Energy key words Flashcards
(21 cards)
What is the definition of chemical store?
Energy stored in food and fuels.
Define conduction.
A way in which energy is transferred through solids, and to a much lesser extent in liquids and gases.
What is convection?
The transfer of energy by the movement of gases or liquids.
What is a convection current?
The movement of heated liquids or gases.
What does dissipated energy refer to?
Energy that has become spread out or ‘wasted’ by heating the environment.
Define elastic store.
Energy stored when objects change shape.
What is energy associated with?
Changes in temperature or with work.
What are energy resources?
Materials or mechanisms for heating or generating electricity.
What is an energy store?
Something such as a food or hot object that enables you to account for the energy at the start and end of a transfer.
What are fossil fuels?
Coal, oil, and gas made from the remains of trees and sea creatures over millions of years.
Define gravitational potential store.
Energy due to the position of an object in a gravitational field.
What is infrared radiation?
Radiation given off by the Sun and other objects that brings about energy transfer.
What is an insulator?
A material that does not conduct electricity or transfer energy well.
What is kinetic store?
Energy of moving objects.
What does the law of conservation of energy state?
Energy cannot be created or destroyed, only transferred.
What are non-renewable energy resources?
Energy resources that have a limited supply.
What is power rating?
The number in watts or kilowatts that tells you the rate at which an appliance transfers energy.
Define radiation.
The transfer of energy as a wave.
What are renewable energy resources?
Energy resources whose supply will not run out.
What is temperature?
A measure of how hot or cold something is, measured in degrees Celsius.
Define thermal store.
Energy in objects as a result of the motion of their particles.
