Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

Username is available taken
show password

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.
Your email address is only used to allow you to reset your password. See 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.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
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



Core the dense center of the earth made of solid and molten iron and nickel
Mantle the layer of the earth that surrounds the core; made of both molten magma and solid rock
Crust the thin, solid, rocky outermost layer of the earth
Differentiation the process of Earth materials separating and sorting by density resulting in a layered structure with the densest material (FE & NI) settling in the core
Tectonic Plate a large section of the earth’s crust that moves and carries everything on it
Hotspot a stationary, high temperature area of melting within the earth mantle that can last for several millions of years where superheated mantle magma rises towards the surface.
Rift valley A long, narrow rip or opening, made by the stretching pulling or splitting apart of the earth’s crust through which mantle magma reaches the surface adding new crust to the edge of a tectonic plates
Seafloor spreading the theory that oceans widen (open up) and continents are pushed apart as new crust is formed at mid ocean ridges
Plate tectonic the theory that the earth’s surface is made of large sections of crust that move and interactive with each other
Continental drift the theory that the major landmasses of the earth were once part of one large single super continent that broke apart 200 million years ago
Mid Ocean Ridge a long underwater mountain range that is split by a rift valley where mantle magma rises and forms new oceanic crust
Convection current the circular flow of magma within the molten part of the mantle as it heads up and cools down
Seismic wave a type of vibrating or shaking activity produced by the movement of earth's tectonic plates
Paleomagnetism a record of the earth’s magnetic field preserved by the alignment minerals in the rock of the earth’s crust time that the rocks were formed at the mid ocean ridge
Focus the point inside the earth where rock first moves starting an earthquake
Epicenter the point on the earth’s surface directly over the focus of an earthquake
Richter scale the scale used to measure the magnitude or strength of an earthquake
Deformation the process of physically changing the earth’s crust as a result of tectonic forces
Viscosity the ability of a substance to resist flowing
Fault a break or fracture in the earth’s crust caused by tectonic forces
Seismologist a scientist that studies the behaviors and characteristics of earthquake
Lag time the amount of time that passes between the arrival of the first P wave and the first S wave
Magnitude a measure of the amount of energy released during an earthquake
Continental Margin the edges of the continents below sea level that represent the shallowest parts of the oceans
Plate boundary an area on the earth’s surface where the edges of tectonic plates are interacting
Subduction the geologic process by which one tectonic plate is forced downward into the mantle under another tectonic plate
Ring of Fire an area of high subduction activity and frequent volcanic eruptions surrounding the pacific plate
Geothermal Energy a renewable energy source that originates from the earth’s own internal heat
Tectonic Forces forces generated from within the earth that result in uplift movement or deformation of the earth’s crust
Volcanic arc an arcing chain volcanic islands or volcanic mountains formed by a subduction of an oceanic plate into the mantle under another tectonic plate
Created by: robertocp2
Popular Earth Science sets




Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards