Transcript Measuring Various Forms of Energy

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Measuring Various Forms
of Energy
STARS
Science Grades (3-5)
Standard: The student knows that various forms of energy
can be measured in ways that make it possible to determine
the amount of energy that is transformed
Geothermally speaking…
Geothermal Energy
Geothermal Power Plants
The steam either comes directly from the resource or the
very hot, high pressure water is depressurized to produce
steam
Steam is then used to turn turbines, which drive generators
that generate electricity
Electrical Energy
Primary source of energy consumption
Electric Circuit: a system that can
continuously separate negative from
positive charges, then extract energy from
them as they move around to recombine
Electrical Energy
The relationship between voltage,
resistance and current
Energy Transfer Demo
Energy can be transformed from one type
to another
Battery
Wire
Light bulb
In this demonstration, the length of the wire and adding more light bulbs affects the
amount of energy in the system. Energy is lost as both or either of these factors are
increased. We are adding resistance to the circuit. Remember:
An Electrical Circuit
Making a Rheostat!!
Wind Energy can also be used to
do work.
Harnessing the Wind
ANEMOMETER Activity
Mechanical Energy
Mechanical energy is any form of energy
that’s directly associated with motion or
with a force
Forms of mechanical energy



Gravitational (potential)
Kinetic
Elastic
Mechanical work is the transfer of energy
from one object to another
Mechanical Energy Demo
Transform into Mechanical Energy
Battery
Wire
Fan
The fan provides another way to show the effects of resistance on the circuit.
Do you remember the Anemometer?
Biomass
http://www.energyquest.ca.gov/story/chapt
er10_flash/index.html
Radiant Energy
The type of energy carried by light
Light behaves like a wave

The behavior can be demonstrated by aiming
a beam of light at a narrow hole and watching
it spread out on the other side
Longer waves are infrared
Shorter waves are ultraviolet
Radiant Energy
Beyond infrared, there are
microwaves and radio waves
At very short waves we have xrays and gamma rays
The whole range is called the
electromagnetic spectrum