Download here: Ontario Curriculum Expectations
It is a poverty to decide that a child must die so that you may live as you wish.
Mother Teresa
I believe that, as long as there is plenty, poverty is evil.
Robert F Kennedy
All forms of energy fall into one of two categories: Potential Energy or Kinetic Energy.
Potential Energy:
Potential energy is stored energy. It has the potential to be used to do work at a later time.
Gravitational Potential Energy: is energy an object has due to its position above the ground. The higher the object is raised, the more gravitational potential energy it possesses. A ball held at a height of 1.0 m does not have very much gravitational potential energy because it is not very high off the ground. As a result, if the ball is dropped it will not be moving very quickly when it hits the ground. However, a ball held at a height of 10.0 m has much more gravitational potential energy due to its greater height above the ground. When dropped, it will be moving much faster when it hits the ground.
Chemical Potential Energy: is energy that is stored in the bonds between atoms. When these bonds are broken, the energy is released. Natural gas, oil, petroleum, and wood will all release their chemical energy when they are burned and their molecular bonds are broken. Similarly, you get energy when the molecular bonds in the food you eat are broken down during digestion
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Elastic Potential Energy: is energy that an object has due to its condition. A stretched elastic band or compressed springs have a great deal of elastic potential energy.
Nuclear Energy: is the energy that is stored in the nucleus of the atom; it is the energy that holds the atom together. If the nucleus is broken apart, as in a nuclear reactor, then the energy can be released.
Kinetic Energy:
Kinetic energy is energy of motion. It is energy that is being used to do work.
Bulk Kinetic Energy: is the energy an object has because it is moving. Usually, this is just called kinetic energy. The faster an object is moving, the more kinetic energy it possesses.
Electrical Energy: is the energy of moving electric charges; lightning and the electricity in your home are good examples.
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Thermal Energy: or heat, is the energy of the vibration and movement of molecules within a substance. As the molecules vibrate more quickly, the temperature of the object and its thermal energy increase.
Radiant Energy: is energy that travels as an electromagnetic wave; this includes visible light, x-rays, and gamma rays.
Sound Energy: is energy that is carried from molecule to molecule by longitudinal waves.
Watch Bill Nye’s take on energy: