Easy stuff
Not too hard
Hard
IMPOSSIBLE
100
What is the difference between plate tectonics and continental drift?
Continental drift was an early theory with unproven, unaccepted evidence. Plate tectonics was an improved, well supported theory.
100
Explain the process of subduction.
Subduction is when two plates collide, then the more dense of the two plates sinks below the other.
100
Explain seafloor spreading.
Seafloor spreading is controlled by convection currents, and causes the crust to separate from each other into separate parts. This creates new crust at the ridge.
100
WHAT IS SCIENCE?????
SCIENCE!!!!>:DDDD
200
What was the name of the supercontinent?
Pangea
200
What are the 3 types of plate boundaries? What feature does each create?
Convergent - usually mountains
Divergent - usually volcanoes
Transform - usually earthquakes
200
Where are convection currents located and what do they do?
These currents are located in the mantle. They constantly move the tectonic plates as the warm and cold currents rotate in a circular motion.
300
What was unique about the continent shapes?
Most of the shapes seemed to allow the continents to fit together nicely, like a puzzle.
300
Explain what a mid-ocean ridge is.
Solidified molten material (lava) from the mantle that forms an underwater mountain range.
300
What 3 pieces of evidence did Alfred Wegener use to support his theory of continental drift?
He used rocks, fossils, and climate data.
400
Which of the 3 types of convergent boundaries does not involve subduction?
Continent to continent - usually creates mountains
400
Where is the magma, crust, and mid-ocean ridge located in the diagram below?
Mid-ocean ridge - top
Crust - middle
Magma - bottom
500
What were the 2 main reasons Alfred Wegener’s continental drift hypothesis was rejected?
What force caused the movement of the continents - Couldn't prove how fast they were moving