Flashcards in Chapter 10 Deck (28):
energy that has the potential to do work and so the energy is ‘stored’, such 339as gravitational energy, elastic energy and chemical energy
energy stored due to the height of an object above a base level
the potential energy stored in a stretched elastic material
potential energy derived from chemical reactions
the energy made available by the flow of electric charge through a conductor
energy due to the motion of an object
Heat energy (or thermal energy or simply heat) is defined as a form of energy which transfers among particles in a substance (or system) by means of kinetic energy of those particles. ... In physical equations, the amount of heat transferred is usually denoted by the symbol Q.
Light energy is defined as how nature moves energy at an extremely rapid rate, and it makes up about 99% of the body's atoms and cells, and signal all body parts to carry out their respective tasks. An example of light energy is the movement of a radio signal.
Sound is the movement of energy through substances in longitudinal (compression/rarefaction) waves. Sound is produced when a force causes an object or substance to vibrate — the energy is transferred through the substance in a wave.
Law of conservation of energy
a law that states that energy cannot be made or lost. However, energy can be transformed from one type to another or transferred from one object to another.
the fraction of energy supplied to a device as useful energy. It is usually expressed as a percentage.
Thermal energy transfer
Heat may be transferred by means of conduction, convection, or radiation. Conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. Collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object.
transfer of heat through collisions between particles
transfer of heat through the flow of particles
a method of heat transfer that does not require particles to transfer heat from one place to another
passed through something, such as light or sound passing through air
a material or device that conducts or transmits heat or electricity, especially when regarded in terms of its capacity to do this.
a material that is a poor conductor of heat
releasing its own light
describes objects that emit light when they are hot
describes living things that release light energy
describes objects that do not emit their own light, but can be seen by reflected light
repeated fast, back-and-forth movements
the process of pushing a material into itself
in sound waves, the layers of air particles that are spread apart (between compressions)