Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
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

Science note cards


fossil the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
original remains the unchanged fossilized remains of animals and plants.
ice core a core removed form an ice sheet
relative age The geologic age of a fossil organism, rock, or geologic feature or event defined relative to other organisms, rocks, or features or events rather than in terms of years.
index fossil a fossil that is useful for dating and correlating the strata in which it is found.
absolute age the true age of a rock or fossil.
half-life the time taken for the radioactivity of a specified isotope to fall to half its original value.
uniformitarianism the theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes.
geological time scale a system of chronological measurement that relates stratigraphy to time,
Created by: peterp16