Download Forms of Energy and its Changes - Notes

Forms of Energy and its Changes - Notes
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How did you get to school today?
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If you walked, did you get tired? Why do you think you got tired?
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If you rode in a vehicle, did the vehicle ever just shut down and stop for no reason?
You were able to travel this morning because of _____________. This is the ability or
capacity of any physical system to do ______________. All work is done by
________________. Since there are so many different kinds of forces, energy often takes
on many different forms.
There are two basic forms of energy: ______________________________________ and
__________________________________. All types of energy fall under these two
categories (forms).
_____________________ Energy are forms of energy in motion
_____________________ Energy are forms of energy that are stored
Mechanical Energy
Mechanical energy is due to the position and motion of the object. It can be in either
potential or kinetic form.
Mechanical energy = _________________
Thermal energy or _______________, is the kinetic energy of particles of matter.
Examples:
Electrical Energy comes from the ____________________ of electrons. Is this kinetic or
potential?
What are some examples of transforming electrical energy?
Chemical Energy is the energy that holds bonds between atoms together. This kind of
energy is potential because you don’t get the energy until you ___________ those bonds.
An example of transforming chemical energy is a car engine. Chemical potential energy in
gasoline is transformed into kinetic energy of the car as it moves!!
KE and PE
In many situations, there is a conversion between potential and kinetic energy.
The total amount of potential and kinetic energy in a system is called the mechanical
energy
Mechanical energy = PE + KE
Conservation of Energy
Explain:
The big picture… the total energy in the universe remains constant.
Formula for figuring out Potential Energy of a system:
Formula for figuring out Kinetic Energy of a system: