Save
Upgrade to remove ads
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
edit
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

ScienceQuiz

Science study guide for the fossil and geologic time quiz (ch. 13 & 14)

QuestionAnswer
The time needed for a half-parent isotope to decay is called half-life
Gives the age of rocks in years absolute age
Older rocks lie under the younger rocks is called the Law of superposition
Thin film of carbon preserved as a fossil is called a carbon film
The process by which minerals fill spaces inside a bone to produce a fossil mineral replacement
The cavities left in rocks when a shell is dissolved is called a mold
A copy of a fossil produced by filming a mold with sediment or crystals is called a cast
An insect trapped in amber would be an example of this: original remains
Which parts of organisms are most likely to fossilize? Hard parts such as shells, bones,and teeth.
How can fossils be used to understand the changes to Earth overtime Each fossil is fossilized in a rock layer and each rock layer has an age therefore you can determine the age of the fossil by finding out the age of the rock.
What is the difference betweena Geologic Era and Period? Periods are units of geologic time. A geologic Era is the division of time.
Precambiran Time: not many organisms were fossilized and not much is known about this time.
Paleozoic Era: many organisms were marine life and Trilobites were common life-forms.
Mesozoic Era: In the beginning of this time period the continents were all combined forming a land mass called Pangaea. In this Era reptiles were common life-forms.
Cenozoic Era: During this time period many ice ages occured and it was much cooler than other ages before it.
Created by: finchelfan2999
Popular Earth Science 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