Wednesday 17 September 2008

Granite, Clay, Limestone

Revision of rocks and rock cycle

Rocks Introduction
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Earthquakes comparing and contrasting responses in LEDC / MEDC

Earthquake prediction

Earthquake Prediction
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Introduction to Earthquakes

Earthquakes Lesson 1
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Definitions


volcano - a cone shaped hill through which lava, ashes and gases may erupt (Phases: active, dormant, extinct)

vent - central pipe through which magma rises in the volcano

crater - surface rim of the volcano

magma - molten rock below the Earth's surface

lava - molten rock above the Earth's surface 700 -1200 degrees C

secondary cone - a smaller cone found on the side of the main volcanic cone, fed by small pipes branching from the vent or directly from the magma chamber

ash- volcanic rock dust less than 4mm in size

nuee ardente - a cloud of volcanic ash and pyroclasts

magma chamber - a body of molten rock found at the base of the vent

sill - a horizontal igneous intrusion

dyke - a vertical igneous intrusion
Pyroclastic - broken up rocks, volcanic fragments thrown up in an eruption (fire fragments)
Volcaninc bombs - a mass of ejected lava from a volcanic. A rugby ball shaped mass of molten rock larger than 65 mm



People adapting to living in fold mountain areas

landforms associated with plate boundaries

Tuesday 8 July 2008

Structure of the Earth, introduction to plate tectonics Glossary of terms

Continental crust: The part of the Earth's crust that makes the continents. It is between 25 and 100km thick
oceanic crust: The part of the Earth's crust that is under the oceans. It is heavier than the continental crust and is made of basalt. It is between 5km and 10 km thick.
crust: The outer most layer of the Earth
mantle: That part of the Earth's structure between the crust and the core
inner core: Inner most layer of the Earth's structure, composed of nickel and iron. It is a solid layer due to intense pressure.
outer core: This layer of the Earth is liquid and is composed of iron.
subduction zone: This occurs at a destructive plate margin where oceanic crust, moving towards continental crust, is forced downwards into the mantle and destroyed.
destructive plate boundary: where two tectonic plates are moving together and oceanic crust is destroyed by subduction.
convection currents: circulating movements within the mantle generated by heating from the core
ocean trench:

How will I be assessed?

Unit 1: Physical Geography
External exam
June availability from June 2010
37.5% of the total marks1 hour 30 min
Unit 1 consists of Section A and Section B.
Students are required to answer three questions, one from Section A and one from Section B plus free choice of one other

Unit 2: Human Geography
External exam
June availability from June 2011
37.5% of the total marks1 hour 30 min
Unit 2 consists of Section A and Section B.
Students are required to answer three questions, one from Section A and one from Section B plus free choice of one other.

And then, there is a controlled assessment - I'm not going to mention this yet, because details have not been confirmed from the exam board - and anyway we won't be looking at this until year April 2010 ..... which seems ages away!

Introduction to course

Well done for choosing GEOGRAPHY - remember without Geography .... you're nowhere!

Over the next three years we are going to cover a wide range of topics.

Firstly, the syllabus.....
This can be viewed here

Basically these are the topics that we will be covering:

Unit 1: Physical Geography

Section A
The Restless Earth
Rocks, Resources and Scenery
Challenge of Weather and Climate
Living World

Section B
Water on the Land
Ice on the Land
The Coastal Zone

Unit 2: Human Geography

Section A
Population Change
Changing Urban Environments
Changing Rural Environments

Section B
The Development Gap
Globalisation
Tourism