Zusammenfassung der Ressource
The Restless Earth
- Volcanoes
- Created by the eruption of magma onto the earths surface
- Different types
- Classified by their type of eruption
- Shield Volcano
- Gentle slope
- Fluid lava
- Low, wide cone
- Constructive plate boundaries
- Eruptions are frequent
- Eruptions are Gentle
- Composite Volcano
- Destructive plate boundaries
- Alternating layers of lava and ash
- Eruptions
- High silica content
- could be pyroclastic flows
- Steep slopes
- EYJAFJALLAJOKULL
- Super volcanoes
- Erupts at least 1000 km³ of material
- Forms a depression in the ground
- Calderas
- Often has a higher ridge around it
- Eruptions infrequent
- Hundreds of thousands of years apart
- YELLOW STONE
- Earth's Crust
- Tectonic Plates
- Convection currents move them
- In the mantle
- Circular currents of heat
- Continental plates
- Oceanic plates
- Plate Boundaries
- Conservative plate boundary
- Two plates sliding past eachother
- In the same direction. Slightly different angles and speeds
- Build up of energy
released causes
earthquakes
- No volcanoes
- Curst isn't destroyed
or made. No source of
magma.
- Destructive plate boundaries
- Plates collide
- Any plates
- Oceanic and Continental
- Oceanic plate is denser
- It subducts under
continental plate
- magma formed as plate melts
- Oceanic Trenches
- Continental and Continental
- Pressure displaces sediments
- Fold Mountains
- THE ANDES
- Constructive Plate boundaries
- Plates move apart
- Occurs under water
- Magma erupts to the surface
- It cools to create new land
- Divided into Tectonic plates
- 38 minor
- 14 major
- Earth Quakes
- Measuring Earthquakes
- Richter Scale
- 10 fold increase when the scale
increases by 1
- Scale 2 earthquakes is 10 times more
powerful than a scale 1 earthquake.
- Measures the effects of earthquakes
- Uses subjective descriptions
of the reuslting damage
- Scale= I-XII
- Focus
- The point where the earthquake occurs
- Epicentre
- The point at the earth's surface
directly above the focus
- KOBE, JAPAN
- MEDC
- HAITI
- LEDC
- The 3 p's
- Prediction
- Japan monitor earth
tremors
- Protection
- Building to an
appropriate
standard
- Preparation
- Drills, hospitals
practicing for major
disasters
- Tsunami
- THE BOXING DAY TSUNAMI
- Primary Effect
- Crust shifting
- Secondary Effect
- Displacement of water
- 800 KPH
- Approach the coast unnoticed
- Near land the slow
- Reduce in length
- Gain in height