Flashcards: Understanding Energy Stores and Transfers — 22 cards

Energy stores — definition?

Locations where energy is held or stored.

Kinetic energy store — role?

Stores energy due to an object's motion.

Thermal energy store — mechanism?

Energy stored in particle vibrations within a substance.

Elastic potential energy — example?

Stored in stretched or compressed objects.

Gravitational potential energy — depends on?

Object’s height and mass.

Chemical energy — stored in?

Bonds of chemical substances.

Energy transfer — process?

Moving energy from one store to another.

Energy transfer in devices — example?

Electrical to light and heat in bulbs.

Forms of energy — include?

Light, sound, thermal, mechanical, magnetic, nuclear.

Conservation of energy — law?

Energy cannot be created or destroyed.

Energy measured in?

Joules (J).

James Prescott Joule — contribution?

Formulated the law of conservation of energy.

Energy changes — caused by?

Heat, work, or chemical reactions.

Wasted energy — example?

Heat produced in electrical appliances.

Energy in devices — example?

Light bulbs convert electrical to light and heat.

Chemical energy in food — role?

Provides energy for body functions.

Energy flow diagrams — purpose?

Show how energy moves between stores.

Energy in everyday objects — example?

Elephant on a box has gravitational potential energy.

Energy in everyday life — involves?

Transfer and transformation during daily actions.

Energy in batteries — stored as?

Chemical energy.

Energy in fossil fuels — released by?

Combustion of chemical bonds.

Energy in a falling object — transfer?

Gravitational potential to kinetic energy.