What is the Effect of Heat Energy on the Asthenosphere (Upper Mantle)?
Follow Up Questions:
1. Describe what happened to the fluid when heat (the candle) was added
beneath the jar? Explain why you think this happened?
2. Describe what happened to the fluid near the upper surface of the jar
(parallel to the table)? Why do you think this happened?
3. Explain the motion of the fluid as it reached the sides of the jar. Explain why
you think this happened?
4. You recently learned that substances that are dense sink and those that are
less dense rise. Using this knowledge and the motion you observed in the jar,
a. Explain how the addition of heat energy affects the density of a fluid.
b. Explain how the loss of heat energy affects the density of a fluid.
5. Complete the following matching assignment:
a. Increase in density ____________
1. speed up and expand (spread apart)
occupying more space
b. Decrease in density ___________
2. slow down and condense (come
together) occupying less space
c. Addition of heat energy (heating)
causes molecules to __________
3. More matter in a given volume causes
substance to sink
d. Loss of heat energy (cooling) causes
molecules to ______________
4. Less matter in a given volume causes
substance to rise
6. (pg. 14-17 ) Heat energy cycles or moves from warm areas to cooler areas
through our planet. This movement of energy from warmer to cooler objects
is called heat transfer. Name and define the type of heat transfer
observed in the heated fluid.