Formation of tectonic movements Term 1!

Question 1

How is young fold mountains created

Answer 1

-continental/ continental or oceanic/continental
-when 2 plates push together (convergent)
-the movement of the plates forces sedimentary rock upwards into a series of folds
-accumulation of layers of sediment
-they are 10-25m years old
-Himalayas

Question 2

How is Rift Valley formed

African Rift Valley

Answer 2

2 plates move apart and the mantle rises causing lines of weakness in the crust. As it rises and the plates move apart the land inbetween falls down. Ocean is then formed in this valley

Question 3

How are ocean ridges formed

Answer 3

-divergent plate boundaries
-As tectonic plates move apart new earths crust is created and Milton rock is pushed up
-a mountain formation is created underneath the ocean
-volcanos are created

Question 4

How are Deep sea trenches formed

Answer 4

When subduction occurs due to convergent plates. One plate sinks causing a ocean trench

Question 5

How are Island arcs formed

Answer 5

When convergent plate boundaries occur and subduction occurs. Volcanoes are made as mantle rises. As tectonic plates are always moving move volcanoes are being made

Question 6

How are old food mountains formed

Answer 6

-continental/ continental or oceanic/continental
-when 2 plates push together (convergent)
-the movement of the plates forces sedimentary rock upwards into a series of folds
-accumulation of layers of sediment
-they have a gentle slope down
-300m years old
-Ural mountains in Russia