What physical process results in the convection of thermal energy?
a. Collisions between the particles in a material.
b. The movement of a fluid through a space.
c. The energy exchange when a liquid becomes a gas.
d. The energy transferred by electromagnetic waves traveling between objects.
e. Brownian motion.
Question 2
In this photo, the left side of a ceramic dish is ice-cold while the right side is very hot. What property of a ceramic, at the atomic/molecular level, would make it a poor heat conductor compared with a copper dish?
a. Ceramics fall apart at high temperatures.
b. Only colliding and vibrating atoms transfer their motion to each other and cause conduction.
c. The electrons in the ceramic, which is an electrical insulator, are not as free to move over large distances to help transfer thermal energy.
d. Only electrons that conduct electric current can transfer energy and cause heat conduction.
e. Only metals conduct heat.
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