Dark matter

Dark matter

Assessment

Interactive Video

Science, Physics

6th - 12th Grade

Hard

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Dark matter is invisible and its nature is unknown. Observations of spiral galaxies suggest they contain more material than can be accounted for by visible matter. Physicists propose that this is due to the gravitational effects of yet-to-be-discovered particles that interact weakly with normal matter.

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1 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What new insight or understanding did you gain from this video?

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