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

    Scientists used lasers to make ‘smoke rings’ of light

    Physicists had a bright idea: Make light into swirling, ring-shaped vortices, similar to smoke rings or bubble rings.

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  2. Planets

    Noises sound totally different on Mars than on Earth. Here’s why

    The Perseverance rover recorded the sound of laser pulses on Mars. Scientists used those recordings to determine the Martian speeds of sound.

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  3. Climate

    Coastal cities around the world are sinking, satellite data show

    Of 99 coastal cities studied, nearly one-third are sinking. This leaves coastal communities increasingly vulnerable to rising seas.

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  4. Animals

    Orb-weaving spiders use their webs like external eardrums

    Scientists discover that orb-weaving spiders listen with their legs, detecting sound vibrations that travel through their silken webs.

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  5. Space

    A star called ‘Earendel’ could be the most distant ever seen

    A thin red arc found in an image from the Hubble Space Telescope shows starlight from nearly 13 billion years ago.

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  6. Physics

    Muons reveal the inner worlds of pyramids, volcanoes and more

    Tracking these subatomic particles can uncover surprising hidden structures.

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  7. Space

    Gravitational waves ‘kicked’ a newborn black hole across space

    Two black holes merged into one, and then sped off at around 5 million kilometers (3.1 million miles) per hour.

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  8. Space

    Some of the sun’s iconic coronal loops may be ghostly illusions

    Wrinkles in the sun’s outer atmosphere might trick the eye into seeing glowing arches, scientists now report.

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  9. Space

    We finally have an image of the black hole at the heart of our galaxy

    New observations from the Event Horizon Telescope reveal the chaotic region around the Milky Way’s central black hole, Sagittarius A*, in extreme detail.

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