9 Earth Science Definitions

"Movement on the ground caused by sharp movement of tectonic plates."

"A device which detects and records earthquake waves."

"The outermost layer of the Earth."

"The widest type of volcano that erupts slowly and gently."

"A place where tectonic plates are colliding with each other."

"A volcano that no longer erupts."

"A 'sleeping' volcano."

"The exact point under the ground where the earthquake occurs."

"The Supercontinent to which all land mass on Earth was joined approximately 600mil years ago."

"A layer of 'plastic' semi-solid rock in the lower mantle."

"A conical volcano consisting of layers of solid lava flows mixed with layers of other rock."

"A place where tectonic plates are separating from each other."

"Molten rock that flows on the Earth's surface."

"A layer of rock that contains the crust and upper mantle."

"A volcano built mostly from fluid lava vents. Looks like a shield from above."

"The process by which crust sinks down into the Earth."

"The thickest layer of the Earth."

"A break in the Earth's crust where molten rock and other substances escape."

"A type of volcano that may erupt in the future but has not erupted recently"

"Fastest travelling seismic wave."

"The point on the ground directly above the earthquake's focus."

"Isolated spots away from plate boundaries where hot magma is created."

"An indicator of the amount of seismic energy released by an earthquake."

"This type of wave can be produced by underwater earthquakes."

"The man who proposed the theory of continental drift."

"A steep volcano with no horizontal layers. Volcanic debris accumulates downwind from the vents."

"This type of volcano can erupt with great violence."

"A wave produced by movement of rock during an earthquake."

"A place where tectonic plates are sliding across each other."

"The crust that makes up and supports the ocean floor."

"The crust that forms and supports the continents."

"This type of wave can be produced by ocean currents."

"A huge ocean wave caused by a seafloor earthquake."

"Molten rock that does not reach the Earth's surface."

"Slower moving seismic wave."

"The modern theory that explains how the continents move."

"The most common type of volcano."

"A type of volcano that erupts on a regular basis"