1 / 8
Télécharger la présentation

Formation of Igneous Rocks: Intrusive vs. Extrusive

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

Playing audio...

  1. Chapter 5 - Igneous Rocks

  2. Formation • Igneous rocks form from cooling magma. • If they cool inside the Earth, they are called __________ igneous rocks and have _______ crystals. • If they cool on the surface, they are called __________ igneous rocks and have _______ crystals. intrusive large extrusive small

  3. Crystal Size • This piece of obsidian cooled so _____ on the surface that it did not have time to form any crystals. fast

  4. Crystal Size • This piece of rhyolite also cooled on the surface very fast and has ______ crystals. small

  5. Crystal Size • This piece of granite cooled _______ inside the Earth and has ______ crystals. slowly large

  6. Classification is based on crystal size and composition.

  7. magma igneous rock lava extrusive intrusive

  8. small extrusive; small grain size gabbro has a large grain size intrusive; its large grain size

More Related