Transcript Rock Layers
01/20/11 Rock Correlations #3 Entry Task Finish rock correlation Today’s Plan: -Rock Correlation -Vocab -Acid Test Learning Target: - I can create a model showing the rock layers in the Grand Canyon. 01/20/11 Rock Correlations #3 • Rock Layers: flat deposits of rock (like layers in a cake) that extend over a large area • Correlate: to find a relationship or connection between two or more things Today’s Plan: -Rock Correlation -Vocab -Acid Test Learning Target: - I can create a model showing the rock layers in the Grand Canyon. 01/20/11 Today’s Plan: -Rock Correlation -Vocab -Acid Test Rock Correlations #3 Learning Target: - I can create a model showing the rock layers in the Grand Canyon. 01/20/11 Rock Correlations #3 What characteristics do you notice about these sedimentary rock types? Limestone . Today’s Plan: -Rock Correlation -Vocab -Acid Test Sandstone . Shale . Learning Target: - I can create a model showing the rock layers in the Grand Canyon. 01/20/11 • Rock Correlations #3 Limestone: sedimentary rocks containing calcite. – Calcite is found in marine shells. • Sandstone: sedimentary rocks made out of particles of sand, cemented together. • Shale: smooth sedimentary rock made of fine clay particles. Shale has splintery layers and often contains plant fossils. Today’s Plan: -Rock Correlation -Vocab -Acid Test Learning Target: - I can create a model showing the rock layers in the Grand Canyon. 01/20/11 Rock Correlations #3 Lab Safety -Follow directions -Proper and careful use of materials for intended purpose -Safety equipment eyewash demonstration -Keep materials away from your face We are working with dilute hydrochloric acid, HCl HCl is dangerous if in contact with eyes or ingested -Wear goggles -Gently use a small amount -Never point bottle at anyone -Clean up carefully -WASH HANDS, then remove goggles Today’s Plan: -Rock Correlation -Vocab -Acid Test Learning Target: - I can create a model showing the rock layers in the Grand Canyon. 01/20/11 Rock Correlations #3 -Demonstration of acid test Rocks on paper towel (numbers down) Gently wipe off an area on the rock Gently put one drop of acid on a rock Observe and record your observations (rock observation table). Dry the rocks and table. Wash hands, return goggles Working with acid -Wear goggles -Gently use a small amount -Never point bottle at anyone -Clean up carefully -WASH HANDS, then remove goggles Today’s Plan: -Rock Correlation -Vocab -Acid Test Learning Target: - I can create a model showing the rock layers in the Grand Canyon. 01/20/11 Rock Correlations #3 TASK: -Perform acid test and record observations -Clean up & wash hands -Remove goggles and place in box Lab Safety -Follow directions -Proper and careful use of materials -Safety equipment -Keep materials away from your face Today’s Plan: -Rock Correlation -Vocab -Acid Test Working with acid -Wear goggles -Gently use a small amount -Never point bottle at anyone -Clean up carefully -WASH HANDS, then remove goggles Learning Target: - I can create a model showing the rock layers in the Grand Canyon. 01/20/11 Rock Correlations #3 Calcite • The material in the rock that reacted with the acid was calcite. • Calcite is composed of Calcium Carbon and Oxygen.(CaCO3) • When acid reacts with calcite, carbon dioxide (CO2) gas is given off, hence fizzing. • Calcium carbonate makes up 15% of the earth's sediments. • It is present in limestone, marble, marl, travertine and tufa and is the main ingredient in the shells of invertebrates. Today’s Plan: -Rock Correlation -Vocab -Acid Test Learning Target: - I can create a model showing the rock layers in the Grand Canyon. 01/20/11 Rock Correlations #3 These are pieces of Kaibab limestone that contain fossils of sea creatures! Can you see the fossils! Carefully observe the pictures and your sample of Kaibab limestone. The Kaibab Limestone in the Grand Canyon is 8000 feet above sea level. ~How can you explain fossils of sea creatures at that elevation? ~What evidence do you have to support your claim?