Energy Flashcards
1
Q
What is elastic energy?
A
Elastic potential energy is stored when an object is stretched or squashed eg. compressed springs, inflated balloons.
2
Q
What is kinetic energy?
A
Kinetic energy is the energy of a moving object. Eg. Runner, Buses.
3
Q
What is thermal energy?
A
- The total kinetic and potential energy of particles in an object.
- This is in the vibrations of the object - Kinetic energy.
- Increasing separation of molecules requires work to be done by the potential energy store.
- In hotter objects, they have more thermal energy and vibrate faster.
4
Q
What is chemical energy?
A
- Energy stored in chemical bonds.
- Can release energy by a chemical reaction. Eg. Food, Fuels, Batteries.
5
Q
What is nuclear energy?
A
- Energy stored in the nucleus of an atom.
6
Q
What is electrostatic energy?
A
- Energy sored when repelling charges move closer together or when attracting charges are pulled further apart.
7
Q
What is magnetic energy?
A
- Energy stored when repelling poles are pushed closer together and attracting poles move further apart. eg. a fridge magnet, maglev trains.
8
Q
What is mechanical work?
A
- Mechanical work is a force moving an object through a distance.
9
Q
What is electric work?
A
- Electric work is when charges are moving due to a potential difference.
10
Q
What is voltage?
A
- Voltage is the measure of energy given to charge carriers.
11
Q
What is potential difference?
A
- Potential difference is the voltage between two points that make an electric current flow.
12
Q
What is heating?
A
- Heating is an energy transfer due to temperature difference caused electrically or by a chemical reaction.
13
Q
What is radiation?
A
- Radiation is energy transferred by waves. eg. light, infrared radiation emitted from the sun.
14
Q
What are energy flow diagrams?
A
- Energy flow diagrams show how energy is transferred from one store to another.
15
Q
What is work?
A
- Work is the measure of energy transfer when a force moves an object through a distance.
16
Q
What are work done and energy transferred measured in ?
A
- Work done and energy transferred are measured in Joules.