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16 Cards in this Set
- Front
- Back
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Sedimentary rock |
Rock that is formed by deposition of material at the Earth's surface and within bodies of water. |
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Igneous rock |
Rock formed through the cooling and solidification of magma or lava. |
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Strata |
Layers of sedimentary rock or soil with internally consistent characteristics that distinguish it from other layers. |
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Steno's Law of Superposition |
In any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom. |
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Stratigraphic correlation |
Study concerned with establishing geo-chronological relationships between different areas, based on geologic investigations of many local successions. |
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Isotopes |
Variants of a particular chemical element which differ in neutron number. |
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Half-life |
The time required for half of the unstable radioactive atoms in a sample to undergo radioactive decay. |
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Foramen magnum |
A large opening in the occipital bone of the human skull. |
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Supraorbital torus |
A ridge on the frontal bone above the eye socket. |
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Sagittal crest/keel |
A ridge bone running lengthwise along the midline of the top of the skull (at the sagittal suture). |
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Prognathism |
Jaw protruding beyond coronal plane of the skull. |
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Megadontia |
Having proportionately oversized teeth. |
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Occipital bun |
A prominent bulge or projection of the occipital bone at the back of the skull. |
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Domestication |
The cultivating or taming of a population of organisms in order to accentuate traits that are desirable to the cultivator or tamer. |
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Malocclusion |
A misalignment or incorrect relation between the teeth of the two dental arches when they approach each other as the jaws close. |
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Enamel hypoplasia |
Enamel is hard but thin and deficient in amount. |
