Topic-10 Energy Flashcards
Energy
Describes anything “that can do work”
Law of conservation of energy
Energy cannot be created or destroyed. Only transferred
Gravitational
Potential energy of an object elevated above the ground
Elastic
Energy stored by an elastic object that is stretched, such as a spring or rubber band
Chemical
Energy stored in chemicals that, when reacted together such as in burning reactions, release heat, sound or light.
Nuclear
Energy stored in the nucleus of atoms that can release energy slowly, such as In a nuclear reactor, or quickly, such as in a nuclear explosion.
Electrical
Energy supplied to homes by powerlines and available to your appliances via power outlets in the home.
Kinetic
Energy possessed by objects that are moving
Heat
Energy that causes objects to gain temperature
Light
Energy that may be released, for example, when an object is hot or by a nuclear reaction in a star.
Sound
Energy carried by the air in a room and detected by the ear.
Efficiency
The fraction of energy supplied to a device as useful energy it is usually expressed as a percentage.
Conduction
Transfer of heat through collision between particals
Insulator
A material that is a poor conductor heat
Convection
Transfer of heat through the flow of particles
Radiation
A method of heat transfer that does not require particles to transfer heat from one to another
Radiant heat
Heat transferred br radiation, as from the sun to the earth
Reflected
Bounced off
Transmitted
Passed through something, such as light or sound passing through air
Deciduous
Describes plants that lose their leaves during autumn and winter
Luminous
Releasing its own light
Incandescent
Describes objects that emit light when they are hot
Bioluminescent
Describes living things that release light energy
Non-luminous
Describes objects that do not emit their own light, but can be seen by reflected light
