| 2. Wind as energy |
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Wind power has been used by human beings
since time immemorial: to sail on the sea, to grind wheat and to pump
water. Nowadays, when we speak of wind power we are referring to technologies
and applications which take advantage of the kinetic energy (movement)
of the wind, converting it into electrical or mechanical power (to
pump water, for example). Today it is one of the renewable energies
with greatest potential for the future.
Wind power plants can have an environmental impact: visual impact,
on the landscape, and they may affect fauna and flora. Therefore,
environmental studies are required before building this sort of facility.
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[ enlarge image ] |
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| Ordering concepts. One concept
(A) has more extension than another concept (B)
when concept (A) is included within of the definition
of concept (B). For example: The concept ‘living
organism’ has more extension than the concept
‘animal’ because the definition of ‘animal'
includes the concept ‘living being’,
while the opposite is not so. |
| Order the following concepts from least broad to
broadest: |
| 1. |
Source of power, wind, source of electrical power.
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| 2. |
Wind, cyclone, strong wind. |
| 3. |
Air current, sea breeze, breeze. |
| 4. |
Gas, oxygen, atmospheric gas. |
| 5. |
Weather phenomenon, precipitation, snow. |
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| Painting. Paul
Joseph Constantin Gabriel, 1828-1903. In
the month of july. |
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| Find informationabout
the powers of Achelous, the Greek god of the wind, from
which we get the word Aeolian. (Can you imagine
how an aeolian harp produces sound?). |
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| © Grup IREF 2003, with the support of the European Commission, DG XXII (Socrates/Comenius 3.2) |
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