MS-ESS1-4

Construct a scientific explanation based on evidence from rock strata for how the geologic time scale is used to organize Earth's 4.6-billion-year-old history.

More Stories in MS-ESS1-4

  1. Planets

    NASA’s Perseverance rover grabbed its first Martian rocks

    Two finger-sized pieces of stone drilled from a basalt rock are the first bits of Mars ready to be brought to Earth.

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  2. Earth

    Scientists Say: Anthropocene

    Humans are changing the world in profound ways. Some scientists think those changes have launched a new epoch in Earth’s history: the Anthropocene.

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  3. 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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  4. Space

    Cosmic filaments may have the biggest spin in outer space

    These rotating threads of dark matter and galaxies stretch millions of light-years. Scientists want to know how their spin begins.

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  5. Plants

    Dinosaur-killing asteroid radically changed Earth’s tropical forests

    The asteroid collision initially reduced the diversity in what had been sunny tropical rainforests. In time, the forests would become permanently darker.

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  6. Chemistry

    Extreme pressure? Diamonds can take it

    Diamond retains its structure even at extreme pressures, which could reveal how carbon behaves in the cores of some exoplanets.

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  7. Space

    Explainer: Stars and their families

    Most pinpoints that light the night sky are raging infernos we call stars. As adults, many will create new elements that they later cast off into the cosmos.

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  8. Space

    Spotted: Milky Way’s giant gas bubbles in visible light

    The bubbles have different colors, based on how the gas inside them moves. That could give clues to how the bubbles developed.

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  9. Earth

    A rainforest once grew near the South Pole

    A forest flourished within 1,000 kilometers of the South Pole. That was a while ago, as in millions of years ago.

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