This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The inner core has not always existed, but formed over time. Explain how conditions in the Earth ... (Read 34 times)

sdfghj

  • Hero Member
  • *****
  • Posts: 552
on: Jul 16, 2018
The inner core has not always existed, but formed over time. Explain how conditions in the Earth changed over time to create an inner core.
 
  What will be an ideal response?

Question 2

Scientists have subdivided the upper mantle into three sections based on environmental and compositional differences. What are these three subdivisions and how do they compare to each other?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

LP

  • Sr. Member
  • ****
  • Posts: 302
Reply #1 on: Jul 16, 2018
Answer to Question 1

Props to you, cheers.

Answer to Question 2

Answer: The uppermost mantle is the lithospheric mantle, which is slightly lower in density and solid. Next down is the asthenosphere, which is similar in peridotite composition to the lithospheric mantle, but is hotter and less rigid, thus allowing lithospheric plates to move over it. The lowest subdivision is the transition zone. This is also where mineral phase changes occur to transform olivine to spinel.


sdfghj

  • Hero Member
  • *****
  • Posts: 552
Reply #2 on: Jul 16, 2018
Thank you :)


LP

  • Sr. Member
  • ****
  • Posts: 302
Reply #3 on: Jul 16, 2018
Happy to help you


« previous next »
 

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Possible Earth 5 billion years from now Possible Earth 5 billion years from now
If you want to show differences between items at the same time, a bar graph is more effective than a If you want to show differences between items at the same time, a bar graph is more effective than a
Gossip and ridicule increase the status insecurity of this time of life. Gossip and ridicule increase the status insecurity of this time of life.
Men and women work the same number of hours a week, but men spend more time on paid work, and women ... Men and women work the same number of hours a week, but men spend more time on paid work, and women ...
Increased amounts of "screen time" are contributing to decreased amounts of physical ... Increased amounts of "screen time" are contributing to decreased amounts of physical ...
When viewed from the Earth, Venus subtends an angle of about 1 arcminute (1/60°) when it is at ... When viewed from the Earth, Venus subtends an angle of about 1 arcminute (1/60°) when it is at ...
Video: Blood Pressure Measurement

For a complete list of videos, visit our video library