Convección

The video explains how heating a liquid or gas reduces its density, causing it to rise compared to cooler surrounding materials. This principle is demonstrated through convection, such as the heat felt from a radiator. On a larger scale, convection significantly impacts meteorology and climate, influencing weather patterns and climate systems.

What happens to the density of a liquid or gas when it is heated?

• It becomes less dense.

• It remains the same.

• It evaporates immediately.

• It becomes more dense.

Why does heated liquid or gas rise compared to its surroundings?

• Because it cools down.

• Because it solidifies.

• Because it becomes less dense.

• Because it becomes heavier.

How is heat transferred when you feel warmth from a radiator?

• By evaporation.

• By convection.

• By radiation.

• By conduction.

Which process is responsible for the heat you feel from a radiator?

• Insulation

• Radiation

• Convection

• Conduction

What role does convection play on a larger scale?

• It alters the gravitational pull.

• It changes the Earth's rotation.

• It influences meteorology and climate.

• It affects the color of the sky.