Show:
Solids
Liquids
Gas
Energy
Matter
100
Which of these would most likely allow convection to occur?solids, liquids or gases
solids
100
What form is matter when it has a definite volume, but no definite shape?
liquid
100
How does air circulate in a forced-air heating system?
by the process of convection
100
How does an insulator work?
By reducing the flow on energy
100
What measures the average kinetic energy if particles in any object?
temperature
200
What can liquids and gases do that solids cannot? (Hint: think "definition")
flow!
200
What kind of heating system is composed of a closed metal container with hot water or steam?
radiator
200
What form of energy can be transferred into thermal energy without work being done?
radiation
200
What do these items have in common? Aluminiumn, copper, silver and air..
Only one is an insulator - air!
200
What is specific heat?
The amount of energy needed to raise the temperature of 1kg of material to 1 degree Kelvin.
300
How does conduction transfer energy?
by the touching of particles, for example, in a solid; energy is then transferrred to the object coming into contact with it.
300
What is energy of motion?
Kinetic Energy
300
What form of energy transferr is "wind"?
convection
300
Which one of these does not require matter in order to transfer energy? combustion, radiation, conduction or convection...
radiation
300
What is the total energy of the molecules in a material?
thermal energy
400
The energy needed to change a solid to a liquid is the __________________.
Heat of fusion
400
What form of matter is electrically charged?
plasma
400
What type of heating system is most common in homes?
forced-air
400
What process causes engine fuels to burn?
combustion
400
What is produced when Kinetic Energy and Potential Energy are added?
Thermal Energy
500
How is heat transferred from the fireplace to the room?
convection
500
The energy needed to change a liquid to a gas is the ______________________.
heat of vaporization
500
Which of these devices converts thermal energy into mechanical energy? conductor, refrigerator, heat engine or heat mover.....
heat engine
500
What state of matter is plasma most similiar to?
gas