Question

which two of the following correctly describe how thermal energy is transferred in this scenario?
a thermal energy is transferred from the burner to the pot through radiation.
b thermal energy is transferred from the bottom of the pot to the soup through conduction.
c thermal energy is distributed within the soup through convection.
d thermal energy is transferred from the soup to the spoon through radiation.
e thermal energy is transferred from the soup to the air above it through convection.

Explanation:

• Option A: Thermal energy transfer from burner to pot is through conduction (direct contact), not radiation. So A is wrong.
• Option B: Thermal energy transfer from pot (solid) to soup (liquid) is through conduction (molecule - to - molecule transfer in solids and also in adjacent liquids in this case).
• Option C: Thermal energy distribution within the soup is through convection (liquid movement due to density differences caused by heating).
• Option D: Thermal energy transfer from soup to spoon is through conduction (contact between soup and spoon), not radiation.
• Option E: Thermal energy transfer from soup to air above is through convection (air movement as it gets heated by the soup).

Answer:

B. Thermal energy is transferred from the bottom of the pot to the soup through conduction; C. Thermal energy is distributed within the soup through convection.