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Exploring Earth Science: Fossils, Plate Tectonics, and Natural Disasters

This document provides a comprehensive overview of key geological concepts, focusing on fossils, plate tectonics, ocean currents, and natural disasters like tsunamis and earthquakes. Students will delve into topics such as the significance of the Mid-Atlantic Ridge, the differences between continental and oceanic crusts, and the impact of convection cells on Earth's tectonic plates. Additionally, it explores the relationships between climate phenomena like El Niño and hurricane activity, as well as the Mohs hardness scale for minerals.

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Exploring Earth Science: Fossils, Plate Tectonics, and Natural Disasters

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  1. Science tip #1 5/21/12 • What’s the name of the reptile whose fossil remains are found on both the African and the S. American continent? • The Appalachian Mtns extend from the U.S to what other continent? • Mapping the Mid-Atlantic Ridge contributed to the discovery that the ___ ___ is spreading. • What is made in the middle of a rift like the Mid-Atlantic Ridge?

  2. After the science tip….. • Correct ALL the wrong questions/answers on your Erosive Forces test, staple the corrections to the scantron, and turn in. • LEAVE your test copy on your desk. I’ll pick it up at the end of class. • Also--#13 D. 5 • Fill in objective notes 14.1-14.7 (book pages are listed on your notes for you.) What you don’t finish is homework. • Fyi, I’ll put your ppt notes online tonite…IF you’d like to use them. • Be sure to check the pass-back bin. • Have a fabulous Monday!

  3. #2 (please COPY BFP questions on your purple sheet) 5/22/12 • What’s the difference between continental crust and oceanic crust? • What’s another name for “crust”? • The convection cells that help to move the plates are located in the ______. BFP #1: What decreases the salinity in oceans? What increases it? (think about runoff, melting glaciers, evaporation, precipitation…) BFP #2: Which direction do ocean currents spin in the N. Hem due to the Coriolis effect?

  4. #3 (please COPY BFP questions on your purple sheet) 5/23/12 • What are the 2 results of stress on Earth’s crust? • Using the diagram, name A and B. • Which type of seismic wave is a compressional wave? BFP #3: During an El Nino event do the number of hurricanes typically increase or decrease? BFP #4: If a mineral scratches glass, its hardness on Mohs scale is… a. 1-2 b. 2-3 c. 4-5 d. 5.5-10 A B

  5. Warmer winters Weaker hurricane season flooding droughts fisheries

  6. Mohs hardness scale • fingernail (hardness = 2.5) • copper penny (hardness = 3) • glass plate or steel knife (hardness = 5.5) • steel file (hardness = 6.5) • 1- Talc • 2- Gypsum • 3- Calcite • 4- Fluorite • 5- Apatite • 6- Feldspar • 7- Quartz • 8- Topaz • 9- Corundum • 10- Diamond

  7. #4 5/24/12(please COPY BFP questions on your purple sheet) • How is a tsunami generated? • What does the magnitude number of an earthquake mean? • Describe 2 warning signs of tsunamis. If you haven’t been doing so already, please write ONE BFP per box AND begin TODAY with boxes 6 and 7. Thanks!  BFP #6: Which of these is NOT a fossil fuel? (eco geo unit) a. Natural gas b. coal c. uranium d. coal BFP #7: In the flotation method of refining ore, the rock is separated from the product by: (eco geo unit) a. differences in melting point b. replacing one chemical for another c. differences in density d. passing an electrical current through it

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