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Plate Tectonic Drawings, Lecture notes of Earth Sciences

Atlanta School of MassageEarth Sciences

Plate Tectonic Drawings ... On the diagram below, draw arrows in the boxes to indicate the direction of plate movement. Then, draw the motion of the "magma.

Typology: Lecture notes

2021/2022

Uploaded on 09/12/2022

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Plate Tectonic Drawings
Name: ___________________________ Date: __________
Trial #1: Divergence
Teacher Guide
*Student answers will vary. We’ve provided some
suggestions below based on the performance expectations.
1. Gather your supplies; shaving cream can, tub, cards, spoon, mesh screen, and towels. The
shaving cream is magma and the cards and mesh screen are Earth's plates.
2. Create your model by squirting a layer of magma into the bottom of the pan or tub.
3. Use your spoon to flatten the magma so it's evenly distributed.
4. Gently place two of your plates on top of the magma so that they form a rectangle.
5. What do you think will will happen when you pull the plates apart?
-Magma (shaving cream) will come up through the gap.
6. Very slowly, push down and gently slide the two plates apart.
7. What happened?
- Magma oozed up through the gap.
-This is modeling the formation of new seafloor material.
8. On the diagram below, draw arrows in the boxes to indicate the direction of plate
movement. Then, draw the motion of the "magma."
—>—>—>
<—<—<—
pf3
pf4
pf5

Partial preview of the text

Download Plate Tectonic Drawings and more Lecture notes Earth Sciences in PDF only on Docsity!

Plate Tectonic Drawings

Name: ___________________________ Date: __________

Trial #1: Divergence

Teacher Guide

*Student answers will vary. We’ve provided some suggestions below based on the performance expectations.

  1. Gather your supplies; shaving cream can, tub, cards, spoon, mesh screen, and towels. The shaving cream is magma and the cards and mesh screen are Earth's plates.
  2. Create your model by squirting a layer of magma into the bottom of the pan or tub.
  3. Use your spoon to flatten the magma so it's evenly distributed.
  4. Gently place two of your plates on top of the magma so that they form a rectangle.
  5. What do you think will will happen when you pull the plates apart?
    • Magma (shaving cream) will come up through the gap.
  6. Very slowly, push down and gently slide the two plates apart.
  7. What happened?
    • Magma oozed up through the gap.
    • This is modeling the formation of new seafloor material.
  8. On the diagram below, draw arrows in the boxes to indicate the direction of plate movement. Then, draw the motion of the "magma."

Trial #2: Convergence

  1. Wipe your cards clean with a towel to remove excess magma and prepare for the next trial.
  2. Use your spoon to flatten the magma again so it's evenly distributed.
  3. Put the cards back in place on top of the magma
  4. What do you think will happen when you push one plate under the other?
    • Some magma will ooze out, but not as much as when the plates move apart.
    • It might look like a mountain ridge. Volcanoes will come up on the upper plate.
  5. This time, push one plate down and under the other plate.

6. What happened? Some magma oozed out. It sort of looked like a mountain ridge.-

  • No volcanoes formed. This is a place where the model is not showing all of the

real life possibilities. In real life, large volcanoes often form on the upper plate.

  1. On the diagram below, draw arrows in the boxes to indicate the direction of plate movement. Then, draw the motion of the "magma."

---->

---->

------>

Trial # 4 : Island Chain Formation

  1. Set aside the model of convergent and divergent plates to prepare a new model for island chain formation.

  2. Using the mesh material (remember, this also represents one of Earth's plates), hold it flat and free from any surface.

  3. With help from another partner, hold the can under the plate and point it upwards.

  4. What do you think will happen when magma squirts upwards through the plate?

  5. Gently squirt a small amount of magma three times (stay still as you squirt the can!) and slowly move the plate after each squirt.

  6. What happened?

  7. On the diagram below, draw arrows in the boxes to indicate the direction of plate movement. Then, draw the motion of the "magma."

  8. Challenge : Scrape the excess magma into the tub and see if you can recreate the Hawaiian Island Chain!

Hot Spot

  • It will form a volcano mountain.
  • We made a series of volcano mountains in a line.

Map of Earth's Features

  1. Take out the world map, clear acetate sheet, and map of Earth's plates overlay (printed on acetate).
  2. Look at the world map and see if you can identify any plate boundaries where convergence, divergence, or transform movement may occur. (hint: start by looking in the middle of the Atlantic Ocean)
  3. Place the clear acetate sheet over top of the map.
  4. As best you can, trace the plate boundary in the middle of the Atlantic ocean with a dry erase marker.
  5. Do you see any more plate boundaries? Continue tracing areas that you think are potential plate boundaries.
  6. Trace the Hawaiian Island chain.
  7. Place the map of Earth's plates overlay in between yours and the map to compare what you've traced with the official plate boundaries.
  8. Continue tracing plates, using the map and plate overlay as a guide.

Activity Questions

  1. Name one thing you have learned about Earth's features from this activity.
  2. Where do earthquakes generally occur?
  3. Are the Hawaiian Islands on a plate boundary?
  4. Why does Hawai'i have more volcanic activity than some other locations on Earth?
  5. What is a hot spot?
  6. How did the Hawaiian Islands form?

*Student answers will vary. We’ve provided some suggestions

below based on the performance expectations.

  • Earth's features are changing.
  • The hot, inner core of the Earth affects the surface.
  • I can see evidence of the hot inner core by looking at maps of Earth's surface.
  • Earthquakes often occur at plate boundaries (the edges of plates).
  • When plates slide past each other (transform boundaries), there are often

earthquakes because pressure builds up as plates push against each other.

  • No, the Hawaiian Islands are not on a plate boundary
    • The Hawaiian Islands are located on top of a hot spot.
      • A hot spot is an area where hot, molten magma comes through the Earth's

surface and erupts. Hot spots form volcanoes. There are about 40 hot spots on

Earth. These spots are usually stationary.

  • The Pacific crustal plate moved over a hot spot during the process of plate

tectonics. The hot spot stayed still and made a line (a series) of mountains in

the ocean, which we call the Hawaiian Islands. The youngest peak is closest to

the hot spot source. The island chain is clearly visible as a line on maps.