Image from Pearson 2012
Pearson text - See Chapter 10.1
page 316
Click on the picture below to start your exploration with Earth's Structure:
Introduction to Plate Tectonics
Most of the animations have toggle buttons on the lower margin, plus start and pause buttons
Introduction to Tectonic Concepts - overview of earth quakes, volcanoes, plates, ocean ridges etc.
Most of the animations have toggle buttons on the lower margin, plus start and pause buttons
Introduction to Tectonic Concepts - overview of earth quakes, volcanoes, plates, ocean ridges etc.
- Toggle on Relief and leave it on for the entire task.
- Volcanoes (on/off)
- Earthquakes (on/off)
- Both on
- Both off - Age of sea-floor on/off
- Plate names (on/off)
- The others as required.
- play once fully
- backwards and forwards
- This has many animations all of which are relevant to this course
- Investigate all interactive buttons/labels/definitions
- Investigate all interactive buttons/labels/definitions
- Play and label buttons
- Make a short comparison of the 2 different ways of describing the layers of the earth.
- Toggle the magnetic pole direction and speeds
- Investigate the four mapping techniques - look for the numbered buttons to advance the animations. This general technique was developed during WW2 hunting for German U-boats (submarines).
Declarative Knowledge
Asthenosphere: a layer of 'plastic' semi-solid rock in the lower mantle
Continental Drift: the separating of continents by drifting across the oceans - the break-up of Pangaea into Laurasia and Gondwana
Magnetic striping: patterns of magnetism trapped in rocks on each side of plate boundaries
Ocean trench: a deep trench or downward fold in the ocean floor that is much deeper than the surround sea bed - the Mariana Trench near Japan
Plate tectonics: the theory that the Earth's crust is cracked into many large pieces that move on the asthenosphere - like the skin on custard
Rifting: the process of continents breaking up, subsiding and then allowing in the ocean - eg the Great Rift Valley of East Africa
Seafloor spreading: the process of new crust forming at the mid-ocean ridges and spreading outwards - eg the mid-Atlantic Ridge between the Americas and Europe/Africa
Subduction: where the crust is sinking down into the earth - usually an oceanic plate sliding beneath a continental plate eg the Pacific plate sliding under Asia
Asthenosphere: a layer of 'plastic' semi-solid rock in the lower mantle
Continental Drift: the separating of continents by drifting across the oceans - the break-up of Pangaea into Laurasia and Gondwana
Magnetic striping: patterns of magnetism trapped in rocks on each side of plate boundaries
Ocean trench: a deep trench or downward fold in the ocean floor that is much deeper than the surround sea bed - the Mariana Trench near Japan
Plate tectonics: the theory that the Earth's crust is cracked into many large pieces that move on the asthenosphere - like the skin on custard
Rifting: the process of continents breaking up, subsiding and then allowing in the ocean - eg the Great Rift Valley of East Africa
Seafloor spreading: the process of new crust forming at the mid-ocean ridges and spreading outwards - eg the mid-Atlantic Ridge between the Americas and Europe/Africa
Subduction: where the crust is sinking down into the earth - usually an oceanic plate sliding beneath a continental plate eg the Pacific plate sliding under Asia