A1.1.8 - Relationship between the search for extraterrestrial life and the presence of water

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Last updated 9:36 PM on 10/16/26
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4 Terms

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Goldilocks zone

  • Region around a star where conditions are “just right” for liquid water to exist on a planet’s surface


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Temperature Determines Water'‍s State

  • Too ‍close to the star: Temperatures too high ‍→ water evaporates → exists only as vapor.

  • Too ‍far from the star: Temperatures too low ‌→ water freezes → exists only as ice.‌

  • Just right (Goldilocks zone): Temperatures allow ‍water to remain liquid.


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Finding ⁣Water Means Finding Life

  • Water is ‌the medium for metabolism and biochemical reactions

  • All known life on ‍Earth requires liquid water to function.

  • Without liquid ‍water, the complex chemical processes needed for ‌life as we know it cannot occur.


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Life and Water

  • Cohesion

  • Adhesion

  • Surface tension

  • Solvent

  • Viscosity

  • Thermal Conductivity

  • Specific Heat