Tectonic plates
The word tectonic means relating to what
Mantle and crust
Continental drift is the gradual movement of what over a period of time?
Continents
This geographic activity occurs at all three boundaries
Earthquakes
What is the formula for density
D=M/V
The word convergent means what?
To come/join together
What is the lithosphere comprised of
The mantle and the crust
This super continent is made up many different pieces called
Plates
When one tectonic plate slides under the other, what is created
Subduction zone
What are the 4 layers of the earth
crust
mantle
inner
outer core
The word divergent means what?
To spread apart
Where is the asthenosphere located
Under the lithosphere
This German scientist came up with the theory of continental drift
Alfred Wegner
Transform boundaries exhibit a shearing kind of stress, what is an example of shearing?
Some rubbing or grazing against something else
This is what moves plates across the earth
convection currents
A divergent boundary exhibit what kind of stress?
Tension/Tensile
All the rocks on earth are apart of what?
lithosphere
Matching plants, reptile and mammal fossils were found what two main continents?
Africa, South America
Volcanoes and mountains occur at which boundary
Convergent
How many kinds of convergent boundaries are there?
three
Cutting though a tree branch with a chainsaw?
Shearing
What layer is made of liquid rock and which is solid?
Inner core solid
outer core liquid
What is a continent?
A continuous span of land
What two landforms occur at divergent boundaries
Midocean ridges and rift valleys
Name the three kinds of boundaries
Name the three kinds of stress they undergo
Boundaries: Convergent, Divergent, Transform
Stress types: Compression, shearing and tension
Jim and Rome get into a fight and Jim body slams Rome into the wall, what kind of stress is Rome's body experiencing?
Compression