Temperature vs. Heat
The total energy of moving particles in matter.
Heat (aka: Thermal Energy)
Heat always moves in this direction.
Hot to cold.
Insulators help keep things
a. hot
b. cold
c. both
Both
When particles are heated, they move faster, which can make matter _______.
Expand
True or False: All particles have space in between them and are always moving.
True.
The measure of the average kinetic energy of particles.
Temperature
Heat transfer that occurs through liquids and gases. The movement of hot air or liquid rising and cooler air or liquid sinking causes this.
Convection
Metals are good examples of this because they allow heat to pass through easily.
Conductors
Energy in motion is also called...
Kinetic energy
When a substance is heated, its particles move _______.
Faster
Temperature can be measured in these three units.
Kelvin
Celcius
Fahrenhiet
Heat transfer through the sun.
Radiation
Give an example of a conductor.
Metal (spoon).
What happens when heat transfers to a solid?
It expands.
Heat always moves from an object that is _______ to one that is _______.
Hot to cold.
High energy to low energy.
Boiling water has more _________ due to particle movement
Temperature
Lava lamps are an example of this type of heat transfer.
Convection
Give an example of an insulator.
Wood, plastic, Styrofoam, house insulation
When thermal energy transferred out a solid, liquid or gas through heat loss, particles move slower and closer. What is this called?
Thermal Contraction
Heat transfer that occurs through solids by particle collisions.
Conduction.
Larger particle have more particles therefore more ______.
Heat
The type of heat transfer that doesn’t need particles to move.
Radiation
Why are metals such good conductors?
Because metals are solids and solids are the best at conducting. Additionally, metals have something called "free delocalized electrons" which can transfer heat from one end to the other very quickly.
Name one everyday example of thermal expansion.
Jar lid loosening under hot water.
Thermometers: Liquid mercury inside a thermometer expands and rises up the tube as the temperature increases.
Hot Air Balloons: When air inside a balloon is heated, it expands and becomes lighter than cold air. This causes the balloon to lift off the ground.
Gaps between concrete side walk slabs, joints on a bridge, highway/railway tracks
The total energy of all the particles in an object is called _______.
Thermal Energy.