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Energy-Physics 11 Cheat Sheet (DRAFT) by

Overview of Concepts in the Energy unit of grade 11 physics

This is a draft cheat sheet. It is a work in progress and is not finished yet.

Kinetic Energy

Kinetic Energy is the energy possessed by a moving object.
Equation= Ek=½mv2

Potential Energy

Potential Energy is the energy of an object due to its height above the ground.
Equation: Ep= m·g·Δh

Latent Heat

The total thermal energy absorbed or released when a substance changes state, measured in joules


Mechanical work is the applic­ation of a force on an object that displaces the object in the direction of the force or a component of the force.

Thermal Energy

Thermal energy is energy due to the movement of particles inside a substa­nce.The more movement, the more thermal energy.
Equation: ̇Q=m·c·ΔT

Nuclear Energy

Nuclear Energy is found in the nucleus of an atom and keeps the protons together.

Law of Conser­vation of Energy

Energy can neither be created nor destroyed.


The rate of transf­orming energy or doing work

Nuclear Fission

Nuclear Fission occurs when a heavy atom is struck by a nucleus, causing it to break apart into smaller, more stable atoms. By doing this, it releases a lot of energy.


Alpha Decay
Helium Particle is emitted.
Beta Positive Decay
A proton becomes a neutron and a positron and the positron is emitted.
Beta Negative Decay
A neutron becomes a proton and an electron, and the electron is emitted.
Electron capture
An electron is capture by an atom, resulting in a proton and electron forming a neutron.
Gamma Decay
A photon is emitted.

Nuclear Fusion

Nuclear Fusion is the process of taking small, stable atoms, and fusing them to create larger, less stable atoms. By doing this, energy is produced. No nuclear waste results from this transf­orm­ation.

Thermal Energy Transfer

Thermal energy moves from hotter objects to colder objects. The transfer of thermal energy is known as heat.