1. What conditions are required for heat transfer between states of matter to occur? In what direction
will heat transfer occur?
2. What are the three modes of heat transfer? How do they differ?
3. Critical Thinking: Why do gases have a lower thermal conductivity than solids?
4. Critical Thinking: A baker is cooking two loaves of bread in an oven. One loaf is in a glass pan. The other
loaf is in a metal pan that is otherwise identical in size and shape as the glass pan. Which loaf of bread
will be done cooking first? Why? Support your answer using principles of conduction, convection,
and/or radiation.
will heat transfer occur?
2. What are the three modes of heat transfer? How do they differ?
3. Critical Thinking: Why do gases have a lower thermal conductivity than solids?
4. Critical Thinking: A baker is cooking two loaves of bread in an oven. One loaf is in a glass pan. The other
loaf is in a metal pan that is otherwise identical in size and shape as the glass pan. Which loaf of bread
will be done cooking first? Why? Support your answer using principles of conduction, convection,
and/or radiation.
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Answer:
The transfer of heat can occur in three ways: conduction, convection, and radiation
The first is conduction, which occurs in solids or fluids that are at rest, such as this metal bar. The second form of heat transfer is convection, which occurs in liquids or gases that are in motion. And the third form of heat transfer is radiation, which takes place with no material carrier.
Explanation:
Gases have lower relative thermal conductivities, as their molecules are not as tightly packed as those in solids, and therefore heat transfer is highly dependent on the free movement of molecules and molecular velocity.
GLASS! Because of the way glass transfers heat in the oven, it will bake both faster and darker than most metal pans