Heat Notes
Heat is the movement/energy of molecules of matter. All matter has heat because in any phase of matter the molecules and atoms are moving...that's heat. But heat is not the same thing as temperature. Temperature is the way heat is measured.
Heat moves around in 3 ways: conduction, convection and radiation. Conduction is the transfer of heat by direct contact. Walking on asphalt in the summer with bare feet is conduction because the warm asphalt is transferring its heat directly into your bare feet by direct contact. Convection is the trnasfer of heat from one place to another by the use of liquids or gases. The heater in your house heats air and the air carries that heat to you...that's convection. Our weather is the product of convection and the deep ocean currents are due to convection. Radiation is the only form of heat transfer that can travel in empty space. It is heat transfer by waves (infrared). It can travel through air or water too. When you warm yourself in the suns light, you are being warmed by radiation.
There are 3 temperature scales you need to understand: Fahrenheit, Celsius and Kelvin. Fahrenheit is the temperature scale we use here in the US. Celsius is used around the world and in science labs. And, Kelvin is a temperature scale that is based on absolute zero (the theoretical temperature where all molecular motion stops...NO HEAT).
Heat moves around in 3 ways: conduction, convection and radiation. Conduction is the transfer of heat by direct contact. Walking on asphalt in the summer with bare feet is conduction because the warm asphalt is transferring its heat directly into your bare feet by direct contact. Convection is the trnasfer of heat from one place to another by the use of liquids or gases. The heater in your house heats air and the air carries that heat to you...that's convection. Our weather is the product of convection and the deep ocean currents are due to convection. Radiation is the only form of heat transfer that can travel in empty space. It is heat transfer by waves (infrared). It can travel through air or water too. When you warm yourself in the suns light, you are being warmed by radiation.
There are 3 temperature scales you need to understand: Fahrenheit, Celsius and Kelvin. Fahrenheit is the temperature scale we use here in the US. Celsius is used around the world and in science labs. And, Kelvin is a temperature scale that is based on absolute zero (the theoretical temperature where all molecular motion stops...NO HEAT).