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12 Cards in this Set
- Front
- Back
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Astronomy
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the study of the the universe
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Protoplanet
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hypothetical whirling gaseous masses within a giant cloud of gas and dust rotating around the sun
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Geology
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the study of the earth's surface and interior
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Photosynthesis
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the process by which green plants manufacture sugars and starches from carbon dioxide and water in the presence of sunlight
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Outer Core
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surrounds the inner core and is made of liquid iron and nickel
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Mantle
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this is a thick layer os heavy rocks rich in compounds of iron, magnesium, and silicon that reaches almost to earth's surface
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Inner Core
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the center of the earth and it is made of solid iron and nickel
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Protoplanet Hypothesis
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a great cloud of gas and dust was gradually transformed into the planets and natural satellites that make up the solar system
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Hypothesis
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an informed guess that tries to explain how or why an event occurs
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Crust
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outer layer of earth that covers earth's mantle
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Oceanography
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the study of the oceans
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Meteorology
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the study of the earth's atmosphere
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