Agenda Wed 9/30

1. Agenda Wed 9/30 Reminder Make sure your Classwork /Homework Packets are in Fill in Grade sheet due Friday Today Ch 2 Notes Plate tectonics (keep until Ch. 2 is done) Half sheet only : U/A p.74 1-6 Homework: Due Monday, Early Friday Wed p.64-74 title, vocab, q:1-6 Thu p.76- 85 title, vocab, q:1-7 Fri. p. 87 – 95 title, vocab, q:1-6

2. Ch 2 Plate TectonicsCornell Notes Topic: Ch 2.1 Taking a ride on the Lithosphere “L-plate” Objective : Measuring the motion of L-plates Standard: Es 3a-f dynamic Earth process

3. 1. Speed Speed = v= d/t distance / time mph meters/sec x direction - y direction 2 dimensions Only worry about 1-dimension

4. 2. Gps for motion Global Positioning system, satellites send/receive signals to …. Cell phone, cpu, TV, news, cars Receiver on a continent then the satellite keeps track of the motion. Topography is elevation, so Gps measures 3-dimensions

5. 3. Change in spacing Do the mountains change? Always Topography is always changing ocean basin – basalt- volcanic rock from the mid ocean ridge – lava! Compass points – North but every 25k changes point south Lava out of the mid ocean ridge has different magnetic polarity - Zebra pattern - stripes

6. 4. Rate of motion Draw a picture that is changing in speed … Like a sitting person then standing then walking then running …

7. 5. GPS offset Mid ocean ridge – straight line then … EQ then…Shift …then it’s not a straight line. “offset” Lava ridge offset Make sure you do the summary: 2 sentence

8. U/A p.74 1-6 Half sheet North American Plate or pacific plate Rate of plate motion – 1 cm/year = .01 m/year Changing topography in 3-dim Eq – motion can be measured Changing direction of magnetism Plates have different masses, pressure

9. Tsunamis http://www.tsunami.org/students.html Website to educate public on do’s and don’t’s

10. Agenda Thu 10/1 Reminder Make sure your Classwork /Homework Packets are in Fill in Grade sheet due Friday Today Two Handouts Color according to rules (4color min.) Tmrrw: Ch 2 Notes Plate tectonics (keep until Ch. 2 is done) Homework: Due Monday, Early Friday Wed p.64-74 title, vocab, q:1-6 Thu p.76- 85 title, vocab, q:1-7 Fri. p. 87 – 95 title, vocab, q:1-6

11. Volcanic “Cut out” All the lines • 1. Color in 4 areas of Extrusive igneous rock • Give each small crystals • Make the rocks small and worn down by weather 2. Color in 4 areas of Intrusive igneous rock • Give each large crystals • Make the rocks larger then the Extrusive

12. Tephra Plum Add / Color in 3 rocks in the Plum on fire Have lava flowing down the volcano

13. Agenda 10/2/09 • Get work sheet filled in • Ch 2.2 Plate Boundaries • Ch 2.3 What drives the plates? • Assignment sheet: filled inturned in • Hw due: today for extra credit

14. Notes Topic: Ch 2.2 Plate Boundaries Objective: to get notes for lithosphere Standard: Es 3a-f Dynamical process 1. Plate types 2. Rift valley’s 3. Ocean basins size 4. Subduction 5. Mountain formation

15. 1. Plate types Convergent – collide, together, pushing Divergent – miss, apart, pulling away Transform – sliding, slipping, rubbing

16. 2. Rift valleys Depression in the basin of the ocean, aka hole in ground Created by magma rising up to the surface and making the ground collapse Like a sink hole

17. 3. Ocean basin size Mid ocean ridge to the coast changes over time At the coast basin goes under continent At the mid ocean ridge the basin grows

18. 4. Subduction Basin goes under the continents Like an escalator

19. 5. Mountain formation Continents push on each other and ground folds up Which Boundary? Convergent and Transform Not divergent that forms valleys

20. Think about it: don’t copy What causes the movement of the lithospheric plates? Eq, Faults, Hurricanes, Plate Tectonics volcanoes

21. Some surface movement

22. Hawaiian Ridge Perspective

23. Notes Topic : Ch 2.3 What drives the plates? Objective: Describe the motion of the lithosphere Standard: Es # 3 a-f Dynamical Processes Density Average Density Main Layers Pressure v. Temperature Convection currents

24. 1. Density The gravitational force (F) between any two objects in the universe can be expressed this way: F= Gm1m2/d2 m1 and m2 = masses d = distance between G = 6.07X10-11 m/s2 Universe

25. 2. Average Density Radius = 6400km m1 us, m2 Earth Dividing the mass of the Earth by it’s volume gives an average density of the Earth (in metric units) of 5.5 g/cm3 . The density of the rocks commonly found at the surface is much lower. Average density of the surface rocks is 2.8 g/cm3 .

26. 3. Main Layers Get data from table p. 92 Inner core- Outer core- Mantle- Oceanic crust- Continental crust-

27. Ch 2.3 notes:4. Pressure v. Temperature PV=nRT For our class PV=#T As P increases and V is constant T must also increase As P decreases and V is constant T must also decrease

28. 5. Convection currents Temperature increase, material rises, pressure decrease, material cools, descends Temperature decrease, material descends, pressure increase, material heats up, rises

29. Convection

30. Topic: Ch 2.4 Effects of plate tectonics Objective: Features of Earth’s Surface Standard: Earth Science #3a-f Plate tectonics Oceanic Trenches Volcanoes at Plate Boundaries Hotspots Mountains at Plate B.

31. 1. Plate tectonics Greek meaning motion, Building features on the surface of Earth due to “deformation” caused by Movement.

32. 2.Oceanic Trench Deepest valley on Earth, Oceanic plate subducted under ……another plate 10km = 10,000 m = 104m Ocean - Ocean Subduction

33. 3. Volcanoes at Plate Boundaries Convergent pb - mountains, volcanoes, earthquakes GreatPressure! Silica rich magma, Thick, pure, VEI High. Divergent pb – caldera’s

34. 4. Hot spots Magma chamber - mantle under lithosphere, vent sticks thru litho like a straw. Chain of islands or deposits are created as the lithosphere moves over the straw

35. 5. Mountains at Plate B. Draw it …. The title

36. Copy/color from p.117 turn in on separate paper

37. Last of Notes Ch 2.5 Changing Geography Objective: Understand how plate tectonics release the Earths pressure and builds features on the land Standard: Earth science #3a-f 1. Present day: Minerals, fossils distribution 2. Pangea 3. Fossils, minerals, rocks orientation on Pangea 4. Conversion factor for tectonics 5. Ecological regions and Continents

38. 1. Present day: Minerals, fossils distribution Diamond, Gold, Ruby, Peridot Dinosaurs, Ferns, Plants, Birds, Fish, Mammoth Petrified … Wood, Calcium has replaced Organic material Past distribution shows connections on different continents

39. 2. Pangea Supercontinent like p.117-118 How many oceans during this time? 1 250 million years ago to about 200 million Euroasia, Laurasia, Europe! Asia! He will ask, What are the different time periods?p.116Different Names?

40. 3. Fossils, minerals, rocks orientation on Pangea Two or more continents with matching coast line Islands or isolated land has matching fossils as other major continents Magnetic field of ground match up in different locations

41. 4. Conversion factor for tectonics Rate of motion for the plates varies year to yearDraw two plates colliding

42. 5. Ecological regions and Continents Equator, Poles Tropical rain forest Desert Water oceans lakes swamps

43. u/a p.118 1-7 1. Fossil records and coastlines match up on the Pangea 2. Ash layers left behind from volcanoes 3. Alfred Wegner, Alps folds were not explained. 4. Coastline matched up and fossils records coincide 5. Time is needed for Evidence collection 6. Lithosphere floats on Mantle of Magma. 7. Magnetic fields match up all over the world.

44. Notes due tomorrow Ch 2.1 Last week Ch 2.2 Last week Ch 2.3 Monday Ch 2.4 Yesterday today Ch 2.5 Tomorrow To be graded: must be stapled, in order with heading 50 pt total = 10 points each