PHYSICS 2 MOD2

• Temperature


  it is the degree of hotness or coldness of an object
• heat


  it is the energy which travels from high temperature to low temperature.
• Heat


  Also called as thermal energy
• Thermal Physics 


  Study of temperature, heat energy and their relation matter
• Celcius to Fahrenheit Formula


  $F =$$(9/5)C +$$32$
• Farenheit to Celcius Formula


  $C =$$5/9 (F -32)$
• Calorimetry


  Measuring Heat Energy
• All matters expand when heated
• Thermal Expansion


  is the tendensy to change in shape, area and volume in response to a change in temperature
• Increasing Temperature means causes increases in volume for both solid and liquid materials
• Thermal Equilibrium


  when two objects are said to have the same temperature
• Conduction


  Tranfering heat throught solid materials
• Convection


  Transfering of heat in a gas or liquid by means of currents heated fluid
• Radiation 


  Transfering of heat through electromagnetic waves
• Calorie 


  a unit of energy or heat
• Calorie


  originally defined as the amount of heat required at a pressure of 1 standard atmosphere to raise the temperature of 1 gram of water 1° C
• Specific Heat Unit


  J/kg C
• Phase Change


  when a matter changes from one state to another
• Melting

  Solid to Liquid
• Freezing 


  Liquid to Solid
• Condensation

  Gas to Liquid
• Vaporation

  Liquid to Gas
• Sublimation


  Solid to Gas
• Deposition


  Gas to Solid
• 1 Cal


  4.186 J
• 1Kcal


  1000 cal
• 1 BTU


  788 ft lb
• 1 BTU

  252 cal
• Bristish Thermal Unit


  is the quantity of heat required to increase to raise the temperature of 1lb ( weight ) of water
• Convertion of Energy

  amount of energy leaves is equal yo the amount of energy that enters a specific closed object