Heat Transfer Flashcards
How many types of heat transfer?
3.
What are the different types of heat transfer?
Conduction, convection and infrared radiation.
Describe the steps of convection?
- Bunsen Burner heats up water/gas.
- Water/gas expands and becomes less dense.
- Cooler, more dense water/gas sinks to replace warm water/gas.
Do metals conduct heat at the same rate?
No.
Is water a good conductor of heat?
No.
Is gas a good conductor of heat?
No.
Is gas a better conductor than water?
Yes.
Does convection occur within solids?
No.
Heat is a form of what?
Energy.
Infrared radiation is part of what?
The electromagnetic spectrum
Are shiny surfaces good absorbers and emitters?
No.
Which is better at absorbing and emitting heat - shiny surfaces or matte surfaces?
Matte surfaces are better.
Which is true?
A- Black is the best absorber/emitter of heat and white is the worst.
B- White is the best absorber/emitter of heat and black is the worst.
A is true.
What is a convection current?
A current created by heat causing changes in the density of a fluid or gas.
What is a conductor?
A material which lets energy flow through it easily
