Boundaries
History
Density
Motion
Layers
100
How does a convergent boundary move? (draw it or write it)
together
100
What is the name given to the super continent when all the continents were once together?
Pangaea
100
What is the most dense layer of the earth?
the core!
100
What is formed when continental crust and continental crust converge?
a mountain
100
What type of rock makes up oceanic crust?
basalt
200
How do plates at a transform boundary move?
past one another
200
Who came up with the idea of continental drift? (that all the continents were once together)
Alfred Wegener
200
What is the formula for density?
m/v
200
What causes the plates to move?
convection currents in the asthenosphere
200
What layer in the earth is liquid?
Outer Core
300
What is one thing divergent boundaries can make?
a mid ocean ridge or a rift valley
300
What did Marie Tharp find while looking at the information from the research boat?
mid ocean ridge
300
What is the density of an object that has a mass of 100g and volume of 20cm³ ?
5g/cm³
300
What layer of the earth contains convection currents?
the Mantle, specifically the Asthenosphere
300
Which layer contains primarily silicon and oxygen?
the crust
400
The Juan de Fuca plate is converging with the North American Plate near Washington and Oregon. What is being created here?
subduction zone
400
In the 1970s, Harry Hess continued the research that had begun about the Earth's Layers and mid ocean ridge. What did he call the creation of new crust at an oceanic/oceanic divergent boundary?
sea floor spreading
400
Find the density of a piece of metal that has a mass of 60g and a volume of 6cm³.
If the mass stays the same in the metal but the volume increases, will the density increase or decrease?
the density will decrease
400
What is formed when continental and oceanic crust converge?
subduction zone
400
What layer are the tectonic plates part of?
the crust and top of the mantle (specifically the Lithosphere)