ten firelighters would<br />
burn for.<br />
30 min<br />
3. Your mom leaves the iron on <strong>and</strong> it is next to a window with a<br />
curtain blowing in the wind. Explain to her why this is<br />
dangerous <strong>and</strong> what she should rather do.<br />
The curtain could blow against the hot iron <strong>and</strong> catch fire <strong>and</strong><br />
burn the house down. The wind blowing in from the window<br />
would also help to spread the fire. She should rather turn the<br />
iron o when not using it <strong>and</strong> close the window so the curtain<br />
does not blow against the iron.<br />
28 Energy <strong>and</strong> Change
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