Plate Boundaries
What is a plate boundary?
where two plates meet
What is a convergent boundary?
where two plates come together, causing a collision where one plate is subducted
What is a divergent boundary?
where two plates move apart or diverge
What is a transform-fault boundary?
where plates slide past one another moving in opposite directions
What is an earthquake?
a sudden shaking of earths surface
What are the 3 types of plate boundaries?
Convergent, Divergent, Transform Fault
What is subduction?
when one plate slides under another
What happens in a divergent plate boundary?
rock rises from the mantle then hardens which adds new solid rock to the edges of both plates
What happens to the crust in a Transform Fault Boundary?
crust is neither created or destoryed
Give 1 effect of plate movement
- Earthquakes
- Formation of Volcanoes
- Formation of Mountain Ranges
What is the mantle made up of?
Molten rocks
What happens when two continental plates move apart?
Seafloor spreading
What happens to the crust in the Divergent Plate Boundary?
A new crust is being created
What fault can be located in California, USA?
the san andreas fault
Why do the plates move?
convection currents in the mantle drive plate movement
Among the two types of crust, which is denser?
Oceanic
Seafloor spreading
In a divergent boundary, the force of separation creates a ______ zone.
Tension
A crack made by the TFB is called
Fault
Which layer of the earth is convection current taking place?
Mantle
What is a Pangaea?
a super continent made of all the current continents together over 225 million years ago
Give 1 geological feature that is being created by the Convergent Boundary
- Mountain Ranges
- Volcanic Arc/Island Arc
- Trench
Give 1 geological feature that is being created by the Divergent Boundary
- Seafloor
- Rift valley
Give 1 geological feature that is being created by the Transform Fault Boundary
- Earthquakes
- Fault
How do tectonic plates interact?
they pull apart, slide past each other and collide