Heat Transfer and Thermodynamics #2

Transfer of heat by means of electromagnetic waves

• conduction

• convection

• radiation

Transfer of heat by contact and collisions between the molecules in a substance.

• conduction

• radiation

• convection

Warm air rises and cold air sinks demonstrates what?

• conduction
• convection
• radiation
• refrigeration

The average kinetic energy of the atoms or molecules in a substance is directly related to

• heat

• specific heat capacity

• temperature

• Brownian Motion

What is heat?

• the amount of thermal energy in an object

• an object's internal kinetic energy

• the transfer of thermal energy from one object to another

• the amount of energy needed to raise the temp of an object

In this method of heat transfer heat is carried by a moving medium, like water or air.

• Conduction
• Convection
• Radiation
• this is impossible

The property of a thermometer that allows it to indicate temperature is

• thermal expansion
• heat capacity
• thermal equilibrium
• conduction

If the pressure inside a container of gas has decreased, it must have been caused by...

• adding heat to the gas or increasing the volume of the gas

• removing heat from the gas or decreasing the volume of the gas

• adding heat to the gas or decreasing the volume of the gas

• removing heat from the gas or increasing the volume of the gas

The 1st law of Thermodynamics

• Energy can not be created or destroyed. It just changes forms.

• Energy can only be created by the sun

• Some energy is lost to the environment.

Specific Heat

• the amount of energy it takes to raise one gram of a substance by one degree Celsius

• The internal energy of an object

• The measure of the kinetic energy of an object's molecules