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Chapter 1 review
| Question | Answer |
|---|---|
| What is the outermost layer of Earth | Crust |
| What is the biggest layer of Earth | Mantle |
| What is the 2nd inner layer of Earth | Outer Core |
| What is the intermost layer of Earh | Inner Core |
| What are the two types of evidence that scientists use | In-direct and Direct evidence |
| Name two examples of In-direct evidence | Cannot see, earthquakes, etc. |
| Name two examples of Direct evidence | Rock samples, seismic waves, etc. |
| What rocks are found in the oceanic crust | Basalt |
| What rocks are found in the continental crust | Granite |
| What differentiates the lithosphere from the asthenosphere? | Lithosphere on top of mantle Asthenosphere on bottom of mantle |
| What are the three types of heat transfer | Radiation, Convection, and Conduction |
| Give an example of radiation | Open flame, Sun's rays |
| Give an example of convection | Water in a pot |
| Give an example of conduction | A pot on the stove |
| What causes convection currents | Heat flow |
| How does density affect a convection cell | The hotter the less dense |
| What causes convection currents in the mantle | Pressure |
| What is the source of heat that drives a convection current in Earth | The core |
| Who was Alfred Wegner | The man who came up with the theory of continental drift |
| What was Wegner's theory | Earth's plates were once together and since then have drifted apart |
| What three pieces of evidence supported Wegner's theory | Climate change, fossils and, the shape of continents |
| Why was Wegner's theory rejected by most scientists | He didn't know how it happened. |
| What is the definition of Continental drift | The theory that stated that the plates moved apart slowly over time |
| What is the definition of Pangea | A supercontinent that broke apart about 225 million years ago |
| What is the definition of Fossil | A preservation of an organism that died long ago |
| Describe the process of Sea-Floor spreading | Oceanic crust gets ripped apart and molten material from underneath hardens creating new material |
| What evidence is there for Sea-Floor spreading | Molten Material, Magnetic stripes, and drilling samples |
| What occurs at deep ocean trenches | The process of subduction |
| How is convection currents related to subduction | In subduction it goes along the crust and then sinks down, then repeats |
| Expand why the ocean floors are shrinking/expanding | Some oceans have more trenches then others |
| Describe the theory of plate tectonics | The theory that Earth's plates are in constant motion due to convection currents |
| What are the three types of plate boundaries | Divergent, Convergent, Transform |
Created by:
nathantolva
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