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Unit 04 23-24
Thermal Energy
Term | Definition |
---|---|
Kinetic energy | energy that it possesses due to its motion |
Chemical energy | energy stored in the bonds of chemical compounds (atoms and molecules). |
Thermal Energy | Energy that is generated by a source and measured by heat |
3 Ways Thermal Energy can be Transferred | Conduction, Convection, Radiation |
Conduction | The movement of heat or electricity through matter |
Convection | The transfer of thermal energy through a fluid (gas or liquid). Due to differences in density hot fluid rises while cold fluid sinks. |
Radiation | Energy transmitted in waves or a stream of particles. Travels through space and other types of matter |
The Law of Conservation of Energy | Energy can neither be created nor destroyed, only changed from one form to another. |
Examples of Conduction | Touching a metal spoon in a cup of hot liquid. Putting a heating pad on your back. Feeling the heat from a hot poker in a fire place. |
Examples of Convection | Macaroni rising and falling in a pot of boiling water. Lava lamp rising and sinking. Hot magma rising in the mantle, cold sinking. |
Examples of Radiation | Laying out in the sun at a beach. Holding your hand over a burning match without touching it. Feeling the warmth of a bonfire. |
Energy Transfer | The moving of energy from one type to another. EX: Radiant energy becomes chemical energy through the process of photosynthesis. |
Electromagnetic Energy | energy that is a combination of electrical and magnetic fields |
Ultraviolet Light | Type of light emitted from the sun that causes damage to the skin. |