Geologic Time

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What is Geologic Time?

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Geologic Time is the timeline of Earth's history, divided into eons, eras, periods, epochs, and ages, used to describe the timing and relationships of events in Earth's history.

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What is Relative Dating?

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Relative Dating is a method used to determine the age of rocks and fossils in relation to one another, without determining their exact age.

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What is Absolute Dating?

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Absolute Dating is a method used to determine the exact age of a rock or fossil, often using radioactive decay.

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What does the Law of Superposition state?

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The Law of Superposition states that in undisturbed sedimentary rock layers, the oldest layers are at the bottom and the youngest layers are at the top.

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What is a Fossil?

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A fossil is the preserved remains or traces of ancient organisms, often found in sedimentary rock.

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What is Erosion?

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Erosion is the process by which soil and rock are removed from the Earth's surface by natural processes such as wind or water.

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What is Weathering?

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Weathering is the breaking down of rocks and minerals into smaller pieces by physical, chemical, or biological processes.

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What is a Fault?

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A fault is a fracture or zone of fractures between two blocks of rock, which can cause earthquakes.

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What is a Sedimentary Rock?

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Sedimentary rock is a type of rock formed by the accumulation and compaction of mineral and organic particles.

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What is a Trilobite?

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A trilobite is an extinct marine arthropod that lived during the Paleozoic era, known for its hard exoskeleton and segmented body.