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 73 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
Great answer, keep it coming :)

anyusername12131

  • Member
  • Posts: 327
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

Your heart beats over 36 million times a year.

Scientists (group photo) Scientists (group photo)
The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha
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 ...
Humid Continental Climates with Severe Winters (D) Humid Continental Climates with Severe Winters (D)
Scientists should use a variety of media to present the message Scientists should use a variety of media to present the message
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: Neural regulation of blood pressure - baroreceptor and chemoreceptor reflexes

For a complete list of videos, visit our video library