Forms Of Energy Worksheet Page 2
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42.2 What Happens When Energy Is Converted from One Form to Another?
a)
Observe the demonstration of an exercise bicycle connected to large light bulbs. List
the energy conversions that occur when the bulbs light.
chemical potential energy
mechanical energy of motion
electrical
energy, thermal energy, and sound energy
radiant energy
b)
Connect the hand-cranked generator to the solar cell. Shine the flood light onto the
solar cell. List the energy conversions that take place.
electrical energy
radiant energy
electrical energy
mechanical
energy of motion, thermal energy, and sound energy
c)
Observe the demonstration of the toy train. List the energy conversions that occur
when the train goes uphill.
electrical energy
mechanical energy of motion, thermal energy, and
sound energy
gravitational potential energy
List the energy conversions when the train coasts downhill.
gravitational potential energy
mechanical energy of motion, thermal
energy, and sound energy
d)
Arrange two square magnets on the wooden stick so that one magnet floats above
the other. Press the floating magnet down and then release it. List the energy
conversions that occur.
While pressing down the magnet: chemical potential energy (from your
body)
mechanical energy of motion
magnetic potential energy
When the magnet is released: magnetic energy
mechanical energy of
motion
gravitational potential energy
e)
Your instructor will explain the electric drill activity. Be sure to hold the cardboard
tube over the end of the drill while you perform this activity. List the energy
conversions that occur.
electrical energy
mechanical energy of motion of the drill
thermal
energy (water heats and turns to steam)
mechanical energy of motion
(cork pops off) )
gravitational potential energy (cork flies up)
mechanical energy of motion (cork falls back down)
2.3 Which Devices Involve These Energy Conversions?
Identify devices that illustrate a conversion from the initial to the final energy forms.
1)
Chemical Energy
Electrical Energy
batteries
2)
Chemical Energy
Radiant Energy
chemiluminesence
3)
Chemical Energy
Thermal Energy
burning any substance
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