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Surface tension.
Translated that means that the attraction between the water molecules (to each other) is greater than the force (gravity) pushing the needle down.
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∙ 13y ago
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What makes a needle to float in water?
Water surface tension hold the needle on the water surface.
How does a needle float on water?
the way it float is surface tension!!
Why can a sewing needle can float on the surface of water in a glass.?
Surface tension
Why does a solid needle placed horizontally on the surface of the water float?
Due to surface tension
Why is it that a needle may float on a clean water but sink when detergent is added to the water?
Because the detergent reduces the surface tension of the water.
What makes a needle to float in water?
Water surface tension hold the needle on the water surface.
How does a needle float on water?
the way it float is surface tension!!
Explain why a swing needle can float on the surface of water in a glass?
Due to surface tension, the upper surface of water acts like a stretched membrane which enables it to float a swing needle.
Why can a sewing needle can float on the surface of water in glass?
Surface tension
Why can a sewing needle can float on the surface of water in a glass.?
Surface tension
Why can a sewing needle can float on the surface water in a glass?
Yes if the surface tension of the water is not broken. If you are careful you can place a needle on the surface of the water in a glass. Also if you reduce the surface tension with detergent (just a very little is enough) the needle will sink because it's density is greater than that of the water. NO (if the surface tension of the water is broken, a needle cannot float on the surface of water. This is because the needle has higher density than water (density is mass divided by volume).
Why does a solid needle placed horizontally on the surface of the water float?
Due to surface tension
Why is it that a needle may float on a clean water but sink when detergent is added to the water?
Because the detergent reduces the surface tension of the water.
Can a needle float in soapy water?
Yes it is not possible. Because as soap is added then surface tension would get reduced and so possibility of float becomes less. When we carefully place the same needle on ordinary water floating is quite possible as water has more surface tension
How can a sewing needle float on the surface of water?
The needle does not break the surface tension (meniscus). Get a small piece of toilet tissue and lay it on a glass of water. lay a needle on the tissue. The tissue will become sodden and sink, leaving the needle floating on the surface tension. Put the smallest drop of washing-up liquid on the water. The surface tension will be destroyed and the needle will sink. Try it.
Does the needle float or sink in water?
A needle sink in water.
What liquids can a needle float on?
A needle can be made to float on very still water.
