________ such as wood chips and other plant waste contains energy.
Biomass
100
Temperature is a measure of ________________ of the particles in an object.
the average kinetic energy
100
What are the 3 types of heat transfer?
conduction, convection, radiation
100
The energy of a system that is exposed to friction may _______________. But overall, energy in the system in neither lost nor created. In fact, the heat produced by friction is _________ that energy is conserved.
decrease; evidence
100
What is a state?
the form in which matter exists
200
What are all of the types of energy called? List them.
Nuclear, Thermal, Electrical, Electromagnetic, Chemical, Potential, kinetic, and mechanical
200
0 Kelvin = what degrees Celsius?
-273
200
when does heat transfer stop
when all objects reach the same temperature
200
Changes of state in a system are caused by changes in _______________________.
Thermal Energy
200
The temperature at which a solid freezes and the temperature at which liquid boils is called what?
freezing point and boiling point
300
When heat is added to a system, the temperature of ______________ in the system ____________. When heat is removed from the system, temperatures __________. If enough heat is added to or removed from a system, substances in the system will change _________.
substances; increase; decrease; state
300
What is the total energy of all the particles in an object?
Thermal energy
300
What is a convection current?
A circle cycle of heat on one side going one way and cool air on the other side going the other way. Forming a circle.
300
List the most particles to least particles in a solid, liquid, gas. in order
solid=most
liquid=middle
Gas=not so much
300
Potential energy + Kinetic Energy = what
Mechanical Energy
400
What has a definite shape but no definite volume.
Liquid
400
Why does a 1-Liter pot of tea at 75 degrees Celsius have more thermal energy than a 0.2-Liter mug of tea at 75 degrees Celsius?
Because the pot contains more tea particles.
400
What is an example of conduction?
Pizza in an oven
400
Particles called _________ make up ALL objects.
atoms
400
The TOTAL kinetic and potential energy of all the particles in an object is called what?
Thermal energy
500
What is the series of transformations in a car?
electrical energy produces a spark.
The thermal energy of the spark releases
chemical energy in the fuel, causing the fuel to expand as it is broken down into smaller particles.
The expansion of the fuel produces pressure on parts of the car.
The increased pressure eventually causes the wheels to turn,
Transforming chemical energy into mechanical energy
500
If two 1-liter pots of tea have two different temperatures, the pot with the _________ temperature has ________ thermal energy.
higher; most
500
What is an example of Convection and Radiation?
Convection: Boiling pot of water
Radiation: Hands above a fire
500
Thermal energy depends on what?
the objects temperature, the number of particles in the object,and how those particles are arranged.
500
What is the definition of temperature?
a measure of how hot or cold something is compared to a reference point. (such as the freezing point of water).