1. 1. Tape two strips together to make one longer strip
1. Tape two strips together to make one longer strip. Repeat so you end up with a set of long strips.
2. Push two desks or tables side by side, almost touching to create a tiny slit.
3. Place the paper strips together and run them up through the slit between the tables.
4. Pull the strips out about 8 cm and fold them back on opposite sides.
5. Flatten two pieces of modeling clay. Press each portion of the clay on the end of each strip to make a place-holder. Color the strips of paper with one color.
6. Slowly push the strips up through the slit approximately 4 cm. Flatten the strips, repositioning the clay place-holder as needed. Use a different color and shade in the newly exposed paper on either side of the slit.
7. Push approximately 6 cm of the strips through the slit. Flatten the strips and use a different colored pencil to color the new material.
8. Repeat steps 6 and 7 several more times, varying the amount of paper that is pushed through on both sides of the slit. Use a new color each time you move the paper.

2. Modeling Seafloor Spreading - Diagram
After Modeling:
Draw your set-up and results
(JP 71 top section)
Label and identify what each of the following parts represents
(JP 71 top section):
(A) desk top
(B) area under the desk top
(C) opening between the desk top
(D) paper strips
(E) alternating colors

3. #1: What force might be causing the lithospheric plates to pull apart?

4. #2: What is the name of the landform located where two oceanic plates are pulling apart?

5. #3: Do you think the crust is being destroyed or created at locations where the plates are pulling apart? Explain your reasoning.

6. #4: If one desk represented the North American plate, and the other desk represented the Eurasian plate, what is actually happening to the distance between North America and Europe?

7. #5: On your seafloor paper model, where is the OLDEST seafloor located
#5: On your seafloor paper model, where is the OLDEST seafloor located? How do you know?

8. #6: On your seafloor paper model, where is the NEWEST seafloor located
#6: On your seafloor paper model, where is the NEWEST seafloor located? How do you know?