What's Inside?
Which layer of the earth has convection currents moving through magma?
The mantle
What did Wegener name the super continent in his Continental Drift Hypothesis?
Pangea
What effect occurs during ALL plate boundaries motions?
a) volcanoes
b) trenches
c) earthquakes
c) earthquakes
The _______ is a layer of molten rock under the crust.
a) outer core
b) crust
c) mantle
c) mantle
Which continental crust is younger, continental or oceanic?
oceanic
The ______ consists of all of the crust as well as the upper, rigid part of the mantle.
a) Boundaries
b) Lithosphere
c) Pangea
b) Lithosphere
What is the name of the German scientist who proposed a hypothesis in the 1900's that the continents fit together like a puzzle?
a) A Wegener
b) H Hess
c) J Wesley
a) A Wegener
Which boundary occurs where two plates collide with each other?
a) divergent
b) convergent
c) transform
b) convergent
As the Earth rotates in space, the outer core circulates around the inner core. This creates Earth's _____.
a) Coriolis effect
b) Magnetic field
c) Earth's Orbit
b) Magnetic Field
Why are volcanoes usually created on the continental crust at subduction zones?
a) Crust is recycled back into the mantle where carbon being melted creates pressure from a build up of carbon dioxide that explodes at the nearest vent.
b) Creation of new crust and the destruction of old crust creates ripples in the magma and makes too many waves in the lithosphere.
a) Crust is recycled back into the mantle where carbon being melted creates pressure from a build up of carbon dioxide that explodes at the nearest vent.
What layer is solid metal, made of iron and nickel?
inner core
The hypothesis that proposed that the continents were once together but drifted apart is called what?
Continental Drift
Boundaries are where two plates meet. Which boundary occurs where two plates slide past each other?
Transform
Earth's lithosphere is broken into pieces called ____.
a) tectonic plates
b) subduction areas
c) boundaries
a) tectonic plates
What % of the earth is covered in a relatively thin layer of water?
75%
There are two types of crust, oceanic and continental. Which is thinner and yet more dense?
Oceanic crust
What TWO processes did Harry Hess discover in 1960 to explain how the continents drifted apart?
Sea Floor Spreading
&
Subduction Zones
Which boundary occurs where two plates divide away from each other?
Divergent
The inner core is surrounded by a molten layer of iron and nickel called the _______?
outer core
Why did Wegener´s Continental Drift Hypothesis not become accepted as an approved scientific theory?
He could not prove HOW the continents drifted apart.