Term
| What are the layers of earth's interior? |
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Definition
| Crust, Lithosphere, Asthenosphere, Mantle, Inner Core and Outer Core |
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Term
| What two types of evidence do scientists rely on to learn about Earth's interior? |
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Definition
| Direct evidence from rock samples & indirect evidence from seismic waves |
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Term
| What is the difference between direct and indirect evidence and give an example of each? |
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Definition
Direct - rock - solid, take samples
Indirect - seismic wave - harder to measure/no direct sample |
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Term
| If you were to take a journey to the center of the Earth, what would you experience in terms of temperature and pressure? |
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Definition
| It gets hotter and the pressure gets higher as you get deeper into the center of the Earth. |
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Term
| Both dry land and the ocean floor is a layer of solid rock that makes up which layer of the earth. |
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Definition
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Term
| Which is thicker, oceanic or continental crust? |
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Definition
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Term
What is the composition of:
continental crust?
oceanic crust |
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Definition
rock (granite)
rock (basalt) |
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Term
| Which is denser, continental or oceanic? |
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Definition
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Term
| Describe the Earth's mantle. |
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Definition
layer of hot rock
solid
3000 km thick
different layers - upper is lithosphere & athenosphere / lower mantle |
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Term
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Definition
| rigid layer made up of uppermost part of mantle and crust |
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Term
| What is the asthenosphere? |
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Definition
| soft layer of mantle on which lithosphere floats |
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Term
| Describe the core - which is solid and which is liquid? |
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Definition
Outer core is molten material (liquid) that surrounds the inner core
Inner core is dense ball of solid metal |
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Term
| Why did geologists consider the inner core and the outer core as part of the same layer instead of as separate layers? |
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Definition
both made of iron and nickel -
outer core - liquid
inner core - solid |
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Term
| What are the three types of heat transfer? |
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Definition
Convection
Radiation
Conduction |
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Term
| How are convection currents created/put in motion? |
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Definition
Heating & cooling of the fluid
changes in fluid's density
force of gravity combined |
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Term
| Where does the heat come from to create convection currents in the mantle? |
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Definition
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Term
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Definition
vibrations that travel through Earth
carry energy that is released during earthquake |
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Term
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Definition
| force extended on a surface divided by total area over which force is exerted |
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Term
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Definition
| layer of rock that forms Earth's outer skin |
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Term
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Definition
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Term
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Definition
| layer of molten metal that surrounds inner core |
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Term
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Definition
| dense ball of solid metal |
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Term
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Definition
| transfer of energy through space |
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Term
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Definition
| heat transfer within a material or between materials |
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Term
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Definition
| heat transfer by movement of currents within a fluid |
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Term
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Definition
| measure of how much mass there is in the volume of a substance |
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Term
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Definition
| the flow that tranfers heat within a fluid |
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