| 8. Oxygen |
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We need to breathe in order
to live and in order to breathe we need a gas that is
in the air called oxygen. Most living organisms on our
planet need oxygen to obtain energy through the combustion
of food in their cells. In general, the amount of oxygen
that we need depends on the activity we are doing. For
example, when we engage in some strenuous activity, we
use a lot of energy, and therefore we need more oxygen
and we breathe faster; when we sleep or rest, we need
to less energy, and therefore less oxygen and our breathing
is slower.
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| Arranging activities in series. To arrange
in series is to organise, to sequence, to put one thing after the
other, not in any old way, but meaningfully. It is a matter of
ordering a set of objects, features or actions that are mixed up,
or that may be confused or chaotic. |
| Order the following activities according
to the criterion of the amount of oxygen needed
to do them: |
| 1. |
running |
| 2. |
speaking |
| 3. |
eating |
| 4. |
studying |
| 5. |
swimming |
| 6. |
reading |
| 7. |
riding a horse |
| 8. |
taking a nap |
| 9. |
playing golf |
| 10. |
walking |
| 11. |
driving a lorry |
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Music. Listen to Atmospheres
by György Ligeti, from the film: 2001, Space
Odyssey. |
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| Painting. Gustave
Caillebote , 1848-1894. The
Floor Scrapers. |
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| © Grup IREF 2003, with the support of the European Commission, DG XXII (Socrates/Comenius 3.2) |
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