Thermal Physics

Question 1

Good conductor (bad insulator) examples

Answer 1

metals

Question 2

Good insulator (bad conductor) examples

Answer 2

plastic
glass
wood

Question 3

Thermal conduction in non-metals

Answer 3

The heat causes atoms in the lattice to vibrate faster. These vibrations spread through the material cause the particles to all vibrate, and transferring the heat.

Question 4

Thermal Conduction in metals

Answer 4

Delocalized electrons carry heat energy by moving faster when heated, transferring energy throughout the metal.

Question 5

What is convection

Answer 5

process of heat transfer in fluids (liquids and gases)
- warmer particles (less dense) rise
- cooler particles (more dense) sink
creates a circular motion

Question 6

Thermal Radiation

Answer 6

Thermal radiation transfers energy without needing a medium
- happens through infrared radiation

Question 7

How does surface color affect thermal radiation?

Answer 7

Black surfaces- absorbs and emits more thermal radiation than white surfaces
White surfaces- reflect more thermal radiation and absorb less than black surfaces

Question 8

How does texture affect thermal radiation?

Answer 8

Dull surfaces- absorbs and emits more thermal radiation
Shiny surfaces- reflect more and absorb less thermal radiation