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

Author Question: How do oceanic and continental crusts differ? How do scientists know that they are different? ... (Read 86 times)

imowrer

  • Hero Member
  • *****
  • Posts: 514
on: Jul 16, 2018
How do oceanic and continental crusts differ? How do scientists know that they are different?
 
  What will be an ideal response?

Question 2

How do we get samples of rocks from the crust that formed deeper than 5 kilometers below Earth's surface?
 
  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

vickyvicksss

  • Sr. Member
  • ****
  • Posts: 351
Reply #1 on: Jul 16, 2018
Answer to Question 1

There is a variation in composition and density, and thickness. Drilling into the sea floor and continental crust, and detection of ophiolites, where oceanic crust is accreted to continental material, provide opportunities to study the crust directly. Seismic reflection and refraction allow them to image the lithosphere.

Answer to Question 2

Drill-hole data, surface of outcrops of rocks that formed at depth but are now exposed on Earth's surface and rocks brought up from depth within volcanic rocks.


imowrer

  • Member
  • Posts: 514
Reply 2 on: Jul 16, 2018
Gracias!

raili21

  • Member
  • Posts: 324
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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).

Oceanic circulation, which is driven mainly by the prevailing winds, moderates earth's climate. Oceanic circulation, which is driven mainly by the prevailing winds, moderates earth's climate.
Oceanic Crust Has a Well-defined Internal Structure Oceanic Crust Has a Well-defined Internal Structure
When the IQ scores of identical twins differ, behavior genetics researchers attribute these to ... When the IQ scores of identical twins differ, behavior genetics researchers attribute these to ...
Oceanic-Continental Convergence Oceanic-Continental Convergence
In 1964 a team of Russian scientists smashed a neon nucleus into a plutonium tar In 1964 a team of Russian scientists smashed a neon nucleus into a plutonium tar
Video: Hormonal feedback loop components & Glucagon (glycogenolysis and gluconeogenesis)

For a complete list of videos, visit our video library