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Water striders are insects that have the ability to walk across the surface of water.Which properties of water allow the water strider to do this?Choose 2 answers:Choose 2 answers:(Choice A)   Surface tensionASurface tension(Choice B)   Specific heatBSpecific heat(Choice C)   AdhesionCAdhesion(Choice D)   Capillary actionDCapillary actionStuck?

Question

Water striders are insects that have the ability to walk across the surface of water.Which properties of water allow the water strider to do this?Choose 2 answers:Choose 2 answers:(Choice A)   Surface tensionASurface tension(Choice B)   Specific heatBSpecific heat(Choice C)   AdhesionCAdhesion(Choice D)   Capillary actionDCapillary actionStuck?

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Solution

The properties of water that allow the water strider to walk across its surface are:

(Choice A) Surface tension: This is the property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules. In the case of water striders, the surface tension of water provides a sort of 'film' for the insect to walk on.

(Choice C) Adhesion: This is the property of different substances to cling to each other. In this case, the water strider's legs adhere to the water's surface without breaking it, allowing the insect to walk across.

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