Page 43 - Science Course 2 (Book 2)
P. 43
Mo9-L1a: What is Energy Transformation?
Energy Conservation When a plant carries on photosynthesis, it
transforms radiant energy from the Sun into
The law of conservation of energy says that energy chemical energy.
can be transformed from one form to another, but it
cannot be created or destroyed. The chemical energy is stored in the bonds of the
plant’s molecules.
Even though energy can change forms, the total
amount of energy in the universe does not change.
It just changes form.
When electric energy plants
burn fossil fuels, they
Key Concept transform the chemical
energy from the
What is Energy Transformation? molecules that were
made by plants
What is the law of conservation of energy?
that lived millions
of years ago.
That chemical
energy is transformed
to the electric energy
that you use in your home and school.
Key Concept
What is Energy Transformation?
Identify three energy transformations that occur to
make eletic energery.
When you ride a roller coaster, your gravitational
potential energy is transformed to kinetic energy and
back to gravitational potential energy.
GPE : High
KE : Low
SUMMARY
What is Energy Transformation?
Energy is always conserved.
Energy can be transformed into different kinds
of energy.
GPE : Low
KE : High
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