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

Author Question: True or False: Earth exhibits a gradual inward transition from low-density to high-density rock. ... (Read 55 times)

nelaaney

  • Hero Member
  • *****
  • Posts: 560
on: Jul 16, 2018
True or False: Earth exhibits a gradual inward transition from low-density to high-density rock.
 
  Indicate whether this statement is true or false.

Question 2

How did the hydrosphere and atmosphere form?
 
  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

mk6555

  • Sr. Member
  • ****
  • Posts: 310
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: FALSE

Answer to Question 2

Answer: Two contrasting hypotheses explain the origin of Earth's atmosphere and hydrosphere. One hypothesis suggests delivery of water-rich materials from meteorites and comets that accreted to the initially dry Earth very late in the formation of the planet. The other hypothesis suggests that Earth accreted wet, from planetesimals or embryos already containing water-bearing minerals. Water vapor is the most abundant gas erupted from volcanoes. This observation is consistent with the hypothesis that the hydrosphere derived from melting water-bearing mantle minerals and erupting water vapor through volcanoes. Atmosphere composition changed through Earth history as a result of weathering reactions and the presence of photosynthetic organisms, which consume carbon dioxide and create oxygen.


nelaaney

  • Member
  • Posts: 560
Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

mammy1697

  • Member
  • Posts: 341
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Mira as seen from the Earth Mira as seen from the Earth
The Sun as it appears from the surface of the Earth at Sunset. The Sun as it appears from the surface of the Earth at Sunset.
True Forget-Me-Not True Forget-Me-Not
The Tilt of Earth’s Axis The Tilt of Earth’s Axis
Pelvic rock. Place your right hand over the recipient’s left hip bone. Place your left hand over ... Pelvic rock. Place your right hand over the recipient’s left hip bone. Place your left hand over ...
The human X chromosome (left) and the Y chromosome (right). This false-color scanning electron micro The human X chromosome (left) and the Y chromosome (right). This false-color scanning electron micro
Video: Pressure Flow Model Animation

For a complete list of videos, visit our video library