when the plates collide (or convergent plate boundaries)
DESCRIPTION
When the plates collide (or convergent plate boundaries). LO: to be able to explain what happens when plate boundaries meet. Key words we have learnt so far. Convergent Divergent Conservative Oceanic Constructive Crust Mantle Ocean ridge Plate Core Convection currents. - PowerPoint PPT PresentationTRANSCRIPT
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When the plates collide (or convergent plate boundaries)
LO: to be able to explain what happens when plate boundaries
meet
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Key words we have learnt so far• Convergent• Divergent• Conservative• Oceanic• Constructive• Crust • Mantle• Ocean ridge• Plate• Core• Convection currents
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Diagram for memory
• Get into pairs• Label yourself 1 and 2
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How did you do?
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Destructive plate margin (where a continental plate meets an oceanic plate)
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Labels:Neatly add these correct labels:
Generally explosive volcanic eruptions.
Magma rising to form volcanoes.
Plate being forced into the mantle
Deep, violent Earthquakes
One plate is denser than the other so sinks.
Plate melting.
Subduction zone
Oceanic plate
Continental plate
Ocean trench
Make sure you can explain how earthquakes and volcanoes occur at this plate boundary
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The AndesThe Andes are found at a destructive margin along the western coast of South America. The liquid magma rises towards the surface to form volcanoes such as Aconcagua. The collision of the plates also causes uplift and the growth of the Andes. The Andes (shown
in white)
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Practice exam paper (June 2010)
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Mark scheme
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How did this person do?
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Collision marginContinental and continental
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The Collision Zone• When continental plates collide head on with
other continental plates, the result is upheaval!
• Similar densities – neither plate is subducted• Gradual forward movement of each plate
creates extreme pressures= earthquakes• Over time, the rock strata become folded, and
rise to create mountain ranges
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The Alps and the Himalayas
The Alps
The Himalayas
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Oceanic/ oceanic boundary
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convergent
Use page 102 in textbook to help!
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