Presentation on theme: "Notes on the different types of energy"— Presentation transcript:
1Notes on the different types of energy Energy Part INotes on the different types of energy
2What Is Energy? Energy is the ability to do work. Work happens when force causes an object to change or move.NO WORKWORK
3Types of Energy KINETIC energy is the energy of all moving objects. POTENTIAL energy is the stored energy an object has because of its position.
4KINETIC ENERGY KINETIC ENERGY (KE) depends on speed and mass. The more speed an object has, the more kinetic energy is has.The more mass an object has, the more kinetic energy it has.
5a car moving 50 km/hr OR a car moving 90 km/hr? Which has more KE:a car moving 50 km/hr OR a car moving 90 km/hr?90 km/hr—objects with more speedhave more KEWhich has more KE: an elephant running 3 m/sec OR an ant running 3 m/sec?Elephant—objects with more mass have more KE
6POTENTIAL ENERGY POTENTIAL ENERGY (PE) depends on weight and height. The more weight an object has, the more PE it will have.The higher up an object is, the more PE it will have.
7Which object has more PE in the following examples: 1. A rollercoaster at the top of a hill OR at the bottom of a hill.2. A bowling ball dropped off the top of a building OR a golf ball dropped off the top of a building.Top—higher objectshave more PEBowling ball—objects with more weight have more PE
9REMINDER: Energy is the ability to do WORK. There are 7 Forms of Energy that can cause things to MOVE, or do WORK.ATOMIC (NUCLEAR)CHEMICALHEAT (THERMAL)ELECTRICALLIGHT (RADIANT)MECHANICALSOUND
10The 7 Forms of Energy can be remembered using this acronym: AC HELMS
11ACHELMSATOMIC ENERGY- the energy generated when the NUCLEUS of ATOMS join together or split apart.EXAMPLES:Atomic Energy gives the Sun its energy.Atomic bombs.
12ACHELMSCHEMICAL ENERGY- the energy stored in matter that is released during a chemical change.EXAMPLESBurning chemicals in fuel to make heatUsing chemicals stored in batteriesDigestion of food
13ACHELMSHEAT/THERMAL ENERGY- the energy that is related to heat and the temperature of matter.NOTE: The faster the particles move the more heat/thermal energy is generated.Examples:The sun making you warmFireRadiator
14ACHELMS ELECTRICAL ENERGY the energy of electrically charged matter. EXAMPLES:Energy traveling through a wireLightning
15ACHELMSLIGHT/RADIANT ENERGY the energy caused by the vibration of electrically charged atoms.EXAMPLESVisible lightSunlightElectrical lightsX-raysMicrowavesUltraviolet light (UV rays)
16ACHELMSMECHANICAL ENERGY-the energy of matter that has potential and kinetic energy.EXAMPLES:Living OrganismsKE when movePE from foodCarsKE when movingPE from gasoline (also chemical)
17ACHELMS SOUND ENERGY -the energy from the vibration of an object. EXAMPLES:Guitar stringsVocal chords
18ALL 7 Forms of Energy can be either POTENTIAL AND/OR KINETIC EXAMPLE:A guitar string being pulled back is potential sound energy.When the guitar string is released, it is changed to kinetic sound energy.
19ENERGY CONVERSION- A change in one type of energy to another is called an energy conversion Conversion also means transformation