|
ERESE Master Document Index: |
|
| Teachers Log | Back to index |
| ERESE
Teachers Log |
|
| Lesson
title |
The
Lithosphere Cycle |
| Intent
of the lesson |
Reinforce concepts of diverging and
converging boundaries and their
horizontal and lateral motion. Students manipulate data collected on the time and rate of change of the Earth's surface. Refine student knowledge of the features on the Earth involved in plate tectonics. Compare spreading rates at diverging boundaries to the converging rates at collision/subduction zones. Explore the possibilty of a recycling of the Earth's crust. |
| Ed.
standards |
State Standard SCD135- The student
understands concepts of time and
size relating to the interaction of Earth's processes. SCH231-The student looks for and recognizes that patterns exist within and across systems. National Standard D- Lithospheric plates on the scales of continents and oceans constantly move at rates of centimeters per year in response to movements in the mantle. Major geological events, such as earthquakes, volcanic eruptions, and mountain building, result from these plate motions. |
| Orientation |
Introduce available tools and
concepts so that students feel safe taking intellectual risks |
|
Intent |
Direct
student review of plate tectonic vocabulary and lithospheric structure
to connect to this activity. |
| Procedure | Review prior
knowledge of: 1. the structure of the Earth (lithosphere, etc), the history of the continental drift theory and the break up of Pangea. 2. diagrams of the lateral motion of the plates at diverging, converging and transform boundaries. 3. student generated labeled maps of the lithospheric plates showing their direction of horizontal motion and identified boundary types, including earthquake and volcanic sites. |
|
Type of Evidence |
Questioning |
|
Teacher profile |
Gives
specific instructions (4) Who can tell us the mechanism of plate
tectonics? What type of motion occurs at subduction zones? |
|
Student profile |
Provided with specific instructions (1) Students demonstrate knowledge of plate tectonic vocabulary and lithospheric structure. |
| Fieldwork |
Give
students experience to foster their interest and ownership; provoke
students to explore, observe and generate their own questions about the
phenomenon |
|
Intent |
Map interpretation, collection of established data, internet access to other materials |
|
Procedure |
Provocative phenomenon If new ocean floor is being formed at the mid-ocean ridges is the Earth getting bigger? Lithospheric plate motion can be measured. The growth of the lithosphere at diverging boundaries must be balanced by converging lithospheric plates. 1. Students will be provided with three pages; one plate boundary map of the showing rates and direction of motion at plate boundaries, a cross-sectional diagram of the Earth at 0 degrees latitude (the equator) showing the layered structure of the Earth and the lateral motions of the lithosphere, and a data analysis worksheet. 2. Students will study the plate boundary map and transfer the cm/yr data gathered at 0 degrees latitude onto the cross-sectional diagram. Spreading centers have a positive number value, subduction/collision zones will have a negative number value in cm/yr. 3. Students will then enter the data collected onto the data assessment worksheet and add up the motion data for each boundary to discover a net growth or reduction value for the Earth's crust at that latitude. 4. Students will then analyze the data and theorize possible explanations for the results. Likely observations- There are two diverging boundaries and 3 converging boundaries at 0 degrees latitude. Rates of convergence and divergence vary within a single boundary. Students can estimate the rate at the equator. Motion is not directly east-west at the boundaries. Plate motion is slow in relation to other earth processes. |
|
Type of Evidence |
Questions |
|
Teacher profile |
Provides
a focus for observations that allows for adaptations (2) Be sure you
identify the feature as a converging or diverging zone. What is
happening to the Pacific basin? |
|
Student profile |
Selects
and clarifies provided observations (3) Gathers data accurately, asks
for help as needed. |
| Debriefing |
Teacher honors all student observations, questions and hypotheses in order to identify and discuss their viability as a research topic. |
|
Intent |
Facilitates
students in interpreting
the data and generating questions. |
|
Procedure |
Teacher
encourages students to carefully collect and interpret the data. Student pairs: 1. Study the map, directions, continents, etc. 2. Identify tectonic features, label them on all worksheets; mantle, lithosphere, convection cell, etc. 3. Locate the equator. 4. Pull rate data off the map and insert on the cross-sectional diagram 5. Enter the data in the analysis sheet. 6. Calculate the net plate motion. |
|
Type of Evidence |
Student
analysis of the data using appropriate vocabulary. |
|
Teacher profile |
Provides
an opportunity to generate questions (1) What do you think is happening? |
|
Student profile |
Selects and adapts from questions provided ( 3) Complete conclusion questions and compares the data to other latitudes. |
| Experimental
design |
1.
Students will be provided with three pages; one plate boundary map showing rates
and direction of motion at
plate boundaries, a cross-sectional
diagram of the Earth at 0 degrees
latitude (the equator) showing the layered structure of the Earth and
the lateral motions of the lithosphere, and a data analysis
worksheet. 2. Students will make predictions (testable hypothesis) as to the balance in plate motion between the diverging and converging boundaries |
| Data
collection |
Explain
approach for data collection |
|
Intent |
Students
recognize plate tectonic features on the map and accurately collect
rate information. |
|
Procedure |
1.
Students will study the plate boundary map and transfer the cm/yr
data gathered at 0 degrees latitude onto the
cross-sectional diagram. Identify mid-ocean ridges, subduction
zones, continental plates, oceanic plates,etc. 2. Spreading centers have a positive number value, subduction/collision zones will have a negative number value in cm/yr. |
|
Type of Evidence |
Questioning |
|
Teacher profile |
Guides
learners as to what evidence to collect and how to collect it; learner
decides method (2) |
|
Student profile |
Guided to collect specific data and do specific data analysis (3) |
| Data
analysis |
Define approach for analyzing data |
|
Intent |
Calculate
net plate motion |
|
Procedure |
1.
Students will then enter the data collected onto the data assessment
worksheet 2. Add up the motion data for each boundary to discover a net growth or reduction value for the Earth's crust at that latitude. |
|
Type of Evidence |
Questions
and hypothesis using plate tectonic vocabulary |
|
Teacher profile |
Guides
the learner to analyze and interpret data (2) How do the spreading
rates in the Atlantic compare to the spreading rates in the
Pacific? Do you find any converging boundaries in the Atlantic
Ocean? |
|
Student profile |
Guided
in process of formulating explanations (3)
|
| Presentation |
Teacher provides students an opportunity to prepare and communicate what students have learned. |
|
Intent |
Student
pairs generated questions and conclusions regarding the net plate
motion. |
|
Procedure |
Students
complete conclusion questions. 1. New sea floor is being formed at ________________ and sea floor is being pulled into the mantle at __________________________. 2. What is the total average rate of spreading at diverging boundaries at 0 degrees latitude? 3. What is the total average rate of subduction/collision at converging boundaries at 0 degrees latitude? 4. Are average diverging rates and converging rates balanced? 5. If Earth's crust is not expanding, then how can you explain the difference? 6. Look at the East Pacific Rise, predict what is going to happen to the sea floor produced on the east side of the ridge? 7. Which ocean basin is growing? 8. Which ocean basin is getting smaller? |
|
Type of Evidence |
Accurate
data analysis and reasonable hypothesis using plate tectonic vocabulary |
|
Teacher profile |
Encourages/monitors
formation of logical arguments to explain data: expects learners to
develop logical presentation of results (1) |
|
Student profile |
Partners
collaborate to form reasonable arguments and conclusions (4)
The lithospheric motion of today may be projected into the future. |
| CP0001 Expedition - Cruise Planning | Back to index |
| M00001 Simple Seafloor Spreading (Reykjanes Ridge) | Back to index |
| Standard | Subject | ||||||
| M00001 | Simple Seafloor Spreading | ||||||
| General Metadata | |||||||
| magnetic
anomalies, seafloor spreading, magnetic stripes, magnetism, magnetic
anomaly, mid-ocean ridge |
|||||||
| Level (L) | Images (I) | Data (D) | Text (T) | ||||
| 1-2 (Elementary) |
Photograph of bar magnet and nearby iron filings | Index Page | |||||
| 3 (Middle School) |
Magnetic Seafloor and Deeper Reversals | Table 1: Le Pichon 1968 | Index Page | Definition of Mid-Ocean Ridge | Index Page | ||
| 4 (High School) |
Age of the Seafloor Along Reykjanes Ridge | Index Page | Cross-Section Formation of Magnetic Anomalies with Geologic Timescale | Index Page | Definition of Seafloor Spreading | Index Page | |
| 5 (College) |
Magnetic Polarities Along Reykjanes Ridge | Index Page | Magnetic Poloraity and Ocean Depth Versus Longitude Along the Reykjanes Ridge | Index Page | Abstract-Heirtzler et al 1966 | Index Page | |
| 6-9 (Graduate & Research) |
Figure 1: Heirtzler et al 1966 | Index Page | Figure 2-Heirtzler et al 1966 | Index Page | Abstract-Heirtzler et al 1966 | Index Page | |
| M00002 Complex Seafloor Spreading | Back to index |
| Standard | Subject | ||||||
| M00002 | Complex Seafloor Spreading | ||||||
| General Metadata | |||||||
| magnetic
anomalies, seafloor spreading, magnetic stripes, |
|||||||
| Level (L) | Images (I) | Data (D) | Text (T) | ||||
| 1-2 (Elementary) |
Seafloor Spreading Animation | Index Page | |||||
| 3 (Middle School) |
Magnetic Particles in Oceanic Sediment | Index Page | Cross-Section Formation of Magnetic Anomalies with Geologic Timescale | Index Page | Text 01 from Vine 1966 | Text 01 from Vine 1966 | |
| 4 (High School) |
Magnetic Anomalies Off the Coast of the Pacific Northwest | Index Page | Geomagnetic-Polarity Epochs and Respective Age of Seafloor | Index Page | Text 04 from Vine 1966 | Text 04 from Vine 1966 | |
| Magnetic Anomalies and the Sea-floor Spreading Rate | Index Page | ||||||
| 5 (College) |
Figure 1-Vine 1966 (Raff & Mason) | Index Page | Table 1. Mid-Ocean Ridge Data Table (Wilson) | Index Page | Chapter 2 Mason - Oreskes | Chapter 2 Mason - Oreskes | |
| Multiple Maps of Diverging Plate Boundary and Cruise Paths | Index Page | Magnetic Profile and Map of Spreading Center | Index Page | ||||
| 6-9 (Graduate & Research) |
Magnetic Anomaly Data for Multiple Seafloor Locations | Index Page | Magnetic Anomlay Data from Multiple Seafloor Locations | Index Page | Chapter 3 Vine - Oreskes | Chapter 3 Vine - Oreskes | |
| Map of Diverging Plate Boundary and Cruise Path | Index Page | Magnetic Profiles and Map of Diverging Plate Boundary | Index Page | ||||
| M00006 Magnetic Reversals | Back to index |
| Standard | Subject | ||||||
| M00006 | Magnetic Reversals | ||||||
| General Metadata | |||||||
| magnetic field reversals, geomagnetic field reversals | |||||||
| Level (L) | Images (I) | Data (D) | Text (T) | ||||
| 1-2 (Elementary) |
Magnetic Reversal Video Along a Spreading Center | Index Page | Magnetic Rock Sample Polarity Data Table | Index Page | Definition of Magnetic Reversal - Elementary School | Index Page | |
| 3 (Middle School) |
Figure of a Normal and Reversed Magnetic Field | Index Page | Magnetic Reversal Data and Timescale | Index Page | Definition of Magnetic Reversal - Middle School | Index Page | |
| 4 (High School) |
Direction of Changing Magnetic Poles based on Basalt Samples in Japan | Index Page | Magnetic Reversal Data Table | Index Page | |||
| Magnetic Profiles | Index Page | ||||||
| 5 (College) |
Magnetic Field Reversal Video | Index Page | Magnetic Profile Data Across the East Pacific Rise | Index Page | |||
| 6-9 (Graduate & Research) |
Magnetic Reversals Based on Dipole and Nondipole Field Strength | Index Page | Paleomagnetic Data of Field Intensity and Polarity | Index Page | Chapter 6 - Oreskes: Morley | Chapter 6 - Oreskes: Morley | |
| M00008 Seamounts | Back to index |
| Standard | Subject | ||||||
| M00008 | Seamounts | ||||||
| General Metadata | |||||||
| Level (L) | Images (I) | Data (D) | Text (T) | ||||
| 1-2 (Elementary) |
|||||||
| 3 (Middle School) |
|||||||
| 4 (High School) |
Bathymetric map of the Magellan Seamount Trail including Vlinder Morphology Analysis | Index Page | |||||
| Bathymetry of the Magellan Seamount Trail | Index Page | ||||||
| Ralik and Ratak Seamount Trails | Index Page | ||||||
| 5 (College) |
Map of West Pacific Seamount Province | Index Page | |||||
| Map of the Japanese Seamount Trail | Index Page | ||||||
| WPSP Seamount Trails | Index Page | ||||||
| 6-9 (Graduate & Research) |
West Pacific Seamount Province and the Japanese Seamounts | Index Page | |||||
| Northern and Southern Wake Seamount Trails | Index Page | ||||||
| Euler Pole derivation | Index Page | ||||||
| M00013 Tectonic Plates | Back to index |
| Standard | Subject | ||||||
| M00013 | Tectonic Plates | ||||||
| General Metadata | |||||||
| plate tectonics, tectonic plates, crustal blocks, lithospheric plates | |||||||
| Level (L) | Images (I) | Data (D) | Text (T) | ||||
| 1-2 (Elementary) |
The Earth's Layers | Index Page | Plate Tectonics and Volcanoes | Index Page | Definition of Lithospheric Plates and Plate Tectonics | Index Page | |
| 3 (Middle School) |
The Major Tectonic Plates of the World | Index Page | Map of Tectonic Plates and Their Movement | Index Page | Fill-in-the-Blank Plate Tectonic Exercise | Index Page | |
| 4 (High School) |
Map of the North American Plate and the Eurasian Plate Diverging Over Iceland | Index Page | Geology of Africa and South America | Index Page | |||
| 5 (College) |
Diagram Illustrating Components of Plate Tectonics | Index Page | Movement between Tectonic Plates (Table 5) | Index Page | Chpt 1. -- Oreskes | Index Page | |
| 6-9 (Graduate & Research) |
Rates of Plate Rotation (Table 4) | Index Page | Abstract -- Morgan | Abstract -- Morgan | |||
| M00016 Convergent Boundaries | Back to index |
| Standard | Subject | ||||||
| M00016 | Convergent Plate Boundaries | ||||||
| General Metadata | |||||||
| Level (L) | Images (I) | Data (D) | Text (T) | ||||
| 1-2 (Elementary) |
The Eurasian Plate and Indian Plate Converging to Create the Himalayas | Index Page | |||||
| 3 (Middle School) |
Subduction Zone | Index Page | Relationship of Temperature and Earthquakes in a Downgoing Slab | Index Page | |||
| 4 (High School) |
The Collision of Two Continents | Index Page | Temperature Distribution in a Sinking Lithospheric Plate Compared to Surrounding Mantle | Index Page | Converging Plate Boundaries | Index | |
| Global image of the Pacific Margins | Index Page | ||||||
| 5 (College) |
|||||||
| 6-9 (Graduate & Research) |
|||||||
| M00017 Divergent Boundaries | Back to index |
| Standard | Subject | ||||||
| M00017 | Divergent Plate Boundaries | ||||||
| General Metadata | |||||||
| divergent plate boundary, spreading center | |||||||
| Level (L) | Images (I) | Data (D) | Text (T) | ||||
| 1-2 (Elementary) |
Simple Figure for a Divergent Boundary | Index Page | Simple Definition of Divergent Plate Boundaries | Index Page | |||
| 3 (Middle School) |
Image of a Divergent Boundary | Index Page | Heat Level Data Over Divergent Boundary | Index Page | Definition of Divergent Plate Margins - Middle School | Index Page | |
| 4 (High School) |
Divergent Boundary Between Two Continents | Index Page | Gravity Data Over Oceanic Ridge | Index Page | |||
| 5 (College) |
Topographic Map of a Divergent Plate Boundary | Index Page | |||||
| 6-9 (Graduate & Research) |
|||||||
| M00018 Strike Slip Boundaries | Back to index |
| Standard | Subject | ||||||
| M00018 | Strike-Slip Plate Boundaries | ||||||
| General Metadata | |||||||
transform faults, strike-slip faults |
|||||||
| Level (L) | Images (I) | Data (D) | Text (T) | ||||
| 1-2 (Elementary) |
3-D Image with Arrow Plate Motion | Index Page | |||||
| 3 (Middle School) |
Transform fault at Mid-Ocean Ridge vs. Seafloor Age | Index Page | Definition of Transform Fault | Index Page | |||
| 4 (High School) |
Fig. 1-Wilson 1965: Transform and Transcurrent Faults | Index Page | Text 01-Wilson
1965: Definition of Transform and Transcurrent Faults |
Text 01-Wilson
1965: Definition of Transform and Transcurrent Faults *need to scan & archive* |
|||
| 5 (College) |
Mendocino Transform Fault | Index Page | |||||
| 6-9 (Graduate & Research) |
Fig.3-Wilson 1965: Juan de Fuca Ridge and related faults | Index Page | Table 1-Wilson 1965: Location of points on Figure 3 | Index Page | |||
2004-07-19 09:15 AM