Thursday 15 September 2011

What are the different types of plate boundary?

Section
Detail
Key Ideas
  1. The 3 main types of plate boundary, destructive, contructive and conservative are all different.
  2. Examples of the boundaries are important to remember.
Terms
Convection currents, destructive margin, constructive margin, conservative margin, subduction, collision
Starter
Lava image – where is that happening? What makes it liquid?
Convection currents animation
Main
1.   TDIT
2.   World map of tectonic plates
3.   Plates jigsaw
4.   Annotate plate margin cross-sections (below) using NT p10/11 D, E, F
5.   Add examples:
·         Destructive (subduction) = Nazca moving under South American – Andes Mts
·         Destructive (collision) = Indian towards Eurasian – Himalaya Mts
·         Constructive = Eurasian & North American away from each other - Mid Atlantic Ridge/Iceland
·         Conservative = Pacific & North American moving alongside each other – San Andreas Fault, California
Plenary
a.   How quickly do plates move?
b.   Give an example of a conservative plate margin.
c.   What happens at a destructive plate boundary?
d.   How was Iceland formed?




World Map of Plate Margins