Forms of Energy & Transformations Energy makes things happen!! Energy is neither created nor...
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Transcript of Forms of Energy & Transformations Energy makes things happen!! Energy is neither created nor...
![Page 1: Forms of Energy & Transformations Energy makes things happen!! Energy is neither created nor destroyed, it is constant.](https://reader035.fdocuments.us/reader035/viewer/2022062322/56649ca45503460f94964eda/html5/thumbnails/1.jpg)
Forms of Energy & Transformations
Energy makes things happen!!
Energy is neither created nor destroyed, it is constant.
![Page 2: Forms of Energy & Transformations Energy makes things happen!! Energy is neither created nor destroyed, it is constant.](https://reader035.fdocuments.us/reader035/viewer/2022062322/56649ca45503460f94964eda/html5/thumbnails/2.jpg)
I. NUCLEAR ENERGY
A. Fission - - - Split apart -- - -- Radioactive uranium
atoms can break apart –fission.
If fission happens in a billionth of a second you get an ATOMIC BOMB.
B. Fusion Joining together Deuterium+Lithium= *
(heat + light) so D + L = energy SUN Scientists can’t control
this yet; it’s hard to build a star! *
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II. KINETIC ENERGY: MOTION
A. Translational: Motion from Point A to Point B
Examples: toy car or rolling ball...
B. Rotational: SpinExamples: toy top
C. Tortional: TwistExamples: twisted playground swing, anything that
twists
D. Vibrational: Shake (short movements)Examples: Rattleback, Slinky
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III. POTENTIAL ENERGY: STORED (waiting to happen)
Outline A. Gravitational
HYDROPOWER, WALKING DUCK WATER CYCLE/ALPINE ECOSYSTEM
B. Chemical EXPLODING CANNISTER/ALCOHOL BURNER, BATTERY
C. ElasticSPRINGS
RUBBER BANDS
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III. POTENTIAL:A. Gravitational: Hydropower
Pull of gravity makes things move downhill.
Reservoir: water runs downhill to turn the turbine to turn the generator to make electricity.
PE=mgh
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III. POTENTIAL: A. Gravitational: Water Cycle
Water cycle: precipitation-rain
evaporation-sun
condensation-cloud
precipitation-rain
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III. POTENTIAL: B. Chemical: Natural Resources
Harnessing fossil fuels and natural resources:
Oil Coal Natural Gas Wood Food
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III. POTENTIAL: C. Elastic: Spring/Stretch
Rubber Plastic poppers Super balls, Air-zooka Rubber bands Screaming Balloons
Springs Slinky
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IV. LIGHT ENERGY (Electromagnetic Energy) A. Lightning (Tesla Coil)
1. Air inside the cloud rubs, makes static electricity.. Negative charges settle in cloud. Negative charges move to positive > lightning.
B. Light Sticks C. Laser – very focused ray of light
Surgery; Pointers
D. Solar cells
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V. SOUND ENERGY
A. THUNDER When lightning strikes,
it heats and forces air molecules outward.
B.SONIC BOOM
C. EXAMPLES: Cracker Blaster, Solar Tunes, Thunder Drum
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VI. HEAT ENERGY: A. The Heat Tax
Heat comes from every energy conversion !!!
Nothing is for nothing! Always pay “heat taxes.”EXAMPLES:Solar thermal Wind energyFriction = motion + heatThermoelelectric ConverterHeat EnginesRadiometer
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VI. HEAT ENERGY: B. Geothermal
“Earth” + “heat” Dig a hole: Temp.
Increases as you go. Water gets in the
cracks of the earth;
turns to steam:
- steam heat
- geysers (Old Faithful)
- Geysers Plant in CA
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Examples of HEAT ENERGY: C. Solar Thermal
The sun’s heat:
Car on cold day Wind Energy:
1. Sun heats the air unevenly.
2. Warm air rises, makes wind.Wind has translational KE.
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Do you know the energy transformations in FIREWORKS?
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FIREWORKS
Answer
Going up:
Chemical > Trans. KE > Grav. PE > Trans. KE + heat
Exploding:
Chemical > Light + Sound + Heat
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This concludes our energy notes.