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Fold mountains exercise

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Use the following words to complete the passage below - Himalaya, destructive, syncline, sediments, folds, compression, layers of rock, convection, anticline.
Fold mountains are large mountain ranges where the layers of rock within them have been crumpled as they have been forced together. They can be formed at
or collisional plate boundaries, where tectonic plates are moving together forcing to be crumpled upwards. The layers of rock can form 2 basic features, if the folding is up over the feature if known as an , or down over into a . If the folded rocks in an anticline go over the top of themselves we get a feature known as an overfold.

The process of formation is as follows;
1)
accumulate in shallow seas or depressions known as GEOSYNCLINES as rivers enter those areas.
2) This creates a sea or lake bed of layered sedimentary rocks as
takes place.
3) Two plates move together because of
currents in the mantle
4) This starts to crumple the rocks together.
5) The rocks start to form
which have anticlines and synclines, which are pushed upwards to form fold mountains.
6) These mountains are then subject to erosion, weathering and mass movement (denudation)

Recent mountain building movements have created the Andes, Himalaya, Alps and Rockies mountains. The
were created from shallow sea bed sediments under the Tethys sea, which have been pushed up and folded as a result of the Indo-Australian plate moving into the Eurasian plate.