What is it called when a plate sinks into Earth's mantle?
subduction
What is the name of the long mountain range on the seafloor formed by eruptions through Earth's crust?
Mid-ocean ridge
Which type of plate boundary can subduction occur?
convergent boundary
How many pieces of key evidence did Wegener have to support his claim?
4
What are the 3 types of plate boundaries?
divergent, convergent and transform
What type of plate boundary occurs when two plates move apart?
divergent boundary
How many main layers does the Earth have?
4
Which type of boundary is occuring?
convergent
What is the idea that the world's land masses are slowly moving over time called?
Continental Drift
Which 2 continents did Wegener notice "fit together like pieces of a puzzle"?
South America and Africa
What kind of scientist was Alfred Wegener?
Meteorologist
What was the biggest reason Wegener's theory of continental drift was not believed?
He couldn't explain HOW the continents moved.
What is the name of the supercontinent that translates to "all lands"?
Pangaea
Which continent has evidence of past glaciers, that supports climate evidence?
Africa
True or False: At the mid-ocean ridge, new rocks form at the ridge pushing old rock away.
True
What type of plate boundary occurs when two plates come together/collide?
convergent boundary
Which type of boundary does this show?
transform
What was the name of the geologist known for the theory of Plate Tectonics?
Harry Hess
What do you call the theory describing how Earth's plates move and what happens when they interact with each other?
Plate tectonics
What can form at a divergent boundary?
rift valleys, trenches
What is the name of the scientist who is responsible for the theory of Continental Drift?
Alfred Wegener
What can form at a convergent boundary?
mountain ranges, volcanoes
Which type of plate boundary causes faults to form?
transform boundary
What type of plate boundary occurs when two plates slip past each other in opposite directions?
transform boundary
What are the currents that move plates underneath the Earth's crust (in the asthenosphere)?
convection currents
What do you call the process that continually adds new material to the ocean floor?
Sea floor spreading