SC-1431
Convection
Lower Sec Science · Secondary 2 · Medium · Convection
A student places a beaker of coloured hot water in a basin of clear cold water. After a few minutes, coloured streaks are seen rising in the beaker and cooler water moves down. Which process mainly causes this movement in the water?
- Conduction, because particles only vibrate on the spot.
- Convection, because warmer water rises and cooler water sinks.
- Radiation, because heat is transferred without any particles.
- Expansion, because the water expands when heated and stays at the bottom.
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