Geology terms helps us to explain the phenomena that occurs above, below and on the surface of Earth. These terms can help you gain a better understanding of geology. Learn more geology terms here.


Hydrosphere, the waters of the earth. Oceans, lakes, rivers, and glaciers cover about three-fourths of the earth's surface, and groundwater is present in most rock structures.

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  • How do polymer crystals work and why do they absorb so much water?

    How do polymer crystals work and why do they absorb so much water?

    Polymer crystals are amazing in that they can absorb many times their size. In fact, one pound of these crystal flakes can hold up to 50 gallons of water. Find out what these polymer crystals are and why they are able to absorb so much water. See more »

  • Radioactive Dating

    Radioactive Dating

    Radioactive Dating, the calculation of a substance's age by measurement of the radioactive material it contains or of the amount of natural atomic fission that has occurred in the substance. See more »

  • What is a carat, and how does it relate to a karat?

    What is a carat, and how does it relate to a karat?

    My fiancee gave me a 1 carat diamond in my engagement ring. What is a carat? And how does it relate to a karat, as in "18 karat gold"? See more »

  • Alluvium


    Alluvium, the silt, clay, sand, and other material transported and deposited by running water. See more »

  • Artesian Well

    Artesian Well

    Artesian Well, a well in which water rises under its own pressure, without pumping. See more »

  • Assaying


    Assaying, a process for determining the amount of a certain metal contained in an ore or alloy. See more »

  • Cave


    Cave, an underground cavity in the earth's crust. Cavern is a synonymous word, but is sometimes used to indicate a very large cave. See more »

  • Crystal


    Crystal, a solid body formed by atoms, ions, or molecules arranged in a regular, three-dimensional pattern. See more »

  • Dike


    Dike, in geology, a body of diabase or some other igneous rock that, while in the molten state, filled a fissure (crack) in some other rock. See more »

  • Dust


    Dust, fine particles of earth or other matter capable of being carried by currents of air. See more »

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