Homework Help is Here – Start Your Trial Now!
Science
Earth Science
Notice on Figure 2 that the ages of the rocks in eastern South America and western Africa are similar. The rocks that comprise the ocean floor separating the two continents are much younger. 7. If the South American and African continents are brought together at the mid-ocean ridge, do the areas of ancient rocks match? Does the match support the idea that these continents were once joined? (Note: Actually, the fit of the continents is more exact on a globe because flat maps have distor- tions. Also, using the seaward edge of the conti- nental shelf rather than the coastline would be more accurate.) 8. In Figure 1, identify each of the present-day conti- nents that comprised Pangaea by writing their names at the proper locations on the top figure. 9. Most deep-focus earthquakes are associated with (mid-ocean ridges, deep-ocean trenches). Circle your answer. 10. Most mid-ocean, shallow-focus earthquakes are associated with (mid-ocean ridges, deep-ocean trenches). 11. After you compare the earthquake distribution map to the plate map, write a brief statement de- scribing the relation between earthquakes and the rigid plates that comprise Earth's outer shell. Paleomagnetism Some minerals in igneous rocks develop a slight mag- netism in alignment with Earth's magnetic field at the time of their formation. Also, scientists have discov- ered that the polarity of Earth's magnetic field has pe- riodically reversed and the North Magnetic Pole becomes the South Magnetic Pole while the South

Notice on Figure 2 that the ages of the rocks in eastern South America and western Africa are similar. The rocks that comprise the ocean floor separating the two continents are much younger. 7. If the South American and African continents are brought together at the mid-ocean ridge, do the areas of ancient rocks match? Does the match support the idea that these continents were once joined? (Note: Actually, the fit of the continents is more exact on a globe because flat maps have distor- tions. Also, using the seaward edge of the conti- nental shelf rather than the coastline would be more accurate.) 8. In Figure 1, identify each of the present-day conti- nents that comprised Pangaea by writing their names at the proper locations on the top figure. 9. Most deep-focus earthquakes are associated with (mid-ocean ridges, deep-ocean trenches). Circle your answer. 10. Most mid-ocean, shallow-focus earthquakes are associated with (mid-ocean ridges, deep-ocean trenches). 11. After you compare the earthquake distribution map to the plate map, write a brief statement de- scribing the relation between earthquakes and the rigid plates that comprise Earth's outer shell. Paleomagnetism Some minerals in igneous rocks develop a slight mag- netism in alignment with Earth's magnetic field at the time of their formation. Also, scientists have discov- ered that the polarity of Earth's magnetic field has pe- riodically reversed and the North Magnetic Pole becomes the South Magnetic Pole while the South

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
See similar textbooks
icon
Related questions
Question
200 Million Years Ago (Late Triassic Period) 90 Million Years Ago (Cretaceous Period) Present PANGAEA 343 Figure 1 Pangaea, as it is thought to have appeared 200 million years ago. (After R. S. Dietz and J. C. Holden, Journal of Geophysical Research 75: 4943.)
Transcribed Image Text:200 Million Years Ago (Late Triassic Period) 90 Million Years Ago (Cretaceous Period) Present PANGAEA 343 Figure 1 Pangaea, as it is thought to have appeared 200 million years ago. (After R. S. Dietz and J. C. Holden, Journal of Geophysical Research 75: 4943.)
Notice on Figure 2 that the ages of the rocks in eastern South America and western Africa are similar. The rocks that comprise the ocean floor separating the two continents are much younger. 7. If the South American and African continents are brought together at the mid-ocean ridge, do the areas of ancient rocks match? Does the match support the idea that these continents were once joined? (Note: Actually, the fit of the continents is more exact on a globe because flat maps have distor- tions. Also, using the seaward edge of the conti- nental shelf rather than the coastline would be more cate.) 8. In Figure 1, identify each of the present-day conti- nents that comprised Pangaea by writing their names at the proper locations on the top figure. Earthquakes The distribution and depths of earthquakes provide evidence for the mechanics of plate tectonics. Examine the world map of plates, Figure 3, and compare it to an earthquake distribution map. Use he maps and Figure 2 to answer questions 9-11. 9. Most deep-focus earthquakes are associated with (mid-ocean ridges, deep-ocean trenches). Circle your answer. 10. Most mid-ocean, shallow-focus earthquakes are associated with (mid-ocean ridges, deep-ocean trenches). 11. After you compare the earthquake distribution map to the plate map, write a brief statement de- scribing the relation between earthquakes and the rigid plates that comprise Earth's outer shell. Paleomagnetism Some minerals in igneous rocks develop a slight mag- netism in alignment with Earth's magnetic field at the time of their formation. Also, scientists have discov- ered that the polarity of Earth's magnetic field has pe- riodically reversed and the North Magnetic Pole becomes the South Magnetic Pole, while the South Magnetic Pole becomes the North Magnetic Pole. Putting these facts together provides additional sup- port for plate tectonics.
Transcribed Image Text:Notice on Figure 2 that the ages of the rocks in eastern South America and western Africa are similar. The rocks that comprise the ocean floor separating the two continents are much younger. 7. If the South American and African continents are brought together at the mid-ocean ridge, do the areas of ancient rocks match? Does the match support the idea that these continents were once joined? (Note: Actually, the fit of the continents is more exact on a globe because flat maps have distor- tions. Also, using the seaward edge of the conti- nental shelf rather than the coastline would be more cate.) 8. In Figure 1, identify each of the present-day conti- nents that comprised Pangaea by writing their names at the proper locations on the top figure. Earthquakes The distribution and depths of earthquakes provide evidence for the mechanics of plate tectonics. Examine the world map of plates, Figure 3, and compare it to an earthquake distribution map. Use he maps and Figure 2 to answer questions 9-11. 9. Most deep-focus earthquakes are associated with (mid-ocean ridges, deep-ocean trenches). Circle your answer. 10. Most mid-ocean, shallow-focus earthquakes are associated with (mid-ocean ridges, deep-ocean trenches). 11. After you compare the earthquake distribution map to the plate map, write a brief statement de- scribing the relation between earthquakes and the rigid plates that comprise Earth's outer shell. Paleomagnetism Some minerals in igneous rocks develop a slight mag- netism in alignment with Earth's magnetic field at the time of their formation. Also, scientists have discov- ered that the polarity of Earth's magnetic field has pe- riodically reversed and the North Magnetic Pole becomes the South Magnetic Pole, while the South Magnetic Pole becomes the North Magnetic Pole. Putting these facts together provides additional sup- port for plate tectonics.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Applications and Investigations in Earth Science …
Applications and Investigations in Earth Science …
Earth Science
ISBN:
9780134746241
Author:
Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:
PEARSON
Exercises for Weather & Climate (9th Edition)
Exercises for Weather & Climate (9th Edition)
Earth Science
ISBN:
9780134041360
Author:
Greg Carbone
Publisher:
PEARSON
Environmental Science
Environmental Science
Earth Science
ISBN:
9781260153125
Author:
William P Cunningham Prof., Mary Ann Cunningham Professor
Publisher:
McGraw-Hill Education
Earth Science (15th Edition)
Earth Science (15th Edition)
Earth Science
ISBN:
9780134543536
Author:
Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:
PEARSON
Environmental Science (MindTap Course List)
Environmental Science (MindTap Course List)
Earth Science
ISBN:
9781337569613
Author:
G. Tyler Miller, Scott Spoolman
Publisher:
Cengage Learning
Physical Geology
Physical Geology
Earth Science
ISBN:
9781259916823
Author:
Plummer, Charles C., CARLSON, Diane H., Hammersley, Lisa
Publisher:
Mcgraw-hill Education,
SEE MORE TEXTBOOKS