This property of a liquid's surface helps water striders walk across it.

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Your new ahaSurface Tension

Surface Tension: Force that causes the surface of a liquid to resist an external force. Source: Surface tension ↗

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26A changing magnetic field generates an electromotive force through this process used in dynamos.RECALL
Electromagnetic Induction
Electromagnetic induction, discovered by Michael Faraday, generates current from a changing magnetic field, as in a bicycle dynamo.
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27Particles spread from higher to lower concentration through this process.RECALL
Diffusion
Diffusion spreads particles from areas of high to low concentration, coloring a whole glass of water from one drop.
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01Newton's universal law describes this attraction between masses.RECALL
Gravity
Gravity pulls every mass toward every other mass, a relationship Newton captured in his law of universal gravitation.
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