MOUNTAIN-BUILDING <ul><li>LEARNING OBJECTIVES: </li></ul><ul><li>Most students should be able to: </li></ul><ul><li>Understand that the Earth’s crust consists of slow moving plates; </li></ul><ul><li>Appreciate the relationship between converging plates and mountains; </li></ul><ul><li>Know that mountain ranges at plate boundaries are formed by mountain folding. </li></ul>Enquiry Question: Where are mountain environments found?
Mountain Range Number Mountain Range Number Mountain Range Number Alps Asir Mts Pyrenees Caucasus Balkan Mts Zagros Mts Himalayas Rocky Mts Appalachian Mts Atlas Mts Andes Great Dividing Range Drakensberg Ethiopian Dividing Range
Most of the world’s mountains are found in belts, or mountain ranges, like the Andes. These belts can be traced along plate boundaries. Over milions of years, movement of the plates has led to many episodes of mountain building, pushing the rock up The world’s highest mountain ranges – like the Andes and the Himalayas – were formed quite recently in geological time. (That means tens of millions of years ago, rather than hundreds of millions!)
Explain how the land masses of the Earth have changed position over the past 225 million years.
Plate names African Indo-Australian Plate North American South American Eurasian Pacific Nazca Antarctic Pacific
Work in groups using the plasticine and post it notes (for labels) to show the 4 stages of how fold mountains are formed...
Show the sequence of events which led to the formation of fold mountains
THE DOMINO EFFECT: HOW PLATE TECTONICS BUILDS MOUNTAINS
The crust is broken up into tectonic plates Heat from inside the earth (convection currents) moves the plates. … land is squashed together – mountain building takes place. The Earth is made up of layers The thinnest layer we live on is called the crust When land plates (called continental crust) collide (crash into each other)… THE DOMINO EFFECT: HOW PLATE TECTONICS BUILDS MOUNTAINS