What if Earth suddenly stopped spinning?

xkcd's What If?
9 Jan 202404:35

Summary

TLDRThe video explores the catastrophic consequences of Earth suddenly stopping its rotation while the atmosphere retains its velocity. At the Equator, winds would reach supersonic speeds, devastating structures and leading to widespread destruction. While many would perish, some, including those underground or at research stations, might survive. The event would trigger massive oceanic turbulence and global thunderstorms, leading to extreme temperature variations as the Earth settles into a new rotation cycle. The Moon's gravitational pull would gradually restore some rotational speed, creating a bizarre new reality of extended days and nights.

Takeaways

  • 😀 If the Earth stopped spinning while the atmosphere retained its velocity, catastrophic winds would devastate most human structures.
  • 🌪️ At the Equator, winds could reach supersonic speeds of over 470 m/s, impacting a large portion of the global population.
  • 🏚️ While few above ground would survive the initial chaos, many underground shelters and certain remote research stations might endure.
  • 🌊 The sudden winds would churn the oceans, causing massive storm surges and potentially overwhelming coastlines.
  • 🌫️ As the winds die down, a fog would blanket the oceans, leading to significant temperature drops.
  • ☀️ Without rotation, one side of the Earth would experience continuous sunlight for six months, while the other side would be in perpetual darkness.
  • 🌍 The Earth's orbit would still cause the Sun to rise and set once a year, altering the concept of day and night drastically.
  • 🌒 The Moon would continue to exert gravitational pull, gradually affecting the Earth's rotation again over time.
  • ⚠️ Human civilization would face unprecedented challenges due to structural collapses and extreme weather events.
  • 🔄 The scenario serves as a thought experiment about the interconnectedness of Earth's systems and the consequences of sudden changes.

Q & A

  • What would happen if the Earth stopped spinning suddenly?

    -If the Earth stopped spinning, nearly everyone would die due to extreme winds generated by the atmosphere, which would continue moving at high speeds.

  • How fast is the Earth's surface moving at the Equator?

    -At the Equator, the Earth's surface moves at about 470 meters per second, or over 1,000 miles per hour.

  • What kind of winds would occur as a result of the Earth's sudden stop?

    -Supersonic winds would occur, reaching speeds that could devastate structures and the landscape.

  • How would the winds affect human structures?

    -Most human structures would be reduced to ruins due to the extreme wind speeds, even those designed to withstand high winds.

  • Would there be any survivors if the Earth stopped spinning?

    -Yes, some people could survive underground or in remote research stations, such as those at the South Pole.

  • What would happen to the oceans if the Earth stopped spinning?

    -The oceans would experience severe turbulence, leading to massive storm surges and the creation of thunderstorms.

  • What would the new day-night cycle look like after the Earth stops rotating?

    -The Earth would experience a day-night cycle lasting a year, with half the planet in constant daylight and the other half in prolonged darkness.

  • How would temperatures be affected on the Earth's surface?

    -On the day side, temperatures would soar due to constant sunlight, while the night side would experience extreme cold.

  • What role would the Moon play after the Earth's rotation ceases?

    -The Moon would gradually help to restore some rotation to the Earth through its gravitational pull, although very slowly.

  • What would be the long-term effects of the Earth's rotation stopping?

    -The long-term effects would include drastic climate changes, altered ecosystems, and potential extinction of many species.

Outlines

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Earth ScienceNatural DisastersSurvival ScenariosAtmospheric EffectsGlobal CatastropheWeather ImpactScientific ExplorationClimate ChangeHuman ResilienceCosmic Events
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