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Plate Tectonics

Teacher: Julianna
Across
The location where two tectonic plates meet
A method or device for detecting and locating objects using sound waves
A network of satellites used to determine locations on Earth and to measure plate movements
Earth's outermost layer
A sensing device that detects the magnetic field in rocks
A cool, dense mass of rock that sinks down into the mantle
Where new seafloor forms
Underwater mountain ranges that wrap around Earth
The term used to refer to the magnetic field today
The scientist that proposed the seafloor spreading hypothesis
Down
The theory that Earth's outer shell is divided into several plates that glide over the mantle
The term that scientists would use if one day south becomes north
A theory that the continents drift slowly across Earth's surface
Provides matter and energy for plate motion
A huge landmass that was made up of all the Earth's continents
A process that occurs at mid-ocean ridges, where new oceanic crust is formed
Fluid molten rock that exists under the Earth's crust
A plant that has fossils scattered through South America, Africa, India, Australia, and Antarctica
This occurs when one plate gets forced into the mantle
A process where a plate rises to the top of a ridge and gravity helps push it down the ridge's slope