Tectonic landscaped
- Created by: abimoo
- Created on: 13-06-15 11:17
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- Tectonic Landscapes
- Earthquakes
- Narrow bands in the middle of oceans
- Along plate boundaries
- Plates
- Move because of convection currents in the mantle
- Earths crust divides to form tectonic plates
- Moves in direction depending on the type of plate.
- Volcano's
- Narrow bands
- Middle of oceans
- Edges of plate boundaries
- Earthquakes
- Narrow bands in the middle of oceans
- Along plate boundaries
- Convergent
- Very violent volcanos and earthquakes
- Move together and collide
- Subduction orrors when oceanic and continental collide because oceanic is dencer.
- Fold mountains if they push up
- Measuring Earthquakes
- Richter scale
- Measures energy released
- No upper limit
- Seismometer used
- Mercalli scale
- 1-12 in roman numerals
- Measures effect and damage
- Epicentre is above focus
- Focus is the central point where the earthquakes happens
- Richter scale
- Divergent
- Mid-atlantic ridge
- Plates move apart
- New sea floor created as magma rises
- Less violent earthquakes and volcanos occur.
- Conservative
- Slide past each other
- No volcanos
- Very violent earthquakes due to an increase in pressure
- Bam earthquake 2003
- 50,000 injured
- 30,000 people died
- 100,000 homeless
- Blind slip fault
- Hot spots
- Volcanos only form in the middle of plates when hotspots happen.
- Forms chains of volcanos when plates move
- Occor under sea where crust is week and lava can escape
- Hawaii and Lanzarote
- Earthquakes
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