NUTRITION
LIPIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Water striders can walk across the surface of calm water. Their feet push the surface of the water down slightly, but they do not break the surface. Why?
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The insects are light enough so they do not break the hydrogen bonds holding the water molecules together
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The insects actually use their wings to hover slightly above the water’s surface and they only skim it with their feet.
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The insect’s feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water’s surface.
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The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
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Explanation:
Detailed explanation-1: -Water striders can walk across the surface of calm water. Their feet push the surface of the water down slightly, but they do not break the surface. Why? The insects actually use their wings to hover slightly above the water’s surface and they only skim it with their feet.
Detailed explanation-2: -Water striders are small insects that are adapted for life on top of still water, using surface tension to their advantage so they can “walk on water.”
Detailed explanation-3: -Insects can walk on water because of a phenomenon called surface tension.
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