Energy Resources And Energy Transfer Flashcards
What are the Energy Stores?
- Kinetic
- Thermal
- Chemical
- Gravitational Potential
- Elastic Potential
- Electrostatic
- Magnetic
- Nucleur
What is Kinetic energy?
Anything moving has energy in its kinetic energy store
What is Thermal energy?
Any object - Hotter it is, the more energy it has in store
What is Chemical energy and give an example?
Anything that released energy by a chemical reaction (food,fuels)
What is Gravitational Potential energy?
Anything in gravitational field (can fall)
What is Elastic Potential energy and give an example?
Anything stretched (springs and rubber bands)
What is Electrostatic energy?
Two charges that attract or repel each other
What is Magnetic energy?
Two magnets that attract or repel each other
What is Nuclear energy?
Atomic nuclei release energy from this store in nuclear reactions
How can Energy be Transferred between stores?
- Mechanically
- Electrically
- By heating
- By radiation
When would transfer Mechanically between store and give an example?
Object moving due to force acting on it (pushing,pulling)
When would you transfer Electrically between stores and give an example?
Charge moving through a Potential difference (charges moving around a circuit)
When would you transfer By Heating between stores and give an example?
Energy transferred from Hotter object to colder object (heating a pan of water on hob)
When would you transfer By Radiation between stores and give an example?
Energy transferred (by light/sound waves - energy from sun tracing earth as light)
What is a Closed System?
A system (collection of objects) that can be treated on its own, without any matter being exchanged with surroundings
