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Review for Tectonics and Volcano Test
Review for Tectonics and Volcano Test
25
Science
9th Grade
03/26/2015

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Cards

Term
Describe a divergent plate boundary
Definition
This is when two tectonic plates move apart from each other.
Term
Describe a convergent plate boundary
Definition
This is when two tectonic plates move toward each other.
Term
Describe a transform plate boundary
Definition
This is when two tectonic plates slide past each other.
Term
What are the three main different types of plate boundaries?
Definition
Divergent, convergent, and transform plate boundaries
Term
What is the difference between oceanic and continental crust?
Definition
Oceanic crust is thinner and denser than continental crust.
Term
What is Pangaea?
Definition
This is a supercontinent that existed over 300 million years ago in which all the current continents were fit together in one large land mass.
Term
What type of waves do scientists use to study the center of the earth?
Definition
Seismic waves
Term
What is the lithosphere?
Definition
This is what the tectonic plates are made of - it is the crust and the top-most part of the mantle.
Term
What causes Earth's tectonic plates to move?
Definition
Very slow moving convection currents in the mantle push the plates.
Term
List some of the examples of evidence for the Theory of Continental Drift.
Definition
Any of these would work.
1.Similar mountain formations on different continents
2. Similar rock deposits and formations on different continents
3. The close fit of continental coastlines
4. The matching glacial groves on different continents
Term
What theory explains the existence of earthquakes and volcanoes?
Definition
Plate tectonics
Term
Where do earthquakes occur?
Definition
Along the fault / edges between two tectonic plates at a transform plate boundary
Term
What is the name of the tube that connects a volcano's magma chamber to the Earth's surface?
Definition
Pipe - also called a conduit
Term
What is the name of the opening where magma leaves a volcano?
Definition
Vent
Term
Describe composite volcanoes
Definition
These are tall, cone-shaped mountains which have layers alternating with lava and ash.
Term
Describe shield volcanoes
Definition
These have gently sloping sides made of layers of thin, runny lava.
Term
Describe cinder-cone volcanoes
Definition
These generally have sharply sloping sides made mainly of violently erupted pyroclastic material.
Term
What is the main difference between magma and lava?
Definition
Magma and lava are both melted, molten rock material but magma is below the surface of the Earth and lave is above the surface of the Earth.
Term
What is a magma chamber?
Definition
The area below the volcano that contains molten rock material.
Term
What is a volcano conduit?
Definition
This is another name for a volcano's pipe - it is the tube that connects a volcano's magma chamber to the Earth's surface
Term
Where is the Ring of Fire?
Definition
This is a long series of volcanoes located around the borders of the Pacific Ocean and its surrounding continents.
Term
What caused the Volcanoes that make up the Ring of Fire to form?
Definition
The convergent boundaries of two tectonic plates moving toward each other in which the oceanic plate is subducted under the continental plate.
Term
When two plates move apart at a divergent boundary, a volcano can form in a feature called a...
Definition
Rift Valley
Term
When you properly state a scientific problem it must be...
Definition
in the form of a testable question.
Term
When you properly state a scientific hypothesis it must be phrased as a prediction so that it says...
Definition
If (insert independent variable), then (insert dependent variable).
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