Term
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Definition
| Vibrations in the Earth caused by Earthquakes. |
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Term
| Give examples of direct and indirect observations. |
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Definition
Direct Examples: Taking samples, Cave Exploration, Drilling
Indirect: Seismic waves, Vibrations in earth caused by earthquakes. |
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Term
| How thick is the continental crust? |
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Definition
| 35kilometers, or 35,ooo meters. |
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Term
| How thick it the oceanic crust? |
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Definition
| 7 kilometers or 7,000 meters. |
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Term
| What are lithospheric plates? |
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Definition
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Term
| Who was Andrija Mohorovicic? |
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Definition
| He discovered the moho (the layer between the crust and the mantle). |
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Term
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Definition
| Between the mantle and the crust. |
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Term
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Definition
| The transitional layer between the mantle and crust. 30 kms thick. |
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Term
| Which elements make up the earths crust? |
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Definition
| Silicon, oxygen, Aluminum, and Iron. |
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Term
| Which elements make up the Earths Mantle? |
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Definition
| Silicon, oxygen, and aluminum. |
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Term
| How thick is earths mantle? |
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Definition
| 2,900km or 2,900,000 meters. |
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Term
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Definition
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Term
| What is the temperature at the top of the mantle? |
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Definition
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Term
| What is the temperature at the bottom of the mantle? |
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Definition
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Term
| What are convection currents? |
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Definition
| When heat rises and cold sinks. |
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Term
| Why are convection currents important? |
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Definition
| They are what moves the tectonic plates. |
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Term
| How thick is the outer core? |
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Definition
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Term
| What is the temperature of the outer core? |
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Definition
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Term
| Which layer of the Earth is a liquid? |
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Definition
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Term
| How thick is the inner core? |
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Definition
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Term
| What is the inner core composed of? |
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Definition
| Nickel (NI) and Iron (FE) |
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Term
| Why isn't the inner core a liquid? |
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Definition
| The pressure of all the other rocks and stuff on top of it. |
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Term
| Who propsed the theory of Continental Drift |
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Definition
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Term
| Descibe the evidence that Wegener had to support his theory? |
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Definition
| The rocks that were similar and the animals and the puzzle. |
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Term
| Why wasn't Wegener theory accepted widely at the time? |
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Definition
| He didn't know what force could move the plates. |
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Term
| How is the modern Plate Techtonics Therory different than Wegener's? |
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Definition
| we now know that convections currents |
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Term
| How is the modern Plate Techtonics Therory different than Wegener's? |
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Definition
| we now know that convections currents |
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Term
| What is the Asthenosphere? |
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Definition
| The upper part of the mantle that the plates float on. |
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Term
| What are mid-ocean ridges? |
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Definition
| a Mountian chain under the ocean along the edge of a plate usually. |
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Term
| What are mid-ocean ridges? |
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Definition
| a Mountian chain under the ocean along the edge of a plate usually. |
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Term
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Definition
| The super continent 300 million years ago |
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Term
| How long ago did the Pangea break up? |
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Definition
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Term
| What were Lurasia and Gondwanaland |
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Definition
| 2 continents that were first made when Pangea split up. |
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Term
| How do scientist locate the edges of the plates? |
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Definition
| They record Earth quakes and volcanoes and then connect the dots. |
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