114008
Description
Flashcards by ericaguppy, updated more than 1 year ago
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Created by ericaguppy
about 11 years ago
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| Question | Answer |
| What are the three types of plate margins? | Destructive, Constuctive and Conservative |
| Destructive Plate Margins | -When two plates are moving towards eachother. -Where an oceanic plate meets a continental plate, the denser oceanic plate is forced down into the mantle. This often creates volcanoes and ocean trenches. -Where two continental plates meet, the plates smash together but no crust is destroyed. |
| Constructive Margins | -When two plates are moving away from each other. -Magma (molten rock) rises from the mantle to fill the gap and cools. Creating a new crust. |
| Conservative Margins | -When two plates are moving sideways past eachother, or are moving the same direction but in different speeds. Crust isn't created or destroyed |
| Destructive Plate Margin | |
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Image:
conservative.gif (image/gif)
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Conservative Plate Margin |
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Image:
constructive (image/jpg)
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Consructive Plate Margin |
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Image:
05.gif (image/gif)
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Inner Core(Yellow) Outer Core(Orange) Mantle(Red) Crust(The Outside) |
| What is the Earth's surface serperated into? | Tectonic Plates |
| The centre of the earth | It is called the core and it is a solid ball of iron and nickel |
| The Mantle | it is around the core and it's semi- molten rock meaning that it moves very slowly |
| The crust | is the outer layer of the earth and it is very thin (about 20km) |
| Whats floats on the mantle? | Lots of slabs called tectonic plates which the crust is divided into |
| What are the two types of plates? | Oceanic and continental |
| Continental crust | thicker and less dense |
| Oceanic Crust | thinner and more dense |
| How are the plates moving? | because the rock in the mantle underneath them are moving |
| What are the places called where plates meet? | Plate boundaries or plate margins |
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