Energy
This term describes the ability to make things move or change.
What is energy?
When two objects are in thermal equilibrium that means they are _________ temperature.
the same (or equal)
This term describes a measure of how hot or cold something is.
Temperature
This term describes the total kinetic energy of all the molecules that make up a sample.
Thermal energy
Moving from one object to another or one place to another is called ______.
Transfer
This type of energy is often called 'energy of position' or stored energy.
What is potential energy?
During the process of reaching equilibrium, the heat lost by a hot object is ______ the heat gained by the cold object.
This instrument measures temperature by using the expansion or contraction of a liquid, such as alcohol or mercury.
Thermometer
True or false: When things get colder they are gaining cold energy.
False
If you put a cold juice box into a lunch bag, the juice warms up. What happens to the air inside the bag?
It cools down
This is a measure of the total kinetic energy of the particles in an object.
What is thermal energy?
What is true about the particles of two objects that have reached thermal equilibrium?
They have the same average kinetic energy (or temperature)
As the temperature of a gas increases, what happens to the motion of its particles?
They speed up
If you have a small cup of soup and a large pot of soup and both are the same temperature, which one has more thermal energy?
The pot of soup
f you hold an ice cube in your hand, your hand feels cold. What is happening to the thermal energy?
Heat moves from your hand into the ice cube.
This a measure of the average kinetic energy of the particles in an object.
What is temperature?
Why does heat stop flowing when thermal equilibrium is reached?
The temperatures are the same.
Thermal Expansion. Most thermometers work because liquids ______ when they get warmer and ______ when they get cooler.
expand, contract
What has more thermal energy, a thermos of hot coffee or a swimming pool of warm water?
The swimming pool
Thermal energy always moves naturally from an object with a ______ temperature to an object with a ______ temperature.
higher, lower
This law states that energy cannot be created or destroyed, only transformed.
What is the law of conservation of energy?
Equilibrium is a balanced state in which a _____ is stable, such as when two or more samples are at the same temperature.
system
Temperature is a measure of...
The average kinetic energy of the molecules in an object.
What has more thermal energy, a hot (40° C) cup or tea or a warm (20° C) bathtub full of water?
The bathtub
When two objects of different _______ are in contact they will transfer thermal energy until they reach equilibrium.
temperatures