1
In heat transfer by radiation, the heat energy is transferred through space by _____ waves.
2
Convection currents may be observed when water is heated past its ____ ____.
3
____ is the measure of all kinetic energy in a sample of a material. The more kinetic energy there is, the higher this is.
4
The flow of eneryg from an object wiht a higher temperature to a lower temperature object will continue until both objects have reached thermal _____. (they are both the same temperature)
5
Heat transfer between two solid object that are in contact with each other is _____.
6
Adding layers of _____ slows the rate of heat transfer, as when people wear several layers of clothes on a cold day.
7
_____ is heat transfer between locations by the movement of fluids (liquids or gases). For example, a floor heater will warm a room because hot air rises.
8
The sun warms the Earth through the type of heat transfer called ____.
9
Heat _____ occurs through conduction, convection, and radiation.
10
A convection ____ is formed when warm fluid rises and cold fluid sinks.
11
The energy of movement is called _____ energy.
12
The atoms in all _____ are constantly moving.
13
Hot air or water rises because it becomes less _____ than the surrounding fluid.
14
Warmer fluids will _____, cool, and then sink, forming convection currents.
15
The warming of the Earth's surface occurs mostly through radiation from the _____.
