Techtonic Plates
Layers
Magnetic Field
All of the Above
Vocab
100
What causes plates to move?
Convection Currents
100
What are the basic layers of the Earth?
Crust, Mantle, and the Core.
100
What do magnetic fields do?
They block solars winds and radiation from the sun.
100
Which layer is second least dense?
Mantle
200
Give two examples of plate movement?
e.x. divergence, convergence, subduction, transforming.
200
What substances are each layer?
Crust-solid mantle- hard solid and liquid outer core- liquid inner core- solid
200
What would happen if our magnetic field disappeared?
Our atmosphere would be gone and we would die.
200
What causes earthquakes?
Movement under under that crust that causes the crust to vibrate.
200
What do rifts do?
Rifts split plates.
300
What is called when plates collide?
Convergence
300
What is the inner core made of?
Mostly Iron
300
How do we have proof that it exists?
If you point a compass, it will point to the north, south, east or west of the magnetic field.
300
How are the layers separated?
By density
300
What causes volcanos?
Magma rises up from the mantle and bursts through the crust, raising crust along with it.
400
How are mountains made?
Tectonic plates converge and push each other upward.
400
What are the detail layers of the Earth?
Lithosphere, Athenosphere, Lower Mantle, Outer Core, Inner Core.
400
What causes a magnetic field?
The convection currents in the outer core. Also the iron moving in the core.
400
What happens when a plate breaks?
Magma pushed up from the mantle creates new land.
400
What do convection currents do?
They move plates and causes the magnetic field.
500
Where are the lithospheric plates located?
In solid part of the upper mantle and crust.
500
What is a result of movement in the inner layers. Give at least one example.
e.x. volcanoes, earthquakes, etc.
500
How can the magnetic field be destroyed?
If the core dries up and shrinks.
500
How are islands created?
In the ocean, volcanoes erupt and the magma dries up and builds up on each other, and if big enough, creates islands.
500
Whats is a magnetic field?
A forcefield caused by the outer cores convection currents that blocks radiation & solar wind
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