Radiation

• The heat from the sun travels through space through electromagnetic waves such as infrared, UV light, and visible light.  
• Black objects ABSORB RADIATION efficiently and light colored objects tend to REFLECT RADIATION efficiently. 
• Radiation doesn't require matter to transfer thermal energy.
• All Objects constantly absorb and emit radiation at the same time.
• The rate of heat transfer depends on the temperature difference between two objects, with higher temperatures resulting in faster heat transfer and increased surface area.
• Specific heat is the amount of heat to raise the temperature of one gram of a substance by one Celsius degree.
• The transfer of energy in the form of electromagnetic waves
• Examples of radiation are the heat from a light bulb, and campers sitting close to a campfire when they feel cold.
• Energy from the sun reaches Earth in the form of an electromagnetic wave called infrared radiation.
• To get through empty space, heat has to be transferred in a form of radiation.
• The hotter an object=more radiation
• Heat energy can also be transferred without particles (travel through a vacuum)