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.

Terms to do with the History of Life

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Term
Definition
Extinct   A species that has died out  
🗑
Paleontologists   Researchers who study fossils to learn about ancient life such as the structure of ancient organisms, their environment, and the way they lived  
🗑
Relative Dating   Determines the relative age of a rock layer or fossil by comparing its placement with that of fossils in other rock layers.  
🗑
Index Fossils   Used when scientists need to correlate the relative ages of the rock layers that carry them distant places  
🗑
Radiometric Dating   Relies on radioactive elements which decay or breakdown into nonradioactive elements at a steady rate  
🗑
Half-life   The time required for half of the radioactive atoms in a sample to decay  
🗑
Geologic Time Scale   A timeline of Earth that geologists and paleontologists have built  
🗑
Eras   What eons are divided into  
🗑
Periods   What eras are divided into (ranging in length from hundreds of millions of years to just 2 million years)  
🗑
Plate Tectonics   Huge plates that move in the past and continue to move on in the Earth's outermost layer  
🗑


   

Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
 
To hide a column, click on the column name.
 
To hide the entire table, click on the "Hide All" button.
 
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
 
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.

 
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
Created by: nelska09
Popular Biology sets