Download Energy Transformation Demos

Forms of Energy and Energy Transformations

Energy has a number of different forms it can be in
o All matter came from energy…Big Bang
 Higgs Field
Forms of Energy
 Break up into potential and kinetic forms…
o Mechanical Energy (motion of objects)
 Kinetic
 Potential
o Thermal Energy (heat)
o Chemical Energy (food, plants, fossil fuels,
batteries)
o Electrical Energy (energy of moving electrons)
 Mechanical energy is usually converted to
electrical energy (electricity) using a
generator
o Electromagnetic Energy
 Energy from Sun created by fusion…form
from moving ions
o Sound Energy
o Nuclear Energy
 Fusion of hydrogen inside sun creates
electromagnetic energy
 Fission inside nuclear power plants
 E=mc2
Energy Transformations

Law of Conservation of Energy (LoCoE):
Energy cannot be created or destroyed, it can
only be changed from one form of energy to
another
o The amount of energy (in joules) always remains the
same
o However energy can transform into other forms
 These are called energy transformations
Domino video…
Examples:
• Burning coal – chemical to thermal and EM
• Phosphorescence (firefly) – chemical to EM
• Playing a violin – mechanical to Sound
• Turning on a lamp – electrical to thermal and EM
• Sun emitting energy- nuclear to EM
Energy Transformation Demos
1.

Cookie
Jumping Jacks
______________ ____________________________
2.

Battery
_____________
T.V. Remote
_____________________________
3.

Your hand
Your partners hand
_______________ _____________________________
4.
Before a glow stick is cracked  After glow stick is cracked
________________________

_______________________
5.
Wires in car system

Subwoofer
http://www.youtube.com/watch?v=rddjVwbYwdg&feature=related
__________________ ____________________________
6.
Light switch
__________________

Light bulb
_________________________________