Presentation on theme: "Mon. 2/11 and Tues. 2/12 No Practice Proficiency today. Turn in review sheet. Test-Ch. 8 today – Make sure you write your test version on your scantron."— Presentation transcript:
Mon. 2/11 and Tues. 2/12 No Practice Proficiency today. Turn in review sheet. Test-Ch. 8 today – Make sure you write your test version on your scantron. INB check #1 today – Make sure you leave your notebooks today!!!!!!
A polished mineral that is rare is called a what? A. Silicate B. Crystal C. Gem D. Ion
21. The greatest amount of damage from an earthquake will occur at the a. focus.c. seismograph. b. epicenter.d. edges of the seismic zone.
Pg. 24 Chapter 10 Plate Tectonics Overview 1.What is the title of section 1? 2.List all of the objectives for section 1. 3.What is the title of section2? 4.List all of the objectives for section 2. 5.What is the title of section 3? 6.List all of the objectives for section 3.
Pg. 25 Title Page for chapter 10 Chapter number and chapter title. 3 pictures having to do with the chapter 3 keywords 3 colors
Wed. 2/13 and Thurs. 2/14 Pick up your notebooks from the side counter. If you were absent last class, you missed a test and need to leave your INB with the teacher to be graded.
How are scientists able to study the composition and size of the interior layers of the Earth? a.By direct observation b.By analyzing surface rock samples c.By using seismic waves d.By deep drilling into the interior layers
In: pg 26 Watch the movie clip “ The Earth’s Interior” and write down 5 facts(7 minutes). 1. 2. 3. 4. 5.
Thru 1: Pg 27 The Earth’s Interior Questions Read the front and complete the questions on the back. Tape in as a flap
Pg. 28 blank Pg. 29 Subsurface Changes on Earth Worksheet Homework if not completed in class.
Out Fill in the blank with: increase, decrease or stays the same As we go deeper into the Earth, the temperature __________, pressure ___________ and density_________.
Which statement BEST describes how new scientific views become accepted? a)A group of scientists come to common agreement over an idea at the same time. b)New ideas become a theory when hypotheses are proven to be correct. c)When a theory gains so much support it becomes a scientific law. d)When observations of our natural world produce plausible explanations.
In: pg 30 Fossils of the dinosaur, Cryolophosaurus were discovered in Antarctica in 1991. In the picture, is the environment that the dinosaur lived in. How do you explain the difference between the Antarctic of the past and of the present? Antarctic of today
Thru 1: pg. 31 Please copy this concept map and then complete it by filling in one appropriate descriptor at the end of each arrow. Use pages 239-241 in the textbook. Theory of Continental Drift Scientist What is missing? Supporting Evidence Definition When discovered Fossils Continents Rock Formations Climatic
Thru 2 Pg. 32-use the supercontinent on pg. 33 to answer these questions. Analysis Questions: 1.What are 3 pieces of evidence you used to fit together the continents? 2.Why is this called a supercontinent? 3.How does this model help support the Theory of Continental Drift? 4.Why aren’t the continents still in this location today? Pg. 33 Supercontinent Cutout. Cutout the continents and fit them together to make the supercontinent that Wegener proposed. Glue them on this page.
Out In Wegener’s time, his theory was ridiculed. Why do you think that many scientists initially rejected the idea of continental drift?
Prior to Alfred Wegener’s theory of continental drift geologists thought continents were fixed in their locations. In developing his theory which of the following evidence was NOT used by Wegener? a)Fossil similarities between southern continents. b)Evidence of polarity change in found along the Mid- Atlantic Ridge. c)Similarities in the paleoclimates of South America and Africa. d)The apparent fact the South America and Africa seemed to fit together.
In: Pg 34 As you travel towards the center of the Earth, the temperature increases because of heat generated by the core. Before reading: What makes the heat at the Earth’s core?
Why is the core so hot? It's a combination of radioactivity (the radioactive materials in the Earth generate heat) and the residual heat from the formation of the Earth. When all of the matter that created the Earth fell together, it picked up kinetic energy falling in. When it stopped at the proto-Earth, the kinetic energy was turned into heat. The Earth hasn't cooled yet. But, the vast majority of the heat in Earth's interior—up to 90 percent—is fueled by the decaying of radioactive isotopes like Potassium 40, Uranium 238, 235, and Thorium 232 contained within the mantle. These isotopes radiate heat as they shed excess energy and move toward stability. "The amount of heat caused by this radiation is almost the same as the total heat measured emanating from the Earth." Read more at: http://phys.org/news62952904.html#jCphttp://phys.org/news62952904.html#jCp
After reading: What makes the heat at the Earth’s core?
The Lithospheric Plates The crust of the Earth is broken into many pieces called plates. The plates "float" on the soft, semi-rigid asthenosphere.
The Asthenosphere The asthenosphere is the semi- rigid part of the middle mantle that flows like hot asphalt under a heavy weight.
Convection Currents The middle mantle "flows" because of convection currents. Convection currents are caused by the very hot material at the deepest part of the mantle rising, then cooling and sinking again --repeating this cycle over and over.
Convection Currents The next time you heat anything like soup or water in a pan you can watch the convection currents move in the liquid. When the convection currents flow in the asthenosphere they also move the crust. The crust gets a free ride with these currents, like the cork in this illustration.