Energy Transfer Investigation Worksheet
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Energy Transfer Investigation Worksheet
Plan the investigation
A student wraps identical beakers of cool water in different materials, then measures the water temperature over time. The beakers start at the same temperature and sit side by side in the same room.
- How does the type of wrapping material affect the temperature rise of water over 20 minutes?
- Which material looks the most comfortable?
- Why does water become warm?
- Which beaker is the nicest to use?
- Starting water temperature
- Volume of water in each beaker
- Wrapping material
- Colour of the classroom wall
Read the results
The student used 200 mL of water in each identical beaker. Starting water temperature was 10°C. All beakers were placed in a room at 24°C. Temperature was measured every 5 minutes.
Wrapping
0 min
10 min
20 min
No wrapping
10°C
16°C
20°C
Cotton cloth
10°C
14°C
17°C
Aluminium foil
10°C
15°C
19°C
Bubble wrap
10°C
12°C
14°C
- Air trapped in the bubbles is a poor conductor, slowing heat transfer into the water.
- The bubbles create cold energy that enters the water.
- Plastic always lowers the temperature of nearby objects.
- The beaker made more thermal energy disappear.
Evaluate and improve
Think about how trustworthy the results are and how the investigation could be made stronger.
3 printable pages
Page 1
Page 2
Page 3
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