Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.

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

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.

Remove ads
Don't know
remaining cards
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

Vocab #9

8th grade vocab

Physical properties characteristics like hardness, luster, color, texture, density, and the way it splits.
Chemical properties characteristics like the ability to burn and the reactivity to acids.
Minerals Natural, sold materials found on Earth that are the building blocks of rock; each has a certain chemical makeup and set of properties that determines their use and value.
Ores minerals that are mined because they contain useful metals or nonmetals.
Fossil fuels natural fuels that come from the remains of living things; fuels give off energy when they are burned.
Rocks materials from earth that can be classified by their physical appearance. Each of 2 classifications is formed differently and can change, over time, from one type to another.
Trial Each set of repeated data in an experiment
Sample a portion of the total number of objects. It is used in estimation.
Mold fossil fossil that forms when sediments bury an organism and the sediments change into rock. The organism decays, leaving a cavity (hollow spot) in the shape of the organism.
Cast fossil fossil that forms when a mold is filled with sand or mud that hardens into the shape of the organism.
Created by: asarvis