« previous next »

Author Question: The major boundary that occurs at a depth of about 30 km below Earth's surface is the:a. ... (Read 49 times)

Jipu 123

  • Hero Member
  • *****
  • Posts: 569
on: Jul 15, 2018

The major boundary that occurs at a depth of about 30 km below Earth's surface is the:a.
   low-velocity zone.
  b. Moho.
  c. inner core-outer core transition.
  d. core-mantle boundary.
  e. none of the above



Question 2

The composition of the mantle is:
  a. peridotite.
  b. basalt.
  c. granite.
  d. iron.
  e. iron and nickel metal



mfedorka

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 15, 2018
Answer to Question 1

A

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

The hierarchy of biological classification's eight major taxonomic ranks. The hierarchy of biological classification's eight major taxonomic ranks.
Animation of the apparent retrograde motion of Mars in 2003 as seen from Earth Animation of the apparent retrograde motion of Mars in 2003 as seen from Earth
False-color imagery of the Sun, a G-type main-sequence star, the closest to Earth. False-color imagery of the Sun, a G-type main-sequence star, the closest to Earth.
Surface of the heart. Surface of the heart.
A rubber mallet used to deliver a force to an object without harming the surface. A rubber mallet used to deliver a force to an object without harming the surface.
Comparison of the two major forms of DNA Comparison of the two major forms of DNA
Video: Hip Animation

For a complete list of videos, visit our video library