Τετράδιο Εργασιών, σελ. 191 - 193.
Τετράδιο Εργασιών, σελ. 191 - 193.
The balloon gets bigger.
The balloon gets ever bigger.
Τετράδιο Εργασιών, σελ. 191 - 193.
The water in the bottom hole goes further. When we stop adding water, the container slowly empties and the water no longer reaches as far.
Τετράδιο Εργασιών, σελ. 191 - 193.
Water exerts pressure due to its weight. We call it hydrostatic pressure. Hydrostatic pressure increases as depth increases.
Τετράδιο Εργασιών, σελ. 191 - 193.
1. Can you explain the slight pain in your eardrum when you dive in the sea?
My ear hurts because of hydrostatic pressure. The pain is worse when I dive deep, because water pressure increases with depth.
Τετράδιο Εργασιών, σελ. 191 - 193.
2. Observe the picture. The base of the dam is thicker than the top. Can you explain why?
The base of the dam is rougher than its top, because the hydrostatic pressure is greater at the bottom than at the surface.
Τετράδιο Εργασιών, σελ. 191 - 193.
3. Submarines, in order to be able to dive to great depths, are made of very durable materials. Can you explain why?
3. Submarines are made of very durable materials to withstand the pressure at very great depths.
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