Thermal Energy #1
Name a substance that is a good conductor.
Possibilities:
Silver
Aluminum
Iron
Heat transfer occurs only from __________ objects to __________ ones.
Warmer objects to Colder objects.
A material that conducts heat poorly is called a(n) __________________.
insulator
The movement of thermal energy from a warmer object to a cooler object is called _______________.
heat
The transfer of energy by electromagnetic waves is called ___________________.
Radiation
This is a name for the average amount of kinetic energy in the particles of a substance
thermal energy
solid, liquid, gas
Heated air moves from baseboard heaters to the rest of a room in a process called ___________________.
Convection
Trapped air is a good _______________ because it reduces heat transfer.
Insulator
As the thermal energy of matter ________________, its particles usually spread out, causing thermal expansion.
Increases
During_____________, heat is transferred by the movement of currents within a fluid.
Convection
Which is more dense, warm air or cold air? Why?
A measure of the average ____________ energy of the individual particles in an object is called temperature.
Kinetic
The ___________ particles an object has at a given temperature; the more thermal energy it has.
More
If two glasses of water are at the same temperature, the average kinetic energy of the particles of water in each glass is the _______________.
Same
This is the temperature scale that is always used in science class.
Celsius
Describe how conductors and insulators differ. Include an example of each.
DOUBLE JEOPARDY!
A material that prevents the flow of energy is called an insulator. A material that permits the flow of energy is called a conductor.
An example of an insulator would be air, wool, plastic, etc.
An example of a conductor would be silver, aluminum, iron, metal
Heat is transferred from one particle of matter to another within an object or between two objects that come in contact is a process called ____________________
Conduction
A student lists three temperature measurements: 100°F, 100°C, and 100 K. Of the three measurements, Which is the highest temperature?
100°C
Joints in train tracks are designed with extra space to allow for __________________ in hot weather.
Thermal Expansion
Name freezing and boiling points on the Celsius scale.
0 degrees and 100 degrees
The ice melted in the metal pan quicker than the ice on the paper plate. Why?
Metal is a better conductor of heat.
Explain what an increase in the total energy of the particles in an object will result in?
An increase in the total energy of the particles in an object will result in an increase in the thermal energy of the object.
If heat is transferred from object A to object B, what happens to the temperature of object A?
It decreases.
Explain why the water in a filled bathtub may be at the same temperature as water in a teacup, but the water in the bathtub has more thermal energy.
Even though the water in a filled bathtub may be at the same temperature as water in a teacup, the water in the bathtub has more thermal energy because it contains a greater number of water molecules.