Heat Flashcards
when a substance is heated, the energy is turned into…
- some = stored as potential energy
- rest = kinetic energy
What is kinetic energy?
the energy of movement.
what happens to particles if the temperature increases?
particles move faster (gain kinetic energy)
what happens to particles if the temperature decreases?
particles move slower (lose kinetic energy)
What is temperature
a measure of average kinetic energy of particles
measured using thermometer
what happens if a liquid is heated?
It expands
what happens if a liquid is cooled?
It contracts
What are the 3 different temperature scales
Fahrenheit, Celsius and Kelvin
What is heat transfer?
When heat flows from an area of high temperature to areas of lower temperature
What happens with heat transfer if there is a big difference in temperature?
The flow of heat is faster (aka heat transfers quicker)
What are the 3 types of heat transfer?
conduction, convection and radiation
What is conduction?
the transmission of heat through a conductor
What in convection
warmer particles rise and cooler particles sink
What is a convection current
When convection circles in an endless loop
What is radiation
energy that comes from a source and travels through space at the speed of light
heat waves from the sun
