2. What can you tell me about rocks? What have you observed about rocks? (shape, texture, color) Do you have a favorite type of rock?
3. RocksSedimentary Formation: formed at surface of the earth; mainly fused sediments that have collected together Examples: mud, sand, gravel, sandstone Flickr, subarcticmike, Mike Beauregard http://www.flickr.com/photos/31856336@N03/4718776101/
4. Where can you find sedimentary rocks? Any guesses? Mountains Rock formations
5. Igneous Formation: formed from melted rocks that have cooled and solidified Examples: magma, granite, basalt Flickr, Adventures of Pam and Frank http://www.flickr.com/photos/adventurespf/3228207246/
6. Where can you find igneous rocks? Any guesses? Lava! The earth’s crust
7. Metamorphic Formation: deformed and recrystallized magma from the earth’s crust Examples: slate, quartzite Flickr, Shandchem, http://www.flickr.com/photos/14508691@N08/4053465765/
8. Where can you find metamorphic rocks? Any guesses? Magma The earth’s crust
9. The Rock Cycle http://www.cotf.edu/ete/modules/msese/earthsysflr/rock.html
10. What is weathering? According to Wikipedia, “Weathering is the breaking down of rocks, soils and minerals as well as artificial materials through contact with the Earth's atmosphere, biota and waters.” -Wikipedia, the free encyclopedia [Weathering] http://en.wikipedia.org/wiki/Weathering
11. What is erosion? According to Wikipedia, “Erosion is the process by which material is removed from a region of the Earth’s surface. It can occur by weathering and transport of solids in the natural environment, and leads to the deposition of these materials elsewhere. It usually occurs due to transport by wind, water, or ice.” -Wikipedia, the free encyclopedia [Erosion] http://en.wikipedia.org/wiki/Erosion
12. What is compaction? According to Wikipedia, “Compaction (geology) refers to the process by which a sediment progressively loses its porosity due to the effects of loading. As more sediment is deposited above the layer, the effect of the increased loading is to increase the particle-to-particle stresses resulting in porosity reduction primarily through a more efficient packing of the particles.” -Wikipedia, the free encyclopedia [Compaction] http://en.wikipedia.org/wiki/Compaction_(geology)
13. What is cementation? According to Wikipedia, “Cementation involves ions carried in groundwater chemically precipitating to form new crystalline material within sediment pores; this is how "sediment" becomes "rock". The new pore-filling minerals form "bridges" between original sediment grains, thereby binding them together. So sand becomes "sandstone", and gravel becomes "conglomerate”.” -Wikipedia, the free encyclopedia [Cementation] http://en.wikipedia.org/wiki/Cementation_(geology)
14. Homework Pick one fact/something interesting you learned about today and write about it in your science journals. Just one paragraph. Be prepared to hand this assignment in tomorrow!
