Title: Default for Course Template
Course: Transfer of Heat

Q: Energy transfers from substances with ___________ kinetic energy (temperature) to ____________ kinetic energy (temperature).
- high to low
- low to high
- same to same
- low to low
- high to high
A: high to low
If right: Great job! Objects with high kinetic energies (hot) transfer their heat to low kinetic energy objects (cold).
If wrong: Try again. What is the temperature of substances that transfer their heat (high or low....) and what is the temperature of substances that take heat (high or low)?

Q: Through conduction, thermal energy is transferred by _________________.
- direct contact of the objects.
- the movement of a liquid or a gas.
- electromagentic waves.
A: direct contact of the objects.
If right: Great job! When heat is transferred through conduction, the objects must be touching each other.
If wrong: Try again. Think about the wax lab.

Q: What happens when the particles of substances with different kinetic energies collide?
- they transfer heat back and forth
- they transfer cold back and forth
- they do not interact with each other
A: they transfer heat back and forth
If right: Great Job! Substances with different kinetic energies (temperatures) transfer heat back and forth until they are the same temperature (have the same amount of kinetic energy).
If wrong: Try again. Think about putting a metal spoon in a pot of hot water.

Q: In convection, thermal energy is transferred through ___________.
- the movement of a liquid or a gas.
- direct contact with each other.
- electromagentic waves.
A: the movement of a liquid or a gas.
If right: Great Job! When something is heated by convection, the heat source heats the liquid or gas and the liquid or gas heats the object.
If wrong: Try again. Think about how spaghetti gets cooked, or how your house gets warm.

Q: Why do the particles in a boiling pot of water move up and down?
- When the particles are hot on the bottom, they become spread out, less dense and rise to the top.
- When the particles on the top get cool, they become closer together, more dense, and sink to the bottom.
- The air bubbles at the bottom need to be popped so they come to the top.
A: When the particles are hot on the bottom, they become spread out, less dense and rise to the top. / When the particles on the top get cool, they become closer together, more dense, and sink to the bottom.
If right: Great Job! Whether you picked hot particles on the bottom spread out, become less dense and rise to the top or, cold particles on the top come closer together, become more dense and sink you are correct. These two processes combine together to form a pattern of rising and sinking in a pot of water.
If wrong: Try again. Think about particle location.

How does the sun's radiation interact with the greenhouse effect? (your answer must be at least 2 complete sentences)

What is the importance of conserving energy?

What is one way that you can conserve energy?