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Thursday 27 March 2014

monstrous mountains

Mountain sports cover a wide range of many loved sports like:
  • Skiing
  • Hiking
  • Camping
  • Snowboarding
  • Mountain biking
  • Rockclimbing
  • Trekking

I’m sure there are many more but these are the best known and favorites in the world. There are many competitions for these sports and some are featured in the Olympics. I myself love hiking, camping and skiing there great fun and good because your exercising. But what has happened to create mountains and hills that we use to do these sports? I shall tell you.

tectonic plate's map Pic from worldatlas.com
Plate boundaries:
Pic from pulse.pharmacy.arizona
Anyway so mountains are formed at both plate boundaries, at constructive plate boundaries convection currents (there currents in the magma under the earth’s crust) push the two plates apart so magma flows out of the gap, cools and forms new land, when the gap opens up again more magma flows out. This happens again and again so the plate builds up layers and layers creating mountains, examples are the mid-Atlantic ridge rift and east African rise.
At destructive plate boundaries one tectonic plate is heavier than another so it sinks below it and melts into the mantle, but as the plate sinks it’s pushing against the other plate crushing it together and forcing it to fold upwards creating mountain ranges. Mountains formed this way are called Fold Mountains examples are the Rockies’ and the Alps.
 Pic from volcanoes.usgs.gov   


So that’s how some mountains are formed, very interesting so maybe you’ll think of this next time you’re doing mountain sports.

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