Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
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
remaining cards
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:
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


geologic time scale

atmosphere the gaseous portion of the planet
eon largest time unit on the geologic time scale
fossils remains or traces of organisms preserved from the geologic past
geologic time scale the division of earth's history into blocks of time
glaciation covered with or affected by a glacier
igneous rock rock formed by the crystallization of molten magma
pangea proposed supercontinent, which 200 mya began to break apart
paleontologist scientist who studies fossils and the history of life
periods basic unit of the geologic time scale that is a subdivision of an era
phanerozoic eon part of geologic time that is represented by rocks containing abundant (lots of various) fossil evidence
plate tectonics theory which proposes that earth's outer shell consists of individual plates which interact in various ways
precambrian eon all geologic time prior to the Phanerozoic eon
radiometric dating a complex procedure of calculating the absolute age of rocks
relative dating a form of dating by placing rocks in their proper sequence
Created by: kcurtin