MS-PS4-2

Develop and use a model to describe that waves are reflected, absorbed, or transmitted through various materials.

More Stories in MS-PS4-2

  1. Physics

    Here’s how quantum mechanics lets heat cross a vacuum

    Heat can move across a vacuum if the span is small enough. As in really, really small. In a new experiment, the gap was only a few hundred nanometers.

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  2. Archaeology

    Ancient Egyptian mummy tattoos come to light

    A range of markings discovered on female mummies are challenging ideas about tattoo traditions in ancient Egypt.

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  3. Materials Science

    The future of crystal-based solar energy just got brighter

    Researchers have upped the efficiency of layered solar cells that could be printed or painted onto surfaces. Now they are working to make them more rugged.

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  4. Animals

    Whales echolocate with big clicks and tiny amounts of air

    Toothed whales may echolocate using bits of air that they recycle inside their heads to conserve both air and energy.

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  5. Physics

    Tests challenge whether centuries-old violins really are the best ever

    Some centuries-old Italian violins are reputed to be the best ever made. Scientists tested that. Their data now show new instruments can sound at least as good — and sometimes better.

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  6. Climate

    Hotspots found for lightning’s superbolts

    A nine-year survey reveals where and when the most energetic lightning strikes — and it’s not what scientists expected.

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  7. Earth

    Explainer: Earth — layer by layer

    Explore the sizzling heat, unimaginable pressures — and some surprise diamonds — that sit beneath our feet. This is the side of Earth that you can’t see.

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