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Activity 1: Rise and Fall
When a substance like water is heated, the less dense particles rise while the denser
particles sink. Water particle rises as it is heated because its molecules become less dense and
it sinks as it cools because its molecules become denser. This continuous process is called
CONVECTION CURRENT, Convection current is caused by uneven temperature of
something. It occurs within the geosphere (plate tectonics), the atmosphere (air) and the
hydrosphere (ocean currents). It can happen in anything that is not solid and has a part that is
cooler or warmer than the other parts.
Directions: Label the diagram below showing the convection current in a container of water.
Refer your answer from the given terminologies inside the box.
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Answer:
1. container
2. convection current occurs
3. hot water
4. cold water
5. source of heat
When a substance like water is heated, the less dense particles rise while the denser
particles sink. Water particle rises as it is heated because its molecules become less dense and
it sinks as it cools because its molecules become denser. This continuous process is called
CONVECTION CURRENT, Convection current is caused by uneven temperature of
something. It occurs within the geosphere (plate tectonics), the atmosphere (air) and the
hydrosphere (ocean currents). It can happen in anything that is not solid and has a part that is
cooler or warmer than the other parts.