Unit 2 review

Unit 2 review

By: Jonathan, and Mr. Gibson

​What is energy?

-Energy is the ability to do work​, and comes in multiple forms, Energy is what allows us to move, or cause change to the matter around us.

​Sound Energy

​this is the movement of energy through a substance through waves.

​-caused by Vibrations of the particles the object in question has.

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​Mechanical

​The sum of motion associated with the motion and position

​Chemical

​Energy stored in the bonds of the atoms, released when certain chemical reactions happen

​Nuclear

​Atomic energy stored in the nucleus of an atom

​-Released when atoms either use Fission or fusion

​Radiant

​Energy involving light. Comes from the sun and allows plants to photosynthesize.

​Thermal

​Also known as "heat energy"

​-Caused when a rise in temperature causes atoms and molecules to move faster and collide with each other

​ Hotter=faster=higher Thermal Energy

​Electrical

​Energy made available through the continuous flow of an electric current through an conductor

​Gravitational

​Caused by the positioning of an object. Uses the gravity of the Earth to bring objects back down to the surface of the planet. Varies depending on velocity and height of the object in question

​Elastic

​Caused when an object is put under stress from being either stretched or compressed. Converts to kinetic energy and given more velocity when released

​Kinetic

The energy of an object in motion. One of the two basic types of energy

​Potential

​The Energy of an object at rest. The second of the two basic forms of energy

States Of Matter​

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​Solids

​firm and stable in shape; not liquid or fluid. Solids such as water can change between all three. Molecules are tightly packed together, and have a set shape and volume.

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Liquids​

​a substance that flows freely but is of constant volume, having a consistency like that of water or oil. Molecules are able to move around over each other. Have no set set shape, yet a set volume

​Gas

​a substance or matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape and no fixed volume.

​Plasma

​an ionized gas consisting of positive ions and free electrons in proportions resulting in more or less no overall electric charge, typically at low pressures (as in the upper atmosphere and in fluorescent lamps) or at very high temperatures (as in stars and nuclear fusion reactors). Have the same properties as gases, except being electrified

​Law of Conservation of energy

​The law of Conservation states that energy cannot be created nor destroyed, it can only change states

​Graphs interpretation

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​Graphing Gravitational energy

​Graphing potential energy by mass

​Graphing potential energy by height

​Graphing Kinetic Energy

​Graphic kinetic energy by mass

​Graphing kinetic energy by speed (velocity)