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Heat!

Across
Electrons vibrate and create electromagnetic waves which heat objects they strike
In convection the movement of fluid particles goes through a _____ going from hot to cold.
Discovered by Robert Brown when he observed pollen molecules moving in "still" water
This measures the average kinetic energy of particles in an object.
Down
Transfer of energy through direct collisions of particles
Resistance when two objects are rubbed together
The measurement of particles' motion
Synonymous with thermal energy. The sum of all kinetic energy of particles in an object