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Energy Part I Notes on the different types of energy.

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Presentation on theme: "Energy Part I Notes on the different types of energy."— Presentation transcript:

1 Energy Part I Notes on the different types of energy

2 What Is Energy?  Energy is the ability to do work.  Work happens when force causes an object to change or move. NO WORKWORK

3 Types of Energy  KINETIC energy is the energy of all moving objects.  POTENTIAL energy is the stored energy an object has because of its position.

4 KINETIC 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.

5 Which has more KE: an elephant running 3 m/sec OR an ant running 3 m/sec? Which has more KE: a car moving 50 km/hr OR a car moving 90 km/hr? 90 km/hr—objects with more speed have more KE Elephant—objects with more mass have more KE

6 POTENTIAL 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.

7 Which 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 objects have more PE Bowling ball—objects with more weight have more PE

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9 REMINDER: Energy is the ability to do WORK.  There are 7 Forms of Energy that can cause things to MOVE, or do WORK.  ATOMIC (NUCLEAR)  CHEMICAL  HEAT (THERMAL)  ELECTRICAL  LIGHT (RADIANT)  MECHANICAL  SOUND

10 The 7 Forms of Energy can be remembered using this acronym: AC HELMS

11 ATOMIC ENERGY- the energy generated when the NUCLEUS of ATOMS join together or split apart. EXAMPLES:  Atomic Energy gives the Sun its energy.  Atomic bombs.

12 ACHELMS CHEMICAL ENERGY- the energy stored in matter that is released during a chemical change. EXAMPLES  Burning chemicals in fuel to make heat  Using chemicals stored in batteries  Digestion of food

13 ACHELMS HEAT/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 warm  Fire  Radiator

14 ACHELMS ELECTRICAL ENERGY the energy of electrically charged matter. EXAMPLES:  Energy traveling through a wire  Lightning

15 ACHELMS LIGHT/RADIANT ENERGY the energy caused by the vibration of electrically charged atoms. EXAMPLES  Visible light  Sunlight  Electrical lights  X-rays  Microwaves  Ultraviolet light (UV rays)

16 ACHELMS MECHANICAL ENERGY-the energy of matter that has potential and kinetic energy. EXAMPLES:  Living Organisms  KE when move  PE from food  Cars  KE when moving  PE from gasoline (also chemical)

17 ACHELMS SOUND ENERGY -the energy from the vibration of an object. EXAMPLES:  Guitar strings  Vocal chords

18 ALL 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.

19 ENERGY CONVERSION- A change in one type of energy to another is called an energy conversion Conversion also means transformation


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