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| Question | Answer |
| Where was the oldest fossil found and how old was it | Australia, 3.5 by |
| What features form at a convergent oceanic-oceanic boundar | trench mountains island arcs |
| The East African Rift Valley is formed along what type of plate boundary | divergent |
| How long ago did Pangaea exist | 180-300 million years |
| What are the names of the four geologic eras | Cenozoic, Paleozoic, Mesozoic, Precambrian |
| How do index fossils help determine the age of a rock | infer that rocks must be from same age as fossils |
| What organisms dominated life during the Precambrian time | bacteria |
| which relative dating law says that the oldest layer is on the bottom | superposition |
| what is the half-life of carbon-14 | 5730 years |
| how is seafloor spreading different from continental drift | seafloor spreading is the creation of new ocean floor |
| who developed the theory of continental drift | Alfred Wegener |
| What was missing from Alfred Wegener's proposal of continental drift | mechanism for movement |
| What are 5 pieces of evidence that Pangea once existed | coal beds, fossils, puzzle fit, climate, rocks |
| What is the force that drives plate tectonics | convection in the mantle |
| at which type of plate boundary is crust neither created nor destroyed | transform |