Lesson 4: Heat and Work

• Heat


  Energy transferred from one subject to another due to a difference of temperature between the two objects
• Temperature


  Measure of hotness or coldness of an object
• Understanding how heat works and how it interacts with various objects is studied since it will help in making many different processes efficient
• Production of heat is the driving forces of human activity
• Heat


  Energy transferred from one subject to another due to a difference of temperature between the two objects
• Temperature


  Measure of hotness or coldness of an object
• Understanding how heat works and how it interacts with various objects is studied since it will help in making many different processes efficient
• Production of heat is the driving forces of human activity
• Energy


  Needed to perform work
• When work is done on an object

  Energy is transferred to that object
• Internal Energy


  Energy transferred to an object when work is done
• Chemical energy in food


  Converted into mechanical energy that enables you to do "work"
• Heat is the transfer of thermal energy from one object to another due to a temperature difference between them.
• Work is done when an external force causes movement against resistance.
• The first law of thermodynamics states that energy cannot be created or destroyed, only transferred.
• Heat is the transfer of thermal energy from one object to another due to a temperature difference between them.
• Conduction is the transfer of heat through direct contact with other objects, such as metals.
• The first law of thermodynamics states that energy cannot be created or destroyed, only transferred.