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How are things transformed ? Changes and interactions

How are things transformed ? Changes and interactions. Unit IV – Lesson 1 – Images made by mirrors and lenses and their purpose. Types of Mirrors. Mirrors come in two basic forms : convex and concave .

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How are things transformed ? Changes and interactions

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  1. How are thingstransformed? Changes and interactions • Unit IV – Lesson 1 –Imagesmadebymirrors and lenses and theirpurpose

  2. Types of Mirrors • Mirrors come in twobasicforms: convexand concave. • A convexmirror, reflects at a wideranglenearitsedgedthanits center, creating a slightlydistortedimagethat’ssmallerthan actual size. • Concavemirrors curve inward, like a spoon (thesidethatholdssoup).

  3. Convex vs. Concave

  4. Convexmirror

  5. ConvexMirror • Convexmirrorshavemany uses, thesmallersize of theimagesmeansthatyou can see more withthesesurfaces, hencetheir use in safety mirrors.

  6. Concavemirror

  7. Concavemirror • Thismirrorshavetheabilitytocreateanimagewhentheircurvaturebounces light to a specificarea in front of them, thisareaiscalledthe focal point.

  8. Non-reversingmirrors • Alsoknown as true mirrors, werecreatedbyplacingtwomirrors perpendicular toeachother.

  9. Acousticmirrors • Huge concrete dishesbuilttoreflect and distributesoundinstead of light.

  10. Acouticmirror

  11. Two-waymirrors • Thesemirrors are madebycoatingoneside of a sheet of glasswith a verythi, verylightlyreflective material. Whenthecoatedside faces a lightedroom, some of the light reflects and somegoesinto a darkroombehindthemirror, makingitpossibletoseeintothelighetroombutnotout.

  12. Twowaymirror

  13. Refraction • Imageformationby a lensependsuponthe wave propertycalledrefraction.

  14. Energy’stransformation, importance and uses Unit IV –Lesson 2

  15. Energy • Energyisthecapacityto do work. Theinternationalmeasurementsystemforenergyisthe “International MeasuringSystem”, whichfromitsname in french, it’sabreviated SI. • TheJoule, istheinternationalyrecognizedunitforenergy.

  16. Energy • Anyform of energy can be transformedintoanotherform, theprocess of energytransformationisalsoknown as energycoversion.

  17. EnergyTransformation • Energydoesn’tdisappear, itjustchangesforms. Energytransformationistheprocess of changingenergyfromoneformtoanother.

  18. Themainenergyforms are: • Radiant (light) energy • Chemicalenergy • Mechanicalenergy • Nuclear energy • Electricalenergy • Heat (thermal) energy • Soundenergy

  19. EnergyForms

  20. Energyforms can be classified in twotypes: • Kineticenergy, whichismotionenergy. • Potentialenergy, whichisstoredenergy.

  21. Kineticenergy vs. Potentialenergy

  22. Soundenergy • Is a type of wave motion, sendingmolecules of air vibratingwhich produce sound.

  23. ElectricalEnergy • Electricalenergyisthemovingelectricalchargesfromonepointtoanother in a conductor.

  24. Nuclear Energy • Energystoredfromthenucleus of anatom, thatenergy can be releasedwhenwe combine orsplitthenucleus.

  25. ThermalEnergy • Total kineticenergy of atoms and moleculesthat are constantly in motion.

  26. RadiantEnergy • Energymadebyelectromagneticwavesthat produce light.

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