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
share
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

Chapter 17

Vocabulary

TermDefinition
continental drift Wegener's hypothesis that Earth's continents were joined as a single lanswass, called Pangaea, that broke apart about 200 mya and slowly moved to their present
Pangaea ancient land mass made up of all the continents that began to break apart apart about 200 mya.
magnetometer device used to map the ocean floor that detects small changes in magnetic ields.
magnetic reversal When Earth's magnetic field changes polarit between normal and revesed.
paleomagnetism study of Earth's magnetic record usin data gathred from ironbearign minerals in rocks that have recored the orientation of Earth's mamgetic field at the time of their formation.
isochron Imaginary line on a map that shows pooints of the same age; formed at the same time.
seafloor spreading the hyothesis that new ocean crust is formed a t mid-ocean ridges and detroyed at deep-sea trencehes, occurs in a cotinious cycle of magma intusion and spreading
tectonic plate huge pieces of earth's cust taht cover its surface and fit togeterat their edges.
divergent boundary place where two of Earth's tectonic plates are moving apart; is associated with colcansim, earthquakes, and high heat flow, and is found primarly on the seafloor.
rift valley long, narrow depression that forms when continental crust begins to separate at a divergent boundary.
convergent boundary place whre two tectonic plates are moving toward each other; is associated with trenches, island arces, and folded mountains.
subduction process by which one tectonic plate slids beneath another tectonic plate.
transform boundary place where two tectoic plates slide horizntally as t ech antother; is characterized by long faults and shallow earthquakes
Ridge Push Tectonic process associated with convection currents in Earth;s mantel taht occurs when the weight of an elevate ridge pushes an oceanic plate toward a subduction zone
Slab pull tectonic process associated with convection currents in Earths mantel that occurs as the weight of the subductioning plate pulls the trailing lithosphere into asubduction zone
Created by: louizatamez