1 / 19

Rocks

Rocks. The Life of a Rock. Layers of sediment join together. Changes are made from pressure and heat. Melted rock cools and hardens. Rocks become smaller , and smaller , and smaller , and smaller . . . By erosion By wind By earthquake By floods By rain By slides By man.

janae
Download Presentation

Rocks

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

  1. Rocks

  2. The Life of a Rock Layers of sediment join together. Changes are made from pressure and heat. Melted rock cools and hardens

  3. Rocks become smaller, and smaller, and smaller, and smaller. . . • By erosion • By wind • By earthquake • By floods • By rain • By slides • By man

  4. Terms to Know • Weathering: the breaking up of rocks and soil • Erosion: the moving of weathered rock and soil. Weathering allows erosion to take place.

  5. Products of Weathering • Clay • Sand • Rock Fragments (pebbles and stones)

  6. Rocks change………….. • By earthquakes • By volcanoes • By heat and pressure

  7. Sedimentary Rock is . . . • Rock formed when layers of small particles of shell, rock, and sand join together.

  8. Sedimentary RocksHow They are Made • Wind and water break down the earth • Bits of earth settle in lakes and rivers • Layers are formed and build up • Pressure and time turn the layers to rock

  9. Sandstone Limestone Gypsum Conglomerate Shale Types of Sedimentary Rocks

  10. Fossils • Fossils are usually found in sedimentary rock and are the remains or imprints of plants and animals that died long ago.

  11. Fossils-Life From the Past • Fossils provide information about life and conditions of the past. • Scientific evidence shows that the Earth is approximately 4.5 billion years old

  12. Metamorphic Rock is . . . • Rock that is formed when pressure and heat create changes to sedimentary or igneous rock.

  13. Metamorphic RocksWhat are They? • Rocks that have changed • They were once igneous or sedimentary • Pressure and heat changed the rocks

  14. Schist Gneiss Types of Metamorphic Rocks

  15. Igneous Rock is . . . • Rock that is formed when melted rock cools and hardens.

  16. Igneous RocksWhat are They? • Fire Rocks • Formed underground by trapped, cooled magma • Formed above ground when volcanoes erupt and magma cools

  17. Scoria Granite Pumice Obsidian Types of Igneous Rocks

  18. Review of the Rock Cycle • How are sedimentary rocks formed? • What is a fossil? • How are metamorphic rocks formed? • How are igneous rocks formed? • Give an example of each type of rock. • What is weathering? • Explain what erosion is.

  19. Credits • These slides were a compilation of work by: • Jefferson County Schools Power Points on Rocks • http://jc-schools.net/PPTs-science.html • Ellen Benegar (Suffolk Public Schools)

More Related