Earth History

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Uniformitarianism Noun

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[yoo-nuh-fawr-mi-tair-ee-uh-niz-uhm]

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Principle of Original Horizontality Noun

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[prin-suh-puhl uv uh-rij-uh-nl hawr-uh-zon-tal-i-tee]

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Principle of Superposition Noun

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[prin-suh-puhl uv soo-per-puh-zish-uhn]

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Lithosphere Noun

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[lith-uh-sfeer]

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Asthenosphere Noun

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[as-then-uh-sfeer]

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Plate Tectonics Noun

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[pleyt tek-ton-iks]

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Pangaea Noun

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[pan-jee-uh]

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Seafloor Spreading Noun

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[see-flawr spred-ing]

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Subduction Noun

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[sub-duhk-shuhn]

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Weathering Noun

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[weth-er-ing]

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