Heat Flashcards
Which method of heat transfer is most effective in a solid?
Conduction
Which method of heat transfer can pass through a vacuum?
Heat radiation
What are the methods of heat transfer?
Conduction, Convection and heat radiation
What is heat attracted to?
Back and dull
What does heat retract from?
Light and shiny
Which material is best to conduct heat?
Copper
What best describes convection?
Fluid is heated -> density increases -> fluid rises -> fluid cools
Heat transfers from…
Hotter to cooler areas
What actual property of a material is measured by a thermometer?
The heat temperature
Why do bimetallic strips bend?
One metal expands more than the other.
Which three factors determine the amount by which a solid sample of a material will expand as it is heated?
-expansion rate
-the temperature change
-the material properties
Explain, in terms of particles and the spaces between them, what happens as a material heats up.
The particles vibrate more rapidly making the material expand because the spaces in between the particles become larger and gain energy.
Heat rises. True or False.
False
Convection
expands, less dense, rises
Conduction
energy transferring through solid objects via molecules
