Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Plate Tectonics

Vocab

TermDefinition
Convergent Boundary An actively deforming region where two (or More) tectonic plates or fragments of the lithosphere move toward one another and collide.
Divergent Boundary A linear feature that exists between two tectonic plates that are moving away from each other.
Transform Boundary fault whose relative motion is predominantly horizontal in either sinistral or dextral direction. (slide sideways past each other)
Density the degree of compactness of a substance.
Trench a long, narrow ditch
Island Arc a curved chain of volcanic islands located at a tectonic plate margin, typically with a deep ocean trench on the convex side
Volcano a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth
Earthquake a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action
Seismic waves an elastic wave in the earth produced by an earthquake or other means
Subduction Zone sites of high rates of volcanism, earthquakes, and mountain building
Radioactive Isotope any of several species of the same chemical element with different masses
Pangea hypothetical supercontinent that included all current land masses, believed to have been in existence befoe the continents broke apart during the Triassic and Jurassic Periods
Continental Drift the gradual movement of the continents across the earth's surface through geological time.
Radiation the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization
Conduction the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.
Convection the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
Convection Current a current in a fluid that results from convection
Asthenosphere the upper layer of the earth's mantle, below the lithosphere, in which there is relatively; low resistance to plastic flow and convection is thought to occur.
Lithosphere the rigid outer part of the earth, consisting of the crust and upper mantle
Mid-ocean ridge a long, seismically active submarine ridge system situated in the middle of an ocean basin and marking the site of the upwelling of magma associated with seafloor spreading.
SONAR a system for the detection of objects under water and for measuring the water's depth by emitting sound pulses and detecting or measuring their return after being reflected
Sea-Floor Spreading the formation of new areas of oceanic crust, which occurs through the uwelling of magma at midocean ridges and its subsequent outward movement on either side.
Created by: PLHSScience9