Author Question: What was the source(s) of the heat that made the early Earth much hotter than it is today? What ... (Read 126 times)

asan beg

  • Hero Member
  • *****
  • Posts: 570
What was the source(s) of the heat that made the early Earth much hotter than it is today?
 
  What will be an ideal response?

Question 2

What is the process of planetary differentiation? How did this process determine the composition of Earth?
 
  What will be an ideal response?



BUTTHOL369

  • Sr. Member
  • ****
  • Posts: 341
Answer to Question 1

Collisional heating and radioactive decay (including short-lived types).

Answer to Question 2

Earth began as a magma ocean, and it chemically differentiated into the core of iron- seeking elements, and the mantle, composed of lighter elements. Differentiation is the result of density variations, causing denser metals to sink and form the core while less dense silicates made up the mantle.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

For a complete list of videos, visit our video library