Transcript Ossana plate tectonics

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_________.
Fri. 2/15 and Wed. 2/20
• 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.
• Fossils of the dinosaur, In:
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
pg 30
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.
When discovered
Scientist
Definition
Theory of
Continental
Drift
What is missing?
Continents
Supporting Evidence
Fossils
Rock
Climatic
Formations
Evidence of Continental Drift
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?
Thurs. 2/21 and Fri. 2/22
• 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 MidAtlantic 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#jCp
After reading:
What makes the heat at the Earth’s core?
Ch. 10 Plate Tectonics
Thru 1: pg 35
Cornell Notes
The Layers of the Earth
© Copyright 2006. M. J. Krech. All rights reserved.
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.
Thru 2: pgs. 36 and 37
Pg. 36
3 Column Vocab
1. Continental Drift
2. Midocean Ridge
3. Sea floor spreading
4. Plate Tectonics
5. Asthenosphere
6. Lithosphere
Pg. 37
7. Subduction zone
8. Convection cell
9. Rifting
10. Supercontinent cycle
11. Pangaea
12. Panthalassa
Out
Tent Paragraph-use the following words
correctly in a paragraph. Highlight the words
within the paragraph.
• Plate tectonics
• Lithosphere
• Asthenosphere
• Convection cell
Mon. 2/25 and Tues. 2/26
Wed. 2/27 and Thurs. 2/28