SC-1426
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 describes how heat reaches the top water?
Which statement best describes how heat reaches the top water?
- Convection currents in the water carry heat from bottom to top.
- Conduction through the glass walls heats the top water only.
- Radiation from the heater directly heats only the surface water.
- Evaporation at the surface transfers heat to the deeper water.
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