Earth's Layers
Which layer of Earth is composed of tectonic plates?
Crust
Name the boundary when two plates move away from each other.
Divergent boundary
What landform is found at a divergent boundary of two oceanic plates?
Mid-ocean ridge
Name the supercontinent that existed approximately 200 million years ago.
Pangea
How does the age of rock change the farther you travel from a mid ocean ridge?
the age increases
Hot, solid center of Earth
Inner Core
Name the boundary when two plates move toward each other.
Convergent boundary
Name one landform that occurs at a convergent plate boundary involving at least one oceanic plate.
Volcano
Name the theory that explains HOW and WHY the continents move
Theory of Plate Tectonics
Which area of the ocean basin do a majority of organism live?
continental shelf
Liquid part of the core
Outer core
What is the name of the process at a convergent boundary when one plate slips beneath another?
Subduction
Name one landform that occurs at a convergent plate boundary involving at least one oceanic plate.
Trench
Name the theory Alfred Wegener proposed.
Theory of Continental Drift
Earthquakes are a result of….
Energy released due to pressure build up at a tectonic plate boundary
Layer of Earth where convection currents occur.
Mantle
At a convergent boundary of an oceanic and continental plate, which plate will subduct?
Oceanic plate
Name a specific mid ocean ridge we studied.
Mid-Atlantic ridge
What did Alfred Wegener NOT know when he proposed his theory?
How the continents moved
What creates a chain of volcanoes on the interior of a tectonic plate(not at a boundary)?
Hot spot
Hot semi-solid rock is located here
Mantle
Which type of Earth’s Crust is the most dense?
What occurs at cracks in the crust along underwater oceanic plate boundaries? Are there living organisms in this location?
Hydrothermal vents
Yes
Name three of the four pieces of evidence Wegener discovered to support is theory.
Continents fit like puzzle pieces
same fossil and plants found on opposite sides of ocean
same age and composition of mountain ranges in North America also found in Europe
evidence found in wrong climate regions (glacial striations and coal)
What is a tsunami and what causes them to occur?
A large wave resulting from an underwater volcanic eruption or earthquake