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 24 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
Great answer, keep it coming :)

connor417

  • Member
  • Posts: 329
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

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?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Past and current ranges of the grizzly bear. Past and current ranges of the grizzly bear.
Evidence of Water on Mars Evidence of Water on Mars
Common skin signs are often evidence of an illness or disorder. A wheal is a localized, evanescent ... Common skin signs are often evidence of an illness or disorder. A wheal is a localized, evanescent ...
A spaceship leaves Earth at a steady forward speed of 70% the speed of light. How fast relative ... A spaceship leaves Earth at a steady forward speed of 70% the speed of light. How fast relative ...
Evidence of lethal mutations in plants Evidence of lethal mutations in plants
Earth day kids Earth day kids
Video: The life cycle of protein

For a complete list of videos, visit our video library