Plate Tectonics
Effects of Plate Movement
Earthquakes
Volcanoes
Plate Boundaries
100
This is the thinnest layer of the Earth's layers.
What is crust?
100
Scientists believed that our current continents were once a single supercontinent called this.
What is Pangea?
100
These are cracks in the Earth's crust along which movement takes place.
What are faults?
100
The melted rock below the Earth's surface.
What is magma?
100
These are the two types of plates.
What are continental and oceanic plates?
200
This is the layer of the Earth that consists of the crust and uppermost mantle. It is divided into a number of tectonic plates.
What is the lithosphere?
200
This is an area of active volcanoes that circles the Pacific plate.
What is the Ring of Fire?
200
The instrument used by scientists to measure the seismic waves of plate movement.
What is a seismograph?
200
The magma that comes out of the Earth.
What is lava?
200
A boundary that consists of two plates moving toward each other.
What is converging boundary?
300
This layer is the only layer that is in a liquid state.
What is outer core?
300
New land is a result of this activity.
What is volcanic activity?
300
The point underground where the faulting occurs.
What is the focus?
300
This type of volcano is formed when rock fragments are deposited around the vent creating a cone shape.
What is a cinder cone?
300
A plate boundary that consists of two plates moving (sliding) past each other in opposite directions.
What is sliding boundary?
400
This layer is the hottest layer of the Earth.
What is inner core?
400
This is often carried hundreds of miles away after an eruption and can provide great nutrients to the soil.
What is volcanic ash?
400
The point on the surface of the crust above the focus.
What is the epicenter?
400
This type of volcano forms when a lot of hot lava flows smoothly from a vent and spreads out to cover a large area.
What is shield volcano?
400
A plate boundary in which two plates move away from each other and molten rock rises up to fill the gap thereby creating new crust.
What is diverging boundary?
500
The Earth's plates move on average this much in one year.
What is about 4 inches per year?
500
This is a violent shaking of the Earth's crust caused by built up energy.
What is an earthquake?
500
These are the two types of waves that occur during earthquakes.
What are surface waves and body waves?
500
This type of volcano is cone-shaped, but with steeper sides.
What is a composite volcano?
500
The process in which one plate moves under another.
What is subduction?
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