Types Of Plate Boundaries Flashcards
Collision boundary
Occur when 2 plates of similar densities move together. This causes the material between them to buckle and rise up forming a mountain. Volcanoes are very common at this type of boundary but no volcanoes are formed.
Conservative boundary
They don’t crash together they slide side by side. When they slide they cause friction which then leads to an earthquake.
Constructive boundary
The 2 plates move apart from each other. As they move apart magma fills up the gap creating a volcano
Destructive boundary
Found when an oceanic plate and a continental plate meet. The oceanic plate slides under the continental plate which then makes the oceanic plate melt due to friction. The magma rises and forms a volcano
What are the 2 types of plates
Oceanic and continental plate.
What’s the continental plate
It forms land and is mostly made of granite, low density , usually 30-50km thick
What’s the oceanic plate
Under the ocean , mostly igneous rock ( basalt) which is denser , much thinner 6-8km thick