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Page No.:
Naine the following
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abc
sie
ito
Q:19. The ability of a substance to How.
b. The study of heat and its interaction
with
energy
and work
C. A probable solution to a pocoblem
d. The space between the molecules of matter
& The branch of science that deals with
the study of plants.
Answers
Explanation:
Conduction
Conduction is the transfer of heat through physical contact.
LEARNING OBJECTIVES
Assess why particular characteristics are necessary for effective conduction
KEY TAKEAWAYS
KEY POINTS
On a microscopic scale, conduction occurs as rapidly moving or vibrating atoms and molecules interact with neighboring particles, transferring some of their kinetic energy.
Conduction is the most significant form of heat transfer within a solid object or between solids in thermal contact.
Conduction is most significant in solids, and less though in liquids and gases, due to the space between molecules.
The rate of heat transfer by conduction is dependent on the temperature difference, the size of the area in contact, the thickness of the material, and the thermal properties of the material(s) in contact.
KEY TERMS
thermal conductivity: the measure of a material’s ability to conduct heat
Conduction
Conduction is the transfer of heat through stationary matter by physical contact. (The matter is stationary on a macroscopic scale—we know there is thermal motion of the atoms and molecules at any temperature above absolute zero.) Heat transferred from an electric stove to the bottom of a pot is an example of conduction.
Some materials conduct thermal energy faster than others. For example, the pillow in your room may the same temperature as the metal doorknob, but the doorknob feels cooler to the touch. In general, good conductors of electricity (metals like copper, aluminum, gold, and silver) are also good heat conductors, whereas insulators of electricity (wood, plastic, and rubber) are poor heat conductors.