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

Author Question: Describe the basic processes and timeline that led to the formation of Earth and its ocean and ... (Read 72 times)

vicky

  • Hero Member
  • *****
  • Posts: 586
on: Aug 22, 2018
Describe the basic processes and timeline that led to the formation of Earth and its ocean and atmosphere.

Question 2

Residence times are dependent upon steady-state conditions and a well-mixed ocean.
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jackie

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Aug 22, 2018
Answer to Question 1

Earth formed about 4.6 billion years ago through the accretion of particles orbiting in our solar system. Earth was initially molten and layers only formed once planet began to cool. Density stratification allowed the least dense elements to escape to Earth's surface and atmosphere, while the denser elements sunk to form the internal layers of Earth, the mantle and core. The ocean and the atmosphere formed together as the planet cooled sometime between 4.4 and 3.8 billion years ago. The ocean formed as water vapor trapped in Earth's outer layers escaped to the surface via volcanic activity, a process called outgassing. This vapor cooled and condensed to form an ocean.

Answer to Question 2

True


vicky

  • Member
  • Posts: 586
Reply 2 on: Aug 22, 2018
Wow, this really help

shailee

  • Member
  • Posts: 392
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Structure and basic function of a typical vertebrate neuron and associated glial cells. Structure and basic function of a typical vertebrate neuron and associated glial cells.
Reactions 1 through 4 are necessary for the formation of each peptide bond. Reactions 1 through 4 are necessary for the formation of each peptide bond.
Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ... Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ...
Earth’s orientation Earth’s orientation
Geothermal energy and powers Earth’s systems Geothermal energy and powers Earth’s systems
Gene-transfer processes in bacteria Gene-transfer processes in bacteria
Video: Rena arc construction

For a complete list of videos, visit our video library