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.

Rock & Fossil Record

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

Question
Answer
principle that states that geological process shaping the Earth today have been at work throughout Earth's history   uniformitarianism  
🗑
principle that states that all geological change occur suddenly   catastrophism  
🗑
paleontology   the science involved with the study of past life  
🗑
relative dating   determining whether an object or event is older or younger than other objects or events  
🗑
geologic column   an ideal sequence of rock layers that contain all the known fossils and rock formations on earth, arranged from oldest to youngest  
🗑
absolute dating   the process of establishing the age of an object by determining the number of years it has existed  
🗑
isotope   atoms of the same element that have the same number of protons but have different numbers of neutrons  
🗑
radioactive decay   isotopes tend to break down into stable isotopes of the same or other elements  
🗑
half-life   the time needed for half of a sample of a radioactive substance to undergo radioactive decay  
🗑
fossil   remains or physical evidence of an organism preserved by geologic process  
🗑
petrifaction   process in which minerals replace on organisms tissue  
🗑
trace fossil   fossilized mark that is formed in soft sediment by the movement of an animal  
🗑
mold   a mark or cavity made in a sedimentary surface by a shell or other body  
🗑
cast   a type of fossil that forms when sediments fill in the cavity left by a decomposed organism  
🗑
index fossil   a fossil that is found in the rock layers of only one geological age and that is used to establish the age of the rock layers  
🗑
geologic time scale   standard method used to divide the Earth's long natural history into manageable ports  
🗑
eon   largest division of geologic time  
🗑
era   unit of geologic time that includes two or more periods  
🗑
periods   unit of geologic time into which eras are divided  
🗑
extinction   the death of every member of a species  
🗑


   

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: halerz
Popular Science sets