HS-PS1-8

Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.

More Stories in HS-PS1-8

  1. Earth

    Not one, but two asteroids might have ended the age of dinosaurs 

     A craterlike structure found off the coast of West Africa might have been formed by an asteroid that struck around the time dinosaurs went extinct.

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  2. Fossils

    Great white sharks may be partly to blame for the end of megalodons

    Zinc levels in shark teeth hint that megalodons and great whites competed for food — and great whites won.

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  3. Physics

    Scientists Say: Proton

    These positively charged particles are important building blocks in atoms.

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  4. Earth

    Tiny gemstones show when Earth’s crust first started moving

    Chemical hints observed in zircons suggest when the important process of plate tectonics first took off.

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  5. Ecosystems

    Scientists Say: Decay

    This word can refer to rotting flesh or the transformation of radioactive atoms.

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  6. Animals

    Tiny animals survive 24,000 years in suspended animation

    Tiny bdelloid rotifers awake from a 24,000-year slumber when freed from the Arctic permafrost.

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  7. Physics

    Nuclear clocks are nearly here

    More precise clocks could improve technologies such as GPS and help scientists test major ideas in science.

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  8. Animals

    Traces from nuclear-weapons tests offer clues to whale sharks’ ages

    Traces left by nuclear-bomb testing in the 1950s and ‘60s can help researchers learn how old a whale shark is.

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  9. Space

    Black hole mega-burp was truly explosive

    Long, long ago, in a galaxy far, far away, a black hole blasted out 100 billion times as much energy as our sun ever will. One word for that: Wow!

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