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Practice Exam Question
1. Draw a labelled sketch of Figure 1 to show the characteristics of this volcano.
~ Sketch the shape of a volcano. Label key things: crater, the shape of the
volcano (cone) and the steep sides.…read more

Slide 3

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Practice Exam Question
1 (b) (ii) Explain how volcanoes form at constructive plate
margins
Plates pull apart due to convection currents in the mantle. A
gap is created, which is plugged by rising magma. This cools
to form lava. As the plates shift apart again, more magma is
released from the mantle to fill the gap and the layers build up
to form a volcano under the ocean.…read more

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Practice Exam Question
1 (c) (ii) Describe the likely worldwide effects of a supervolcano eruption.
The eruption would smother vast amounts of land and kill many
people: One in three people would be killed within 1000km of an
eruption. Buildings would collapse within this area due to the weight of
the ash, vegetation would be destroyed. Many connections would be
lost. Road transport would be difficult. Airplane use would be
hazardous because of ash. Livestock would die as they would choke
on hot ash. Ash would spread out and start changing the climate.
Temperatures will fall by 10 degrees and this will make it difficult to
grow food in many areas.…read more

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1 (d) (ii) Describe how people use FOLD MOUNTAINS.
Farming is a prime activity as the terraces are helpful to grow
crops. The European Alps are a popular tourist location, which
attracts millions of skiers. The walkers/ skiers show how people
go to enjoy the spectacular scenery. There is a large area of
mining ­ There are many resources of gold, silver and tin in the
Andes. The deep valley and rivers of the Andes give it huge
potential as a region to produce hydroelectric power.
Refer to photo inserts if given...R E F E R…read more

Slide 6

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5)b) Explain the formation of an OX-BOW lake.
The water erodes the land on the outside of the meander. Due to
continuous erosion and deposition along the sides of the meander,
eventually it cuts all the way across the meander and initially forms an
island where the middle of the meander used to be, and the old channel
now becomes a side channel. Over time the side channel silts up, forming
a U shaped lake.…read more

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