HS-PS4-1

Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media.

  1. Physics

    Gravitational waves detected yet again

    For the third time in 16 months, scientists have announced detection of gravitational waves washing over the spacetime environment in which Earth resides. This seems to show that such waves may not be rare.

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  2. Chemistry

    BPA-free plastic may host BPA-like chemical, teen finds

    Something has to replace the BPA in ‘BPA-free’ plastics. A teen has been probing what that is.

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  3. Tech

    Needle-free blood typing may be on the way

    A teen in Kuwait presents data suggesting how, one day, it may be possible to figure out your blood type just by shining infrared light into your skin.

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  4. Science & Society

    Cool Jobs: Reaching out to E.T. is a numbers game

    From figuring out if we’re alone in the universe, to writing messages to aliens, scientists use math in many ways in their search for extraterrestrial intelligence.

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  5. Health & Medicine

    Umbrella’s shade doesn’t prevent sunburn

    Sunblock may be sticky and uncomfortable, but it blocked more of the sun's harmful rays than did an umbrella, a new study found.

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  6. Genetics

    How to view tiny parts of DNA? Make them ‘blink’

    A new technique can image nanoscale structures in cells without hurting them. No dyes needed. All you have to do is stimulate them with the right color of light.

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  7. Physics

    Strange X-rays point to possible ‘dark’ matter

    Scientists have been looking for “dark” matter. It’s supposed to make up most of the universe — but it’s also invisible. X-rays may now point to where some of this weird stuff is.

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  8. Physics

    Weird physics warps nearby star’s light

    Scientists have observed a bizarre effect of quantum physics in light coming from a nearby neutron star.

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  9. Health & Medicine

    Simpler way to screen for hidden hearing loss?

    Many teens today walk around with undiagnosed hearing damage. But some Boston-based researchers have come up with a low-tech approach to screening these individuals so they can get help.

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  10. Physics

    Scientists Say: Diffraction

    When liquid hits something it spatters, when light hits something, it scatters. The process is called diffraction.

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  11. Animals

    Spidey sense: They can hear you!

    Surprise! At least some spiders can hear us. Even without eardrums, jumping spiders can still detect airborne sounds from across the room.

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  12. Tech

    Hot, hot, hot? New fabric could help you stay cool

    A plastic fabric can let body heat escape efficiently, if the material is filled with tiny bubbles of just the right size

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