Exploring Convection Currents in Lava Lamps

The video explains how convection currents work in a lava lamp. It describes the components of a lava lamp, including glass, water, wax, and a light bulb. The light bulb heats the wax, causing it to become less dense and rise. As it moves away from the heat source, the wax cools, becomes denser, and sinks. This process creates a continuous cycle known as a convection current.

What are the main components inside a lava lamp?

• Water and oil

• Water and wax

• Oil and wax

• Water and sand

What role does the light bulb play in a lava lamp?

• It heats the water

• It provides light for decoration

• It cools the wax

• It heats the wax

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Why does the wax rise in the lava lamp?

• It evaporates

• It solidifies

• It becomes less dense than water

• It becomes more dense than water

What happens to the wax as it moves away from the light source?

• It heats up

• It evaporates

• It becomes less dense

• It cools down

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What causes the wax to sink back down in the lava lamp?

• It solidifies

• It becomes less dense

• It becomes more dense

• It evaporates

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What is the term used to describe the cycle of rising and sinking wax in a lava lamp?

• Density cycle

• Heat transfer

• Convection current

• Thermal cycle