How are fold mountains and ocean trenches formed?

Section	Detail
Key Ideas	Fold mountains occur at collision (a type of destructive margin) boundaries. Ocean trenches and fold mountains occur at destructive margins (where subduction is occurring).
Terms	Fold mountains, ocean trenches, landforms
Starter	Quiz
Main	1.   TDIT. 2.   Show presentation and then clip of collision margin and destructive margin. 3.   Students draw fold mountains onto a world map and label which are destructive and collision margins using NT p12 A, plus label Andes, Alps, Himalayas, Rockies, Mariana and Atacama trenches. 4.   Show collision clip again and students draw cross-section (profile) with labels (including key terms). Repeat for destructive margin possibly using simplified version of previous lessons diagram. 5.   Students draw NT p13 B.
Plenary	a.   What are fold mountains? b.   What are ocean trenches? c.   Name 2 fold mountain ranges and 2 ocean trenches.

Unique Landforms Locate At Plate Margins Bv

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What are the different types of plate boundary?

Section	Detail
Key Ideas	The 3 main types of plate boundary, destructive, contructive and conservative are all different. 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?

Convection Currents

World Map of Plate Margins

Plate jigsaw