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Week 9: 10/21-10/25 PowerPoint Presentation
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Week 9: 10/21-10/25 - PowerPoint PPT Presentation

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Week 9: 10/21-10/25

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  1. Week 9: 10/21-10/25 Earth Science GT Mrs. Brady 2013

  2. 10/21/13 Obj: SW explain the role of gravity and natural agents (water, wind, glaciers) on Earth (landform changes) and how they impact the rock cycle. Warm Up 1. Test Analysis (just be patient for instructions) Agenda: Test Analysis PPT Chapter 14 HW: Pd1,2,3: Read 14-1 and answer #1-7 Pd 5: Read 14-1 and answer #1-4, get test signed

  3. 10/22/13 Obj: SW explain the role of gravity and natural agents (water, wind, glaciers) on Earth (landform changes) and how they impact the rock cycle. Warm Up • Pull out hw – let’s go over it AGENDA: 1 – HOMEWORK CHECK 2 - Weathering Lab Stations HW: Read 14-2 and answer # 1-2

  4. Weathering and Erosionpull out your HW

  5. HW 14-1 #1-7 • wind, water, and temperature change • Water that seeps into cracks freezes and expands, which widens and deepens crack with each freeze/thaw cycle. • Plant roots grow and expand, physically wedging rocks apart. Animal dig and burrow, which exposes new rock to weathering. • Mechanical weathering is a physical process, breaking large rocks into smaller rocks of the same chemical composition. Chemical weathering involves chemical reactions.

  6. In oxidation, iron bearing minerals combine with oxygen to form red colored iron oxide. In hydrolysis, water and other substances in rock react chemically to form two or more new substances. In carbonation, carbonic acid converts minerals into carbonates. • Oxidation, hydrolysis, and carbonation are all chemical processes that weather rocks. • Acid precipitation forms when nitrogen oxides and sulfur dioxide released during fossil fuel combustion combine with water in the atmosphere to produce nitric, nitrous or sulfuric acid. When these acids fall back to earth they called acid precipitation.

  7. 10/23/13 Obj: SW explain the role of gravity and natural agents (water, wind, glaciers) on Earth (landform changes) and how they impact the rock cycle. Warm Up • Explain oxidation. Is it mechanical or chemical weathering? • Limestone is dissolved by chemical weathering at a rate of 0.2 cm every 100 years. At this rate, after how many years would a layer of limestone 1500 cm thick completely dissolve? AGENDA: 1 – HOMEWORK CHECK 2 - Weathering Lab Stations HW: Pd 1,2,5: Finish the Lab Conclusions Period 3- Complete the worksheet

  8. 10/24/13 Obj:SW explain the principles of hydrology, including the water cycle, and surface and groundwater flows, porosity, water retention, permeability, particle surface area, and sources of water contamination and pollution. Warm Up • Complete the worksheet on Weathering. Agenda 1- 16-1 PPT Notes 2 – Go over Lab: Porosity/Perm/Water Retention 3 – Go over how to write a lab report HW: Read 16-1

  9. 10/25/13 Obj:SW demonstrate and investigate surface and groundwater flows, porosity, water retention, and permeability. Warm Up Pull out your lab and take a data sheet. Agenda: 1 – LAB: Porosity/Permeability/Water Retention HW: FORMAL LAB REPORT DUE NEXT WEDNESDAY Test 5 on Thursday

  10. Friday Ticket Out • What is the major difference between the three rock types? • Look at the 3 rock samples shown – which one is an igneous, sedimentary, and metamorphic rock. How do you know?