HS-PS4-1
Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media.
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- Earth
Tsunami’s trek traced in the sky
Scientists photograph atmospheric ripples that followed the March tsunami across the Pacific.
- Tech
Lasers of a feather
A nifty light trick in bird feathers inspires researchers to create a new kind of laser.
- Environment
Underwater racket
The oceans are getting louder, and scientists want to know what that means for marine residents.
- Physics
Explainer: What is a laser?
Lasers are the brightest source of light on Earth and produce the purest form of color possible.
- Animals
A Sense of Danger
Can animals warn us if an earthquake or some other natural disaster is about to strike?
