Save
Busy. Please wait.
Log in with Clever
or

show password
Forgot Password?

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

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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
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

StudyFossil geologic

study

QuestionAnswer
what fossils are A fossil is the naturally preserved remains or traces of animals or plants that lived in the geologic past.
How fossil form Fossils of hard mineral parts (like bones and teeth) were formed as follows: Some animals were quickly buried after their death (by sinking in mud, being buried in a sand storm, etc.). Over time, more and more sediment covered the remains.
The various types of fossils (cast, mold, etc) mold fossils -(a fossilized impression made in the substrate - a negative image of the organism) cast fossils -(formed when a mold is filled in)
what an index fossil is and what it is used for Index fossils (also known as guide fossils, indicator fossils or zone fossils) are fossils used to define and identify geologic periods (or faunal stages).
the 4 main divisions of geologic time Eons, Eras, Periods and Epochs
period A division of geologic time representing one subdivision of an era; usually named for the locality in which the formations representing them were first or best described, or for some distinguishing characteristic of the formations.
Epochs A division of geologic time representing one subdivision of an eon and including multiple periods
eon represent the rich history of the precambrian, a division of the geologic time scale longer than the era; The largest division of ecologic time, including multiple eras
the 3 main Eras of the phanerozoic eon Paleozoic Mesozoic Cenozoic
how these eras are defined era denotes a clearly defined period of time of arbitrary but well-defined length, such as for example the Mesozoic Era
what eon, era,period, and epoch we are currently living in the Holocene (sometimes called Recent) epoch, Quaternary period, Cenozoic era, and Phanerozoic eon.
what the dominant life-forms were in each of these eras The Cenozoic Era
Fossil he remains (or an impression) of a plant or animal that existed in a past geological age and that has been excavated from the soil
index fossil a fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found
Created by: powell14243
Popular Standardized Tests sets

 

 



Voices

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:
Retries:
restart all cards