Chapter 1 - Heating and Cooling Flashcards
1
Q
What are the 3 processes of energy transfer?
A
Conduction
Convection
Infrared Radiation
2
Q
What energy transfer can happen through a solid?
A
Conduction
3
Q
What energy transfer can happen through a fluid?
A
Convection
IR Radiation
[To a lesser extent - conduction]
4
Q
What is a fluid?
A
A gas or liquid
5
Q
Why is conduction faster in metals vs non-metals?
A
Free electrons can carry energy from the source to the other end of the object
6
Q
Why is conduction slow in insulators?
A
Electrons are NOT free, and energy is only transferred through vibration of particles directly to their neighbors
7
Q
Describe convection in terms of DENSITY
A
When heated, the fluid becomes less dense,
then rises in the fluid,
it cools and becomes more dense,
and as a result sinks
