SC-1437
Convection
Lower Sec Science · Secondary 2 · Hard · Convection
A heater is placed at the bottom of a fish tank. After some time, the water at the top of the tank also becomes warm.
Which statement best explains how the water at the top is heated?
Which statement best explains how the water at the top is heated?
- Heat is transferred by conduction through the water only.
- Warm water rises and cooler water sinks, setting up convection currents.
- Heat is transferred only by radiation from the heater to the top.
- The heater heats the glass, which then heats only the top water by conduction.
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