Question

choose the best answers.
2.3) ______ is the movement of heat between touching objects.
a. conduction
b. convection
c. radiation
2.4) ______ is the circular movement of heat inside a liquid or a gas.
a. conduction
b. convection
c. radiation

Explanation:

2.3)

Conduction is heat transfer between touching objects (direct contact). Convection is heat transfer in fluids (liquid/gas) via movement, and radiation is heat transfer through electromagnetic waves (no medium). So for heat between touching objects, it's conduction.

Convection involves circular movement (convection currents) of heat in liquids or gases. Conduction is direct contact, radiation is via waves. So for circular heat movement in liquid/gas, it's convection.

Answer:

A. Conduction

2.4)