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Hi, I'm Zola Vanessa, with more science news you can use.

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I've got a question for you.

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What makes bubbles round?

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Let's figure it out.

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Water molecules are held together by electrical forces.

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Positive and negative charges attract each other.

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The surface molecules pull together.

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Normally these strong attractive forces would cause water molecules to form droplets.

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But add soap to water and the attraction is reduced.

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This allows the bubble to form.

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And the foamy skin of the bubble is kept round by air pressure inside,

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which is equal on all parts of that very thin skin.

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Until next time, I'm Zola Vanessa, with more science news you can use.

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NASA Jet Propulsion Laboratory, California Institute of Technology