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Plate Tectonics

Name
Class Block
Across
Type of boundary where plates pull apart and away from each other
An instrument used to measure strength of an earthquake
Type of boundary where plates come together
Type of volcano that has gentle, sloping sides
Theory where new crust is formed under the ocean
Molten rock under Earth
Large wave created by underwater earthquake
Nickname for the area of volcanic activity in Pacific
Down
Scientist who saw underwater mountains and came up with sea floor spreading
Another name for an underwater mountain chain
Shaking of Earth due to plates sliding past one another
Top layer of the Earth
An inactive volcano
Happens when a plate slides under another plate and melts
Type of boundary where plates slide past one another
A type of volcano with steep sides made of layers of rock and lava