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 89 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
Excellent

bassamabas

  • Member
  • Posts: 294
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Territory sizes differ among animals. Territory sizes differ among animals.
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.
Scientists (group photo) Scientists (group photo)
Humid Continental (Dfa, Dfb, Dwa, Dwb) Humid Continental (Dfa, Dfb, Dwa, Dwb)
Creating a Continental Economy Creating a Continental Economy
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: Major Elements in Biological Molecules: Carbohydrates

For a complete list of videos, visit our video library