Term
| Relative age is used to determine? |
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Definition
| The sequential order of events, but not their age in years. |
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| Principle of Superposition was a important early contribution to the field of geology. It was written by? |
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| The scientist who suggested using radioactive decay to age-date Earth was? |
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| Uniformatarianism was first developed by? |
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Definition
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Term
| The amount of time it takes for half of the radioisotopes in a sample to decay into their sable end products is called? |
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Definition
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Term
| The shortest-duration units of the geologic time scale are? |
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Definition
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Term
| The longest-duration units of the geologic time scale are? |
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Definition
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Term
| Earth is only 10,000 years old? T/F? |
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Definition
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Term
| Fossils played no role in developing the geologic time scale? T/F? |
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Definition
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Term
| The radioactive isotope 14C (Carbon-14) decays into 14N (Nitrogen-14)? T/F? |
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Definition
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Term
| The Earth was formed in the ______? |
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Definition
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Term
| The oldest known fossils on Earth are most similar to? |
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Definition
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Term
| Earths only atmosphere apparently lacked? |
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Definition
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Term
| Stromatolites are found in rocks as old as? |
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Definition
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Term
| Photosynthesis by bacteria produced _______ as a waste product? |
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Definition
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Term
| The first eukaryotic fossils are? |
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Definition
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Term
| A symbolic relationship in which both organisms benefit is called? |
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Definition
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Term
| Multi-cellular organism first appeared during the? |
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Definition
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Term
| The first land animals belong to which group? |
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Definition
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Term
| Mitochondria & chloroplasts are thought to have originated as prokaryotic endosymbionts? T/F? |
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Definition
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Term
| Human beings were present on Earth from the beginning of the Precambrian? T/F? |
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Definition
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Term
| The first form of life were simple eukaryote cells? T/F? |
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Definition
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Term
| The following are period of the Paleozoic era, except? |
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Definition
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Term
| The largest, most devastating mass extinction in Earths history occurred? |
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Definition
| At the end of the Permian Era |
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Term
| Which of these animal group was NOT present by the end of the Cambrian? |
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Definition
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Term
| The great coal deposits of the Northern Hemisphere formed during the...? |
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Definition
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Term
| The first forest of trees appeared during...? |
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Definition
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Term
| Crinoids are which type of organism? |
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Definition
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Term
| Flying insects evolved by at least the...? |
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Definition
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Term
| The first land vertabrates appeared in the...? |
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Definition
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Term
| Human beings were present on Earth from the beginning of the Paleozoic? T/F? |
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Definition
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Term
| The mass extinction occurred near the end of the Devonian Period? T/F? |
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Definition
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| The cause of the Permian mass extinction is well understood? T/F? |
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Definition
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Term
| Cycads and Ginkgoes were important plants to the worlds terrestrial ecosystems during the...? |
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Definition
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Term
| Dinosaurs evolved first in the...? |
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Definition
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Term
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Definition
| May have had some degree of endothermy (a way to control body temperature) were archosaurs & went extinct at the end of Cretaceous |
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Term
| Ichthyosaurs first evolved during the...? |
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Definition
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Term
| Flowering plants evolved first in the...? |
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Definition
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Term
| Which of these organisms did NOT survive and diversify during the Mesozoic following following the Permian extinction? |
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Definition
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Term
| Which of these is NOT an aquatic reptile group? |
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Definition
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Term
| Human being were not present on Earth from the beginning of the Mesozoic? T/F? |
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Definition
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Term
| An asteroid or comet impact likely played a role in the Cretaceous mas extinction? T/F? |
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Definition
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Term
| Pterosaurs are a type of flying Reptile? T/F? |
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Definition
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