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L3 Earth

Tectonic Plates

TermDefinition
Hypothesis A prediction or statement based on limited evidence that can be tested by observation and experimentation
Continental drift The hypothesis that the continents slowly drifted to their current positions after having been part of a single giant landmass that broke apart
Fault A break in Earth’s crust where the rocks on either side have moved
Seafloor spreading The process by which the rocks on either side of the mid-ocean ridge slowly pull away from each other, allowing molten rock to rise, solidify, and form new seafloor
Scientific theory A well established group of ideas or models that is supported by a large amount of evidence and that can be used to explain many different phenomena
Plate tectonics The scientific theory that the crust is made of rigid pieces, called tectonic plates, that move across Earth’s surface
Subduction The process by which a collision between two tectonic plates forces the denser plate under the less dense plate
Convergent boundary The movement of two plates towards each other
Divergent boundary The movement of two plates away from each other
Transform boundary When two plates slide past each other, sideways motion
Pangaea When the continents were all connected it was called.
Finding similar fossils, rock formations and mountains helped to prove the scientific idea of Continental drift
Mantle convection, Seafloor spreading, Subduction at trenches all cause movement of tectonic plates
What is the scientific word for the Earth's crust Lithosphere
Crust is made at the ___________ and destroyed at the ________________. made at the ridges and destroyed at the trenches
Most volcanoes and earthquakes happen... in zones along the edges of continents
Created by: Science6IMS
Popular Earth Science sets

 

 



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