Physics Chapter 21
Temperature, Heat, and Expansion
Terms and Objectives
New Terms in Ch 21:
|specific heat capacity
Chapter 21 Objectives:
After completing chapter 21, you should be able to:
- ... discuss the similarities and differences between the Fahrenheit, Celsius, and Kelvin temperature scales.
- ... associate the temperature of a substance with the average linear kinetic energy of its molecules.
- ... distinguish between heat and internal energy.
- ... define "thermal contact", and describe what happens when two objects are placed in thermal contact.
- ... discuss the requirements for thermal equilibrium between two objects.
- ... discuss the calorie, kilocalorie, Calorie, and Joule as measures of heat energy.
- ... discuss what it means for a substance to have a high or low specific heat capacity.
- ... state that water has a high specific heat, and discuss consequences of this fact.
- ... solve simple numerical problems involving heat transfer using the equation .
- ... recognize that substances generally expand when heated.
- ... discuss the relative rates of expansion of solids, liquids, and gasses.
- ... explain what happens to a heated bimetallic strip.
- ... discuss the unusual expansion behavior of water, and recognize that water reaches its maximum density at 4oC.
- ... explain why bodies of water freeze from the top downward
last update January 28, 2006 by JL Stanbrough