Show:
Earth's Layers
Plate Tectonics
Volcanoes
Earthquakes
More Tectonics
100
This layer of the Earth is the densest.
What is The inner core
100
What do secondary waves move through?
What is Solids
100
Does high or low density magma rise to the surface?
What is low
100
Where are deep focus earthquakes located?
What is subduction zones
100
What causes the motion of material in the asthenosphere?
What is convection currents
200
This layer consists of solid nickel and iron
What is -The inner core
200
Does the crust get older or younger when you move away from mid-ocean ridges?
What is older
200
What provides proof of plate tectonics? (Plates moving, Pangea...)
What is Volcanoes and Earthquakes
200
How are earthquakes categorized?
What is the amount of energy/magnitude released
200
Where is new land found?
What is mid-ocean ridge
300
When will the outer core harden?
What is when radioactive decay ends
300
What type of boundary forms a mountain?
What is a convergent boundary (plates colliding)
300
What three things help scientists to determine if a volcano will erupt?
What is seismic activity, gas build up, movement of land.
300
What causes people to die from earthquakes?
What is buildings falling
300
What landform do you find along trenches?
What is volcanic island chains
400
What layer is said to be solid, though we have called it "silly putty" like?
What is the upper mantle
400
What are underwater trenches formed by?
What is subduction zones
400
What is the thickness/type of lava determined by?
What is the amount of silica
400
What do seismograph stations do?
What is help us to measure where earthquake was located and when it will happen
500
The crust that is the most dense
What is oceanic crust
500
What is the major cause of earthquakes?
What is stress and pressure building up between the plates
500
This type of eruption has a high amount of silica and gas
What is a violent eruption