P1 Flashcards
What is Energy?
The ability to do work.
What is a Chemical Energy store?
The energy stored in chemical bonds between molecules.
What is a Kinetic Energy store?
The energy of a moving object.
What is a Gravitational Potential Energy store?
The energy of an object at height.
What is a Thermal Energy store?
The total energy of the particles in an object.
What is a Elastic Potential Energy store?
The energy stored in an object when it is stretched or squashed.
What is a Magnetic Energy store?
The energy stored:
When repelling poles are brought close together.
When attracting poles have been pulled further apart.
What is an Electrostatic Energy store?
The energy stored:
When repelling charges have been brought closer together.
When attracting charges have been brought closer together.
What is a Nuclear Energy store?
The energy stored in the nucleus of an atom.
Examples of Chemical Energy stores:
Batteries,
Food,
Fuel,
Muscles.
Examples of Kinetic Energy stores:
Runners, Buses.
Examples of Gravitational Potential Energy stores:
Aeroplanes,
Mugs on a table,
Balls in the air.
Examples of Thermal Energy stores:
Hot coffee,
Human body.
Examples of Elastic Potential Energy stores:
Elastic band, Spring.
Examples of Magnetic Energy stores:
Fridge magnets, Compasses.
Examples of Electrostatic Energy stores:
Van de Graaff generator.
Examples of Nuclear Energy stores:
Nuclear Recator
What is the law of the Conservation of Energy?
Energy cannot be created or destroyed, only transferred from one store to another.
What are the 5 types of Energy Transfers?
Heating,
Mechanical,
Radiation: Light and Sound,
Electrical
What is a closed system?
A system that does not allow the transfer of matter or energy in or out of it.
What is an open system?
A system that allows the transfer of matter and energy in or out of it.
What happens to the energy in a closed system?
Total energy in = Total energy out
What is energy measured in?
Joules
What is Work?
The amount of energy transferred when a force moves.
