Details Title: Ch 15 The Evolving Earth Vocab Description: Mr. Drake Phy. Sci. Total Flash Cards: 46 Created: 05/09/2007 17:04:48		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Geology Flashcards
Cards in this set: Term Precambrian= Definition Achean and Proterozoic, Life began, great volcanic activity. Term Proterozoic= Definition Life began(marine), stromatolites dominant Term Quaternary= Definition Second period of cenozoic (we live in it), Hominids develop and humans dominant, Ice age Term Replaced remains= Definition type of fossil, fossil replace w/ something else. Ex. petrified wood Term Silurian= Definition 3rd period of paleozoic, first land animals(spiders, scorpions), marine invertebrates thrive. Term Trace fossil= Definition markings left in rock(no specimen). Ex. footprints. Term Triassic= Definition 1st period in Mesozoic, reptiles thrive, dinosaurs appear. Term Absolute Dating= Definition Finds exact "date" or age of artifact. Term Daughter Nuclide= Definition Nuclide remaining after radioactive "parent" nuclide decays. Stable. Term Isochron= Definition Graph that shows ratio of parent nuclides to daughter nuclides. Term Parent Nuclide= Definition Unstable radioactive nuclide that decays to stable, "daughter" nuclide. Term Radioactive (radiometric) dating= Definition Dating technique that measures ratio of parent nuclides to daughter nuclides to figure out age. Uses Potassium-Argon, Rubidium-Strontium, Uranium-Lead. Term Radiocarbon Dating= Definition Radiometric dating that uses Carbon-14. Term Radionuclide= Definition Atom with unstable nucleus. Used in Radiometric dating. Term Relative Dating= Definition Finding age of object relative to another (not to specific age). Term Amphibian= Definition Transition between lungfish and reptile. Appeared in Devonian and thrived in Mississippian and Pennsylvanian. Term Angiosperms= Definition Flowering plant. Appeared in Cretaceous and Thrived in Paleogene. Term Arthropoda= Definition Appeared as segmented worms in Proterozoic. Ex. TRILOBITES Term Brachiopod= Definition Phylum Brachiopoda. In cludes Mucrospirifer, Platystrophia, and Atrypa. Thrived during Paleozoic. Moved by connecting itself to things using fleshy arm-foot. Term Cephalopod= Definition Phylum Mollusca. Thrived in Ordovician and Silurian. Moved by Jet propulsion. Living relatives=squid, octopus. Term Cnidaria= Definition Phylum including Corals. Thrived mostly in Cambrian. Term Colony Coral= Definition Phylum Cnidaria. Thrived/appeared in Cambrian. Ex. PETOSKY STONE and FAVOSITES Term Crinoid= Definition Phylum Echinodermata. Thrived in Orodvician. Sessile. Ex. SEA LILY Term Dinosaurs= Definition Reptiles appearing in Triassic. Had specialized hips and ankle so they were fast and coulod walk on 2 feet. Did well in dry climates b/c they conserved water. Term Echinodermata= Definition Phylum including SEA LILIES. Term Fish= Definition Link between marine invertebrates and lungfish. First vertebrates. Appeared in Cambrian.Thrived in Devonian. Term Gastropod(snail)= Definition Phylum Mollusca. Began in Proterozoic. Moved like snail. Term Gymnosperm= Definition Seed-bearing plants. Appeared in Devonian. Thrived in Mississippian. Term Mammals= Definition Appeared in Jurassic. Thrived in Cenozoic. Term Mollusca= Definition Phylum. Ranges from octopus to snails and clams. Term Pelecypod(clam)= Definition Phylum Mollusca. Thrived in Mississippian. Living relatives=scallops, clams, oysters. Moved by pulling itself around with hatchet-shaped muscle. Term Petoskey Stone= Definition Colony coral. Phylum Cnidaria. Thrived in Cambrian. Term Reptiles= Definition Link between amphibians and mammals. Thrived in Mesozoic. Term Solitary coral= Definition Phylum Cnidaria. Shaped like Horn (i.e. horn coral). Thrived in ordovician. Term Stromatolites= Definition Fossil of blue-green algae. Dominat in Proterozoic. Term Trilobites= Definition Phylum Arthropoda. Dominant Cambrian+Orodvician. Died out Permian. Good Index Fossil. Term 3 things needed for index fossil: Definition 1. Be extinct. 2. Short-lived. 3. Not common. Term Panthalusa sea=? Definition Pacific Ocean Term Convection currents rising=? falling=? Definition Rising=diverging plates Falling=converging. Term Triassic climate= Definition Long dry periods, very shot wet periods. Term Jurassic climate= Definition Very hot and wet, no ice caps. Term Cretaceous climate= Definition Rainforesty, but not as much as jurassic. Term Major geologic movement during jurassic= Definition Gondwana and Laurasia split. Term Who was Alfred Wegener? Definition Came up with theory for continental drift. Term In sequence of sedimentary rocks with coarsest at bottom, sea levels must have_______. Definition transgressed Term In sequence of sedimentary rocks with finest at bottom, sea levels must have_______. Definition regressed