Vocabulary
Mystery
Continental Drift/Plate Tectonics
Plate Boundaries
Volcanoes/Earthquakes
100
The slow movement of Earth’s plates that carries continents toward or away from each other
What is continental drift
100
The shapes of what 2 continents indicate that at one time they were joined.
What is South America and Africa
100
_______ boundaries occur when plates slide past each other.
What is Transform
100
When the earth's plates collide, these may form.
What are mountains/volcanoes
100
A chain of stratovolcanoes circling the Pacific Ocean is called the _________.
What is the Ring of Fire
200
The outer layer of earth
What is Earth's crust
200
The theory of Continental Drift proposes that the continents were once one supercontinent called ______.
What is Pangaea
200
The active boundary between a plate a called what?
What is a fault
200
_________ is molten rock inside a volcano. ________ is molten rock on Earth's surface.
What is Magma and lava
300
the process by which liquid rock flows up and outward through a narrow valley to form ridges of new crust on the ocean floor
What is seafloor spreading
300
A ______ marks the exact boundary between a plate.
What is a rift
300
The theory of ____________ states that the Earth’s surface is located on blocks of rocks called plates.
What is plate tectonics
300
Where Earth's plates move, they may slide alongside one another, pull apart, or ______.
What is collide
300
A _____________ measures and records earthquakes.
What is a seismograph
400
When _______ move away from each other, a valley forms.
What is plates
400
The crust of the Earth is ______ under the ocean and _________ under the land.
What is thinner under the ocean and thicker under the land.
400
The 3 types of convergent boundaries are:
What are ocean-ocean, ocean-continental, and continental-continental boundaries
400
________ occur where tectonic plates are moving apart from one another
What are divergent boundaries
400
A kind of scale used to measure the amount of seismic energy released by an earthquake is what?
What is a richter scale
500
The slow upward heaving of Earth's surface (mountains can form because of this)
What is uplifting
500
The transfer of what kind of energy inside Earth moves plates?
What is heat energy
500
The Mid-Atlantic Ridge is formed by what type of boundary?
What is Divergent Boundary
500
The _______________ fault in California is a boundary where plates slide past each other.
What is the San Andreas Fault
500
__________ waves are detected first because they move so fast and _________ waves are the slowest and most damaging.
What is primary waves and surface waves
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