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Movement Of Water Is Often:
No part of the ocean is completely still, although, in the ocean depths, the movement of water is often extremely slow. Exploration of the deeper parts of the oceans has revealed the existence of marine life. If the water were not in motion, the oxygen - upon which life depends - would soon be used up and not replaced. Life would therefore be impossible. The discovery that all ocean water moves is of great significance.Take a bucket of tepid, not cold, water into the garden and plunge the cut stems directly into it. (Cold water to a flower has the same effect as a cold Shower to a gardener: Shock!) Use a sharp Knife or scissors to cut the stems, and take more length than you think you might need to ensure plenty of stem for flower arranging. When cutting, never pull at the stem. This can bruise and damage cell walls, restricting the free movement of water. Cut flowers continue living and need all the water the stems can take in.
Eroded material is transported along the coast mainly by wave action. Waves usually strike the shore obliquely. As they move forward, they sweep material diagonally up the beach. As the water recedes, the backwash pulls the loose fragments down the steepest slope at right-angles to the shore. This zigzag movement, called longshore drift [3], moves sand and pebbles along the coast. Currents and tides also contribute to the movement of eroded material.
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