Heat Transfer
Plate Tectonics
Energy
Thermal and kinetic energy
100
Heat transfer through touching objects
What is conduction
100
where plates split apart
divergent boundary
100
The unit for food energy
Calories or kilocalories
100
What is kinetic energy?
The energy from movement
200
Heat transfer through fluids
What is convection
200
where plates come together
convergent boundary
200
The substance that will take the longest to heat up
Helium or hydrogen
200
Which has more thermal energy?
A B
Cup A
(more molecules, more thermal energy)
300
Heat transfer through electromagnetic waves
What is radiation
300
where plates move along each other
transform boundary
300
The amount of energy needed to heat 1 g of an object by 1 degree celsius
specific heat
300
What happens when two objects of different temperatures reach the same temperature over time
thermal equilibrium
400
During convection, as fluids heat up, density.... (increases or decreases)
Decreases
400
What do scientists use to study the movement of tectonic plates? (Think California)
Seismographs (or earthquakes)
400
What be better to cook things quickly? Iron or steel?
Iron (smaller specific heat)
400
Which has more average kinetic energy
Cup A (95C) Cup B (100 C)
Cup B
500
This happens in a pot of boiling water. Water is heated at the bottom and rises,replacing the cooler,denser water at the top. This repeats itself over and over again
what are convection currents
500
how scientists measure the speed of the tectonic plates
they use satellites
500
The equation to measure heat energy
Q=mcT
500
Sand will heat up faster than water does because it has... a (lower/higher) specific heat capacity
Lower specific heat