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: PEARSON
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i don't understand the question for

 

number 6 and how the hint of knowing the age of the reverse polarity stripe helps. Using the magnetic anomaly pattern the in the Elrond Sea, determine the spreading rate on the Hobbit Ridge (i. e., determine how fast the Frodo continent is moving away from the Hobbit ridge). Give m your answer in m (millimeters per year). y Follow the procedure below to answer this question. a. What is the length of the 1000km scale bar on your Geoworld map? Measure it to the nearest millimeter (mm). Scale bar length in mm Answer here mm, 13mm b. Imm on the map = 1000k answer from 4a) = Answer here km on 1000 Geoworld c. What is the distance m from the center of the Hobbit Ridge to the continent (either one)? i. Hobbit Ridge to continent distance in mm (measure it with a ruler) Answer here mm 28 ii. Hobbit Ridge to continent distance in km ( calculate it from 4b above) Answer here km1, 211, 38km d. Using your answers from questions 4cii and 3 calculate the m 1 m spreading rate in ka. Then convert k M 171 m million years to my year. Ik million years = 18.18.1km Rer 1 mil yri. 8. Im y m spreading rate Answer here m- What is y the full spreading rate (in mm) of the y Hobbit Ridge? (i. e., how fast are the Bilbo and Frodo continents moving away from 171 each other)? 16.2m-p, 16.2mp Full spreading rate y = Answer here m" Using the magnetic y anomaly patterns in the Aragorn Ocean, determine when sea floor spreading

 

started to form the Aragorn Ocean crust |

 

remember, spreading is not actively going

 

on now but it was at one time). Hint you

 

need to determine the age of the reverse

 

polarity stripe that is against the west side

 

of the Bilbo Continent. Seafloor Spreading

 

Started Answer here Ma ago

Answer here Ma ago
4. Using the magnetic anomaly pattern in the Elrond Sea, determine the 1/2-spreading
rate on the Hobbit Ridge (i.e., determine how fast the Frodo continent is moving away
from the Hobbit ridge). Give your answer in mm/y (millimeters per year). Follow the
procedure below to answer this question.
a. What is the length of the 1000km scale bar on your Geoworld map? Measure it to
the nearest millimeter (mm). Scale bar length in mm = Answer here mm 27 mm
1 mm on the map = 1000 km / (answer from 4a) = Answer here km on
Geoworld
b.
> k/m
= 43.478 кт
827m
c.
What is the distance from the center of the Hobbit Ridge to the continent (either
one)?
1,217
i. Hobbit Ridge to continent distance in mm (measure it with a ruler) =
Answer here mm 28
ii.
Hobbit Ridge to continent distance in km (calculate it from 4b above)
= Answer here km 1,217, 38 km
d. Using your answers from questions 4cii and 3 calculate the ½ spreading rate in
km/Ma. Then convert km/million years to mm/year. 1 km/million
years = 1
mm/yr.
8.1km
Per i mil you.
8.1
1000
mm|yp.
8.1 mm
½ spreading rate = Answer here mm/y
5. What is the full spreading rate (in mm/y) of the Hobbit Ridge? (i.e., how fast are the
Bilbo and Frodo continents moving away from each other)?
16.2
mmlyn
Full spreading rate = Answer here mm/y
6. Using the magnetic anomaly patterns in the Aragorn Ocean, determine when sea floor
spreading started to form the Aragorn Ocean crust (remember, spreading is not
actively going on now but it was at one time). Hint - you need to determine the age of the
reverse polarity stripe that is against the west side of the Bilbo Continent.
Seafloor Spreading Started Answer here Ma ago
expand button
Transcribed Image Text:Answer here Ma ago 4. Using the magnetic anomaly pattern in the Elrond Sea, determine the 1/2-spreading rate on the Hobbit Ridge (i.e., determine how fast the Frodo continent is moving away from the Hobbit ridge). Give your answer in mm/y (millimeters per year). Follow the procedure below to answer this question. a. What is the length of the 1000km scale bar on your Geoworld map? Measure it to the nearest millimeter (mm). Scale bar length in mm = Answer here mm 27 mm 1 mm on the map = 1000 km / (answer from 4a) = Answer here km on Geoworld b. > k/m = 43.478 кт 827m c. What is the distance from the center of the Hobbit Ridge to the continent (either one)? 1,217 i. Hobbit Ridge to continent distance in mm (measure it with a ruler) = Answer here mm 28 ii. Hobbit Ridge to continent distance in km (calculate it from 4b above) = Answer here km 1,217, 38 km d. Using your answers from questions 4cii and 3 calculate the ½ spreading rate in km/Ma. Then convert km/million years to mm/year. 1 km/million years = 1 mm/yr. 8.1km Per i mil you. 8.1 1000 mm|yp. 8.1 mm ½ spreading rate = Answer here mm/y 5. What is the full spreading rate (in mm/y) of the Hobbit Ridge? (i.e., how fast are the Bilbo and Frodo continents moving away from each other)? 16.2 mmlyn Full spreading rate = Answer here mm/y 6. Using the magnetic anomaly patterns in the Aragorn Ocean, determine when sea floor spreading started to form the Aragorn Ocean crust (remember, spreading is not actively going on now but it was at one time). Hint - you need to determine the age of the reverse polarity stripe that is against the west side of the Bilbo Continent. Seafloor Spreading Started Answer here Ma ago
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