Vocabulary
Earth's Layers
Major Geologic Events
Plate Tectonics
Continental Drift
100
The theory that Earth’s continents have moved over time
What is continental drift?
100
The outermost layer of Earth.
What is the crust?
100
Which of the following is not a type of volcano? a. Composite b. Shield c. Lahar d. Cinder cone
C - Lahar
100
The name given to the continents when they were joined together.
What is Pangea?
100
The geologic era that we are currently in
What is the Cenozoic era?
200
The area on Earth’s surface above the center of an earthquake
What is the epicenter?
200
The center of Earth; it is made up of iron and nickel.
What is the core?
200
The part of a volcanic eruption can change the weather
What is ash?
200
The boundaries at which subduction occurs.
What are convergent boundaries?
200
The part of the United States that is located in the Ring of Fire
What is the Pacific Coast?
300
A boundary where two continental plates meet and converge or collide
What is a convergent boundary?
300
The middle layer of Earth
What is the mantle?
300
The scale scientists use to measure the intensity of earthquakes
What is the Richter Scale?
300
The theory that the ocean is getting bigger
What is sea-floor spreading?
300
The theory that the continents are moving
What is continental drift?
400
Boundary where two continental plates move away from one another
What is a divergent boundary?
400
The layer that consists of the upper mantle and the crust
What is the lithosphere?
400
A volcano that scientists do not believe will erupt again.
What is an extinct volcano?
400
The theory that explains why earthquakes occur along faults
What is the theory of plate tectonics?
400
The parts of the Earth's crust where volcanoes erupt?
What are hot spots?
500
An organized set of observations, ideas, and experimental evidence designed to predict or explain an event.
What is a theory?
500
Earth’s outer core is liquid, but its inner core is solid because it is ________.
Under extreme pressure
500
The measurement scientists use to measure the shake of an earthquake.
What are S-waves?
500
Islands in America that were formed from volcanic mountains
What are the Hawaiian Islands?
500
The percentage of the earth's volcanoes that are located in the Ring of Fire
What is 80%?
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