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

Author Question: What evidence from volcanic rocks indicates that Earth was much hotter in the past? What will be ... (Read 49 times)

LCritchfi

  • Hero Member
  • *****
  • Posts: 519
on: Jul 16, 2018
What evidence from volcanic rocks indicates that Earth was much hotter in the past?
 
  What will be an ideal response?

Question 2

Write a short paragraph in which you use the analogies of a bottle of salad dressing and hand clapping to explain planetary differentiation to a friend or family member who is unfamiliar with the concept.
 
  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

Sierray

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 16, 2018
Answer to Question 1

Ultramafic lava flows require mantle temperatures several hundred degrees hotter than our estimates of the present day mantle temperatures. These ultramafic lava flows are all greater than 3 billion years old.

Answer to Question 2

A bottle of salad dressing contains oil and vinegar, which do not mix unless they are shaken together. Over time, the oil and vinegar separate, with the denser vinegar on the bottom. This is analogous to how molten metal would separate from molten silicate.


LCritchfi

  • Member
  • Posts: 519
Reply 2 on: Jul 16, 2018
Gracias!

aliotak

  • Member
  • Posts: 326
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

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

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?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

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.
The declining age of menarche over the past 150 years has been measured in many European countries, The declining age of menarche over the past 150 years has been measured in many European countries,
How Orbital Eccentricity Changes the Amount of Solar Radiation Earth Receives How Orbital Eccentricity Changes the Amount of Solar Radiation Earth Receives
Earth-Sun Relationships Earth-Sun Relationships
Detrital Sedimentary Rocks Detrital Sedimentary Rocks
Visible evidence of mosaic tissues in a human female Visible evidence of mosaic tissues in a human female
Video: Electrical Conduction System of the Heart

For a complete list of videos, visit our video library