Slide 1

Slide 2

Slide 3

Energy is defined as the ability to do work or cause change Work is done when a force causes an object to move in the direction of that force Examples: Pushing a book off of the table is work and energy allows this work to take place Energy is all around us all of the time being harnessed and expressed in different ways

Slide 4

Kinetic energy is the energy of motion and/or movement This is dependent on the mass and speed of an object Note: Speed has more of an effect Potential energy is energy that is stored and has the potential to do something There are three types of P.E. Elastic Rubber band pulled back Gravitational Raising an object off of the ground (height & mass) Chemical A log being placed on a fire Kinetic energy is the energy of motion and/or movement This is dependent on the mass and speed of an object Note: Speed has more of an effect Potential energy is energy that is stored and has the potential to do something There are three types of P.E. Elastic Rubber band pulled back Gravitational Raising an object off of the ground (height & mass) Chemical A log being placed on a fire

Slide 5

Mechanical The total kinetic and potential energy of motion and position of an object Thermal The kinetic energy due to random motion of the particles that make up an object (Temperature and Number of Particles) Chemical The potential energy of a compound that changes as its atoms are rearranged Electrical The potential or kinetic energy of charged electrons Sound The kinetic energy caused by an objects vibrations Light The kinetic energy caused by the vibrations of electrically charged particles Nuclear The potential energy caused by changes in the nucleus of an atom Mechanical The total kinetic and potential energy of motion and position of an object Thermal The kinetic energy due to random motion of the particles that make up an object (Temperature and Number of Particles) Chemical The potential energy of a compound that changes as its atoms are rearranged Electrical The potential or kinetic energy of charged electrons Sound The kinetic energy caused by an objects vibrations Light The kinetic energy caused by the vibrations of electrically charged particles Nuclear The potential energy caused by changes in the nucleus of an atom

Slide 6

Conservation of Energy is the idea that energy is not created or destroyed, but it can only change forms Energy conversion explains this change from one form to another and happens all around useverydayall the time!!! Example: A car uses chemical energy in a battery to create electrical energy to power an electric starter motor. This motor uses the electrical energy to create mechanical energy to start a vehicle. The vehicle converts chemical energy into mechanical energy to make the vehicle go. Conservation of Energy is the idea that energy is not created or destroyed, but it can only change forms Energy conversion explains this change from one form to another and happens all around useverydayall the time!!! Example: A car uses chemical energy in a battery to create electrical energy to power an electric starter motor. This motor uses the electrical energy to create mechanical energy to start a vehicle. The vehicle converts chemical energy into mechanical energy to make the vehicle go.

Slide 7

Waves are a disturbance which transfer energy from one point to another with little or no transfer of matter There are several parts of a wave: Crest The section of the wave above the undisturbed portion Trough The section of the wave below the undisturbed portion Amplitude The positive and negative amount of energy due to the disturbance Wavelength The distance between any two corresponding positions Crest to Crest, Trough to Trough, Cycle to Cycle Cycle Start of the crest to the end of the trough Period The time of one complete cycle Waves are a disturbance which transfer energy from one point to another with little or no transfer of matter There are several parts of a wave: Crest The section of the wave above the undisturbed portion Trough The section of the wave below the undisturbed portion Amplitude The positive and negative amount of energy due to the disturbance Wavelength The distance between any two corresponding positions Crest to Crest, Trough to Trough, Cycle to Cycle Cycle Start of the crest to the end of the trough Period The time of one complete cycle

Slide 8

Mechanical Waves Require a material medium to travel (air, water, ropes, etc.) Three types of M.W. Transverse; Up and Down (Pebble in a Pond) Longitudinal; Side to Side (Sound) Surface; Both transverse & longitudinal (Earthquakes) Electromagnetic Waves Do not require a material medium to travel (Light, Radio, Gamma) Mechanical Waves Require a material medium to travel (air, water, ropes, etc.) Three types of M.W. Transverse; Up and Down (Pebble in a Pond) Longitudinal; Side to Side (Sound) Surface; Both transverse & longitudinal (Earthquakes) Electromagnetic Waves Do not require a material medium to travel (Light, Radio, Gamma)

Slide 9

Energy is defined as the ability to do work or cause change Kinetic energy is the energy of motion and/or movement (mass and speed) and potential energy is energy that is stored The conservation of energy is the idea that energy cannot be created or destroyed but can only change forms There are several types of energy; mechanical, thermal, chemical, electrical, sound, light and nuclear, this is constantly being converted from one form to another due to energy conversion Waves are a disturbance which transfer energy from one point to another with little or no transfer of matter Mechanical waves require a medium in which to travel and an electromagnetic wave does not require a medium Energy is defined as the ability to do work or cause change Kinetic energy is the energy of motion and/or movement (mass and speed) and potential energy is energy that is stored The conservation of energy is the idea that energy cannot be created or destroyed but can only change forms There are several types of energy; mechanical, thermal, chemical, electrical, sound, light and nuclear, this is constantly being converted from one form to another due to energy conversion Waves are a disturbance which transfer energy from one point to another with little or no transfer of matter Mechanical waves require a medium in which to travel and an electromagnetic wave does not require a medium