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

Author Question: What caused Earth to partially melt when being formed? a. Impact of asteroids, comets, and debris ... (Read 42 times)

cdr_15

  • Hero Member
  • *****
  • Posts: 546
on: Aug 22, 2018

What caused Earth to partially melt when being formed?
  a. Impact of asteroids, comets, and debris
  b. Gravitational compression
  c. Accumulation of decaying radioactive elements
  d. A combination of all of these choices



Question 2

What key characteristic marks the beginning stages of the collapse of a star?
  a. The increase in temperature
  b. The depletion of carbon and oxygen
  c. The depletion of hydrogen
  d. The expulsion of energy



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fatboyy09

  • Sr. Member
  • ****
  • Posts: 358
Reply #1 on: Aug 22, 2018
Answer to Question 1

ANS: D
Asteroids, comets, and debris heated the surface of Earth. Combined with gravitational compression
and decaying radioactive elements, this caused Earth to partially melt. Information can be found in the
section Earth, Ocean, and Atmosphere Accumulated in Layers Sorted by Density



Answer to Question 2

ANS: C
The lack of hydrogen in a star marks its death. The rapid compression of the core then causes the
internal temperature to increase. In turn, this allows for the formation of heavy metal atoms.
Information can be found in the section Stars and Seas



cdr_15

  • Hero Member
  • *****
  • Posts: 546
Reply #2 on: Aug 22, 2018
Both answers were spot on, thank you once again


fatboyy09

  • Sr. Member
  • ****
  • Posts: 358
Reply #3 on: Aug 22, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Synthesis of the active hormone formed from vitamin D or its precursor in skin. Synthesis of the active hormone formed from vitamin D or its precursor in skin.
Eastern skunk cabbage, an endothermic plant, can melt its way up through spring snow cover Eastern skunk cabbage, an endothermic plant, can melt its way up through spring snow cover
Collision Between Two Asteroids Collision Between Two Asteroids
Structures formed by phospholipids in an aqueous environment: Micelle Structures formed by phospholipids in an aqueous environment: Micelle
Abnormalities Caused by Cardiac Pathology Abnormalities Caused by Cardiac Pathology
Layers of Earth Layers of Earth
Video: Rods and Cones Animation

For a complete list of videos, visit our video library