Volcanoes

Volcanoes

Constructive Plate Margin
1. Occurs where plates move away from eachother - as with the North American Plate and the Eurasian plate in the Atlantic Ocean
Destructive Plate Margin
1. Found where plates move towards each other - as in this case with the Nazca plate and the South American Plate
Conservative Plate Margin
1. Occurs when plates slide past each other or move in the same direction but at different speeds. It does not form a volcano as nothing is created nor destroyed but does start an earthquake
Shield Volcano
1. Erupts frequently but they are gentle eruptions (Less explosive)
2. Magma is very fluid and flows quickly
3. It has a steep slope
Fold mountains
1. They are formed on a destructive plate boundary where a river carries sediments such as limestone and sandstone. After years the rocks are compressed into sedimentary rocks where the rocks are forced upwards (KNOWN AS ANTICYNCLINE) in a series of folds because of the movement of the tectonic plate
2 Types of Tectonic Plates
1. Continental Crust - THICKER and LESS DENSE
2. Oceanic Crust - THINNER and MORE DENSE
Differences between Constructive and Destructive
1. New Crust is formed versus destroyed
2. Land forms at different plate margins

Resource summary

	Created by Aaliyah Andu over 9 years ago