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Plate Tectonics Crossword Puzzle

Across
Change speed and direction as they travel through different materials
Occurs when a material deforms, or changes shape, as a stress is applied and remains in the new shape when the stress is released
Layer of Earth that is liquid
When a thick and buoyant continental plate meets a thin and dense oceanic plate, what results?
Proposed a hypothesis that suggested that Earth's continents once were part of a large super continent
Measures the amount of energy released during an earthquake
When two plates collide with each other, what type of plate boundary forms?
A crack in Earth's crust along which movement has taken place
When plates slide horizontally past each other, what plate boundary forms?
One example of a divergent plate boundary
Down
Occurs when a material deforms as a stress is applied, but returns to its original shape when the stress is removed
When two plates move apart from each other, what plate boundary forms?
Large super continent
A boundary that marks a density change between layers
The "dead zone"
Discovered the mid-ocean ridge system and proposed a hypothesis of seafloor spreading
The sudden movement or vibration of the ground that occurs when rocks slip and slide along faults
Layer of Earth that is solid and dense
What is a deformation in response to a stress?
The force per unit area that acts on a material