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| Detailed File Information (#1) |
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Description
The relative dating activity allows you to practice relatively dating of volcanic features. After seeing the relative dating lesson you will have the tools necessary to identify which volcanic features are relatively older than others. This object includes 10 images of different volcanic stages of seamount formation. |
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Instructions
Print out the images and put the pictures in the correct order from youngest (most recently formed) to oldest (formed the longest ago). The order of the slides in the acitivy is the correct order from youngest to oldest so try mixing up the images first and then puting them back in the correct order. |
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Keywords
Volcano, Lava, Seamount, Coral, Fringing Reef, Barrier Reef, Atoll |
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Copyright Owner
Enduring Resources for Earth Science Education (ERESE) |
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| Detailed File Information (#2) |
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Description
This activity provides the students with a data set of ages of some of the Hawaiian Volcanoes and seamounts and how far they are from the active volcanism (considered to be the location of the hotspot). By plotting the data on a graph and fitting the data with a line of best fit, the plate velocity can be estimated by taking the slope of the line. |
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Instructions
The students should plot the information in the green and blue columns on the graph paper provided (Plate Velocities Activity Graph Paper). Once the students plot the points they should draw a straight line of best fit (do not connect the points). The graph following the data set is an example of what the students graph should look like. Make sure the students are calculating the slope of the line and not of two data points. Also have the students compare their graphs to the image of the Hawaiian-Emperor chain. They should notice that both their graph and the image of the chain are roughly linear. The students will likely get different plate velocities because the fit their lines will be different. The plate velocity should be approximately 8 cm/year. |
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Keywords
Volcano, Seamount, Plate Velocity, Hotspot, Hawaii |
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Copyright Owner
Enduring Resources for Earth Science Education (ERESE) |
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| Detailed File Information (#3) |
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Description
This activity allows the students to calculate age estimates for the islands and seamounts of Samoa, assuming they were formed by the Pacific Plate traveling over a stationary hotspot. |
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Instructions
The students can either use the velocity they calculated for the Pacific Plate using the Hawaii data or a class average can be taken and then used so that the ages will all be the same. Divide the students into groups and assign them two seamounts or islands to calculate the age of. Then have the students write their results on a data table in the front of the class. This data set can later be compared to actual age information calculated from Samoan samples and the students can come to conclusions about the origin of the Samoan chain. It is important to note that this is not entirely correct to use the velocity calculated using Hawaii data for Samoa because Hawaii is located far to the north of Hawaii. Since the earth is spherical, latitude needs to be taken into account in determine angular rotations but for the scope of the class it was necessary to assume that the same velocity could be use. |
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Keywords
Volcano, Seamount, Samoa, Linear age progression, age |
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Copyright Owner
Enduring Resources for Earth Science Education (ERESE) |
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| Detailed File Information (#4) |
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Description
This is the graph paper that should be used when plotting the data for the plate velocity activity. |
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Instructions
Use this graph paper to plot the data in the plate velocities activity presentation. |
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Keywords
Volcano, Seamount, Plate Velocity, graph paper |
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Copyright Owner
Enduring Resources for Earth Science Education (ERESE) |
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| Detailed File Information (#5) |
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Description
These are the instructions for the Plate Velocities Activity. After completing the Plate Velocities presentations the velocity of the Pacific Plate can be estimated using this data. |
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Instructions
Use these instructions along with the data provided in the Plate Velocities Activity presentation and the Plate Velocities Activity Graph Paper to determine the velocity of the Pacific Plate. |
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Keywords
Volcano, Lava, Seamount, Plate Velocity, Hawaii |
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Copyright Owner
Enduring Resources for Earth Science Education (ERESE) |
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| Detailed File Information (#6) |
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Description
This table provides the calculated ages for the Samoan islands and seamounts using a Pacific Plate velocity of 7 cm/year. This table can be used as a guideline for the approximate ages the students will calculate since a different plate velocity may be used in the calculations. |
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Instructions
Use this table to compare the ages the students calculated based on the instructions and data presented in the Samoa Activity and Samoan Introductory lesson. |
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Keywords
Volcano, Seamount, Samoa, Linear age progression, Age, Pacfic Plate, Plate velocity |
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Copyright Owner
Enduring Resources for Earth Science Education (ERESE) |
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| Detailed File Information (#7) |
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Description
This is the instruction sheet for the Samoa Activity. This document provides the data and equations that will be used to calculate the age of the Samoan islands and seamounts based on their distance from the currently active Vailulu'u volcano (likely location of the Samoan mantle plume). |
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Instructions
Use this instructions sheet to calculate the age of the Samoan islands and seamounts after listening to the Samoa Introductory lesson. The ages calculated can be compared to the Samoan Calculated Age Table but remember if you used a plate velocity other than 7 cm/year you calculated ages will be slightly different than those in the table. |
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Keywords
Volcano, Seamount, Samoa, Linear age progression, Age |
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Copyright Owner
Enduring Resources for Earth Science Education (ERESE) |
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