Τετράδιο Εργασιών, σελ. 194 - 197.
Τετράδιο Εργασιών, σελ. 194 - 197.
It's hard to pull the newspaper up.
It's easy to pull the newspaper up.
Τετράδιο Εργασιών, σελ. 194 - 197.
The suction cup sticks to a smooth surface, but not to a rough one.
If I lift the suction cup a little from the side, I can easily detach it.
Τετράδιο Εργασιών, σελ. 194 - 197.
If I let air get under the ephemera or suction cup, I can easily lift them.
Τετράδιο Εργασιών, σελ. 194 - 197.
The ballon gets bigger.
Τετράδιο Εργασιών, σελ. 194 - 197.
Τετράδιο Εργασιών, σελ. 194 - 197.
Τετράδιο Εργασιών, σελ. 194 - 197.
Air has weight. Because of its weight, it causes pressure called atmospheric pressure. Atmospheric pressure decreases as the height above sea level increases.
Τετράδιο Εργασιών, σελ. 194 - 197.
1. Why does the box deform as we drink the juice?
The box crumples due to atmospheric pressure, since there is no air inside it.
Τετράδιο Εργασιών, σελ. 194 - 197.
2. If we make a second hole in the box, will it deform as we drink the juice? Can you explain your answer?
If we drill a second hole in the box, it will not wrinkle since the pressure will be the same inside it.
Τετράδιο Εργασιών, σελ. 194 - 197.
3. The Moon has no atmosphere. Can the astronaut use the suction cup?
He can't use the suction cup because there is no air to exert force.
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