TERM: 2nd TERM
SUBJECT: BASIC SCIENCE
CLASS: JSS 2
WEEK TEN DATE: ………………..
TOPIC: THERMAL ENERGY II
Temperature is a measure of the average amount of kinetic energy possessed by the particles in a sample of matter. The more the particles vibrate, translate and rotate, the greater the temperature of the object. You have hopefully adopted an understanding of heat as a flow of energy from a higher temperature object to a lower temperature object. It is the temperature difference between the two neighboring objects that causes this heat transfer. Heat is transferred from the hot water to the cold water until both samples have the same temperature.
Conductive heat flow involves the transfer of heat from one location to another in the absence of any material flow. The mechanism in which heat is transferred from one object to another object through particle collisions is known as conduction.
Convection is the process of heat transfer from one location to the next by the movement of fluids. The moving fluid carries energy with it. The fluid flows from a high temperature location to a low temperature location. The two examples are heating water in a pot and heating air in a room.
Radiation is the transfer of heat by means of electromagnetic waves. The transfer of heat by radiation involves the carrying of energy from an origin to the space surrounding it. The energy is carried by electromagnetic waves and does not involve the movement or the interaction of matter.
Radiation for heat to reach the meat, conduction to cook it inside
Precious seed BASIC SCIENCE FOR JUNIOR SECONDARY SCHOOLS BOOK 2 pages 139-140
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