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 53 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
Great answer, keep it coming :)

nyrave

  • Member
  • Posts: 344
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

The nephron. The nephron is the basic subunit of each kidney. The nephron. The nephron is the basic subunit of each kidney.
Earth’s Magnetosphere Earth’s Magnetosphere
Hints of Earth’s Early Appearance Hints of Earth’s Early Appearance
Movement of Water in the World Ocean Movement of Water in the World Ocean
Earth’s Layered Structure Earth’s Layered Structure
Polar Ocean Productivity Polar Ocean Productivity
Video: Knee Animation

For a complete list of videos, visit our video library