Layers of the Earth
This is the layer where we live and where tectonic plates are found.
Crust
Convection in the mantle causes this to move.
Tectonic Plates
This idea explains how continents moved apart over time.
Continental Drift
This boundary happens when plates move TOWARDS each other.
Convergent
This causes tectonic plates to move
Convection in the mantle
This Earth layer is made of magma and has convection currents.
Mantle
When magma is heated, it does this during convection.
Rises
Continents sit on broken pieces of the crust called these.
Tectonic Plates
This boundary happens when plates spread APART.
Divergent
Tectonic plates moving together cause this feature.
Mountains
This is the hottest and most dense layer of the Earth.
(Inner) Core
As magma cools, it does this during convection.
Sinks
This is the name of the supercontinent that existed long ago.
Pangea
This boundary happens when plates slide AGAINST each other.
Transform
Tectonic plates sliding past each other cause these features
Earthquakes and faults
This layer has plasticity, meaning it acts as both a solid and a liquid.
Mantle
What heat source powers the convection currents in the mantle?
Core
What causes continental drift?
Convection
Mountains form at this type of boundary.
Convergent
Tectonic plates spreading apart cause these features.
Volcanoes
This is the ONLY liquid layer of the Earth
Outer Core
Explain how convection in the mantle leads to plate movement.
As the magma cycles through the mantle, it pushes against tectonic plates, causing them to move
Name two pieces of evidence for continental drift
Fossils matching on different continents, mountain ranges, plates still moving today, continents fitting together
WHY do volcanoes form at divergent boundaries?
Plates spread apart, revealing magma underneath that can then spill out
Explain the exact process that creates mountains (what boundary, why they are physically forming)
Convergent, land is being pushed together and upwards