Question

Which statements represent convection? Select two options.

Black asphalt gets very hot on a sunny day.
The movement of air in a hot-air balloon makes it rise into the sky.
A dark sand beach can burn the soles of your feet.
A spoon gets warm from sitting in a soup pot.
A house has high heating bills because the heat ends up in the attic.
A house loses heat through an exterior wall.

Answer 1

- The movement of air in a hot-air balloon makes it rise into the sky. (heated air rises — convection)
- A house has high heating bills because the heat ends up in the attic. (warm indoor air rises and carries heat to the attic — convective heat transfer)