Title: Describe how resistance is affected in thermal systems at extremely high and low temperatures in materials, including superconductors.
Course: Principles of Technology I (03153-I) > Section: UNIT 4: RESISTANCE

Description should state that

- thermal resistance depends upon the material’s composition and conductivity
- thermal resistance is the ratio of temperature drop to heat-flow rate
- materials with high thermal resistance are used to insulate an object
- heat flows from an area of high temperature to an area of low temperature
- resistance increases at extremely high temperatures because of expansion and an increase in surface area
- resistance decreases at extremely low temperatures because of contraction and a slowing of molecular motion.

Process/Skill Questions:

- What is considered an extremely high temperature in Fahrenheit? An extremely low temperature?
- What is considered an extremely high temperature in Celsius? An extremely low temperature?
- Why does an object speed up or slow down when exposed to extreme temperatures?