Physics - Energy Stores and Pathways

Start-Of-Year Physics Module

Kinetic Energy

Moving Energy Store

Elastic Potential Energy

Stretched or Squashed Energy Store

Electrostatic Energy

Energy Store of two repelling charges being forced together

Gravitational Potential Energy

Energy store for objects at comparative heights

Nuclear Energy

Energy Store in the Nucleus of an atom

Thermal Energy

The total kinetic and potential energy of the particles in an object, in most cases this is the vibrations - also known as the kinetic energy - of particles. In hotter objects, the particles have more internal energy and vibrate faster.

Chemical Energy

The energy stored in chemical bonds, such as those between molecules.

Magnetic Energy

The energy stored when repelling poles have been pushed closer together or when attracting poles have been pulled further apart.

Mechanical work

a force moving an object through a distance

Electric Work

charges moving due to a potential difference

Heating (Pathway)

due to temperature difference caused electrically or by chemical reaction

Radiation (Pathway)

energy transferred as a wave, eg light and infrared - light radiation and infrared radiation are emitted from the sun

Change in gravitational potential energy

mass x gravitational field strength x change in height

Calculate speed with KE and mass

Speed = √(2 x kinetic energy/mass)

Power

The rate at which the athlete transfers energy

What energy store is predominate in muscles

Muscular Chemical Energy

What do you call the energy that dissipates to the environment?

Waste Energy

Closed system

A physical system in which matter cannot enter or exit

Open system

A physical system in which matter can enter or exit