Plate movement

who came up with the idea of Pangea

Alfred Wegener

what is pangea

All of the world, the name of the concept that the continents started as one

What is the reason for the continents to be spread apart?

tectonic plates/continental drift theory

what is it called when two plates meet

plate boundries

**What is continental drift?**

The theory where the continents drifted apart to where they are today

**What is sea floor spreading?**

Occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes new crust and a mountain or elevated area of the seafloor

What is a convergent boundry

Two plate boundaries that go toward each other

what is a divergent boundry

Two plates going away from each other

what is a transform boundry

Two plates sliding against each other

how do volcanos form

Magma rises from the hot spots and erupts as lava through cracks in the Earth's surface forming volcanoes. As a plate moves slowly across a hot spot, a chain of volcanoes or volcanic islands can form.

What landforms occur in a divergent boundary

rift valley, mid ocean ridges

What landforms occur in a convergent boundary

Mountains, volcanos, trenches, earthquakes, volcanic island arcs

What landforms occur in a transform boundary

Fault lines, shallow earthquakes

what is a hotspot

A large plume of hot mantle material rising from deep within the earth

what is subduction

When the more dense plate in convergent boundary goes under the light one and creates a trench

Which process would cause SEA FLOOR SPREADING to occur

divergent boundry

Which process would cause crust to be DESTROYED or RECYCLED

convergent boundry

Which process would cause crust to UPLIFT (push up)

Convergent boundry

Which process would cause NEW CRUST TO FORM

Divergent boundaries/ sea floor spreading (Maybe)

Which process would cause ISLAND ARCS to form

convergent boundry