Energy
The ability to do work
energy
Energy can be classified as either _______ or ______.
potential or kinetic
Almost every substance ________ when it is heated.
expands or get bigger
The transfer, or movement of thermal energy from one substance to another is called _____.
heat
The ability of a substance to move faster and expand without changing states is ________.
thermal expansion
energy in motion is
kinetic energy
All matter is made up of atom and molecules that are always ________.
moving
Almost every substance ______ when it is cooled
contracts or get smaller
Solids are usually heated by ________.
conduction
a ______ is the amount of thermal energy needed to raise the temperature of 1 g of water 1 degree Celsius.
calorie
stored energy is
stored energy
The total kinetic energy in a substance is called __________.
Heating a substance _______ thermal energy.
adds
__________ can occur in empty space.
radiation
Heat ALWAYS flows from a ______ substance to a _____ substance.
warmer to a cooler
potential
______ is the measure of the average kinetic energy of the particles in a substance.
temperature
Cooling a substance causes a substance to _____ thermal energy.
lose or decrease
_______ occurs when particles of a substance carry thermal energy as they move form one place to another.
convection
a ______ is any substance that releases energy when it burns.
A roller coaster heading down a hill is an example of _________ energy.
potential
Thermal energy depends on ______ and ______.
mass and temperature
faster and slower
melting an ice cube in your hand is an example of what type of heating?
conduction
A substance that allows heat to move through it easily is called a _________.
conductor