Week 1 Flashcards
(10 cards)
Where does sea floor spreading theory occurs?
Divergent plate boundaries
A theory in which tectonic plates slowly moves past each other, heat from the mantle’s convection currents makes the crust more plastic and less dense. What theory is it?
Sea floor spreading theory
Pangaea was split into two. What are them?
Laurasia (north)
Gondwanaland (south)
A theory in which theorized that the Earth was composed of one big continent called Pangaea. What is it?
Continental drift theory
What is the one big continent mentioned in the continental drift theory?
Pangaea
A theory that states that the Earth’s crust is composed of several broken plates that move either away, past or towards each other. What is it?
Plate tectonic theory
Who is the Australian creator of Plate Tectonic Theory that observed that the continents are like jigsaw puzzle?
Alfred Wegener
Earth’s magma moves in a what movement that causes the plates to move?
Cyclic movement
Made of several broken plates that are moving. What is it?
Earth’s crust
The ________ is composed of three parts. What are those?
Lithosphere
Crust
Mantle
Core
