Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.
Don't know
Know
remaining cards
Save
0:01
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:
Retries:
restart all cards
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

8th- Igneous Rocks

TermDefinition
igneous rocks rocks that form from the cooling of magma or lava
extrusive rocks igneous rocks that form from lava cooling above the earth's surface
intrusive rocks igneous rocks that form from magma cooling below earth's surface
porphyritic rocks igneous rocks that form from slowly cooled magma at first, then quickly as it rises toward the surface
felsic rocks that contain a lot of silicate minerals, so they are light-colored (except obsidian)
mafic rocks that contain a lower content of silicate minerals and more iron and magnesium, so they are dark-colored
fine-grained texture of an igneous rock where the crystals are so small, you need a magnifying glass to see them
coarse-grained texture of an igneous rock where the crystals are large enough to see with the naked eye and are all the same size
porphyritic texture texture of an igneous rock that has coarse, or large, grains on a fine-grained background
glassy texture texture of an igneous rock that is smooth and absolutely no crystals form
porous texture texture of an igneous rock that has holes formed from volcanic gases passing through during formation
Created by: holtzmanscience