Forms of energy!


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science powerpoint of the forms of energy,for students in years 8-9, it has inforemation of all the eneryg required in todays life, good for tests and projects!

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Forms of energy!

  1. 1. By: Areeba Sadiq
  2. 2. Energy causes things to happen around us. The properdefinition for energy is: "Energy Is the Ability to DoWork.”Energy makes everything happen and can be divided intotwo types: Stored energy is called potential energy andmoving energy is called kinetic energy.Energy can be found in a number of different forms whichwill be described with detail in this PowerPoint.
  3. 3. Light is a form of energy and the speed of light isabout 300,000 km/s. Light energy is carried as anelectromagnetic radiation. Light energy can beluminous meaning objects that reflect light or non-luminous meaning, objects don’t give off light, itreflects light off another source like a moon.
  4. 4. Electric energy is the scientific form of electricity, andrefers to the flow of power or the flow of charges along aconductor to create energy. Electrical energy is known tobe a secondary source of energy, which means that weobtain electrical energy through the conversion of otherforms of energy.
  5. 5. Sound energy is the energy produced by sound vibrations asthey travel. Sound energy is a wave of vibrations in a material.Depending on how many sound waves come in a certain periodof time, the pitch of the sound that we hear moves up and down.This is called the frequency. Also, depending on the strength ofthe waves, the sound is louder or softer.Sound travels at different speeds depending on the material it istravelling through.
  6. 6. Kinetic energy is energy that moves, or is motion energy.An object that is moving, whether that movement ishorizontal or vertical movement, has kinetic energy. Whenan object has kinetic energy, the elements of the object thatare moving are elements within the object such as waves,atoms, electrons, and molecules of that object that arecausing it to move.Kinetic energy is useful because the energy of movementin itself can be used. Kinetic energy can be converted intoother forms of energy that is useful, such as heat orpotential energy. In some cases, kinetic energy can evenbe converted into light or sound as well. There are manyforms of kinetic energy - vibrational, rotational, andtranslational
  7. 7. Gravitational potential energy is energy an objectpossesses because of its position in a gravitational field.Potential energy, or stored energy, is the ability of a systemto do work due to its position or internal structure. Forexample, gravitational energy is stored energy by anobjects position in a gravitational field while elastic potentialenergy is the energy stored in a spring.
  8. 8. Heat energy is a form of energy which transfers amongparticles in a substance. In other words, under kinetictheory, the heat is transferred by particles bouncing intoeach other. It is basically a form of energy transferred by adifference of temperature. Heat energy is the energy storedwithin atoms, that can be produced when a substancevibrates and causes friction.
  9. 9. Energy that exists in the bonds that hold atomstogether. When bonds are broken, chemical energy is released.Examples:• Digesting food-bonds are broken to release energyfor your body to store and use.• Sports- your body uses energy stored in yourmuscles obtained from food.
  10. 10. Elastic energy is potential energy. Elastic potentialenergy is the energy stored in elastic materials becauseof their stretching or compressing. Elastic potentialenergy can be stored in rubber bands, bungee chords,trampolines, springs, an arrow drawn into a bow, etc. Theamount of elastic potential energy stored in such adevice is related to the amount of stretch of the device -the more stretch, the more stored energy.
  11. 11. Nuclear energy is energy stored in the nucleus of an atom,holding the atoms together. When the nucleus of an atom splits,nuclear energy is released. Nuclear energy is the mostconcentrated form of energy. Nuclear energy comes fromradioactive decay or a nuclear explosion.