Layers
What is the outer core?
The outer core is the liquid part of the core
How many volcanos are active today?
1,900 volcanos
What is the place where an earthquake hits the surface?
The fault
Who invented the theory of plate tectonics?
Alfred Wegenear
Is it true that compression happens at divergent boundaries?
No, compression happens at convergent boundairies
a) The inner core is the most solid, densest place in the whole core
b) The core is made of iron and nickle
What is a significant factor of a shield volcano?
The lava when it comes out dries smoothly
What is the epicenter?
The place directly on the fault line but above the focus
What is the theory of plate tectonics?
The theory of plate tectonics is that the continents are on plates that move around slowly.
What kind of fault happens at convergent boundaries?
Reverse Faults
What is the middle layer of the earth (not compositional)
Meosphere
What is a caldera volcano?
A caldera volcano is a volcano that is small and steep. It is made of ask and looks like a cinder
When earthquakes happen in the ocean what can they cause?
Tsunamis
What led to the idea of continental drift?
When scientists began mapping out the seafloor they thought it would be smooth and flat but instead, it was rocky and had mountains.
What kind of fault happens at transform boundaries?
Strike-slip
What are the three compositional layers?
The crust, Mantel, Core
What is a magma plume?
A magma is a hot chamber of magma under a hot spot
What is it called where the earthquake hits first?
The focus
What was it called when all of the continents and countries were connected?
Pangea
What kind of boundaries is it if there is shear stress happening around it?
Transform boundarie
What are the five non-compositional layers?
1. lithosphere
2.athesenoshpere
3.meoshpere
4.outer core
5.inner core
What is a volcano?
Any place where ash and gas come out of earth's surface
What is an earthquake?
Where does seafloor spreading happen?
Seafloor spreading happens at mid-ocean ridges
What kind of stress can be seen at divergent boundaries?
tension