SC-1389
Convection
Lower Sec Science · Secondary 2 · Medium · Convection
A beaker of water is heated from the bottom using a Bunsen burner. After some time, the water at the top also becomes hot. Which statement best describes how heat reaches the water at the top?
- Warm water rises and cooler water sinks, forming convection currents.
- Heat is conducted directly from the flame to the water at the top.
- Heat is transferred only by radiation from the flame to the surface.
- The water at the top heats up because hot air above it warms it.
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