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12 Cards in this Set

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