Water molecules were surely part of the dusty swirl that coalesced into the Sun and its planets beginning about nine billion years after the Big Bang. But Earth's early history, including epochs with high ambient temperatures and no enveloping atmosphere, implies that surface water would have evaporated and drifted back into space. The water we encounter today, it seems, must have been delivered long after Earth formed. Faced with this conundrum, astronomers realized that there are two ready-made sources: comets and asteroids, the solar system 's gravel strewn among planetary boulders. The primary difference between the two is that comets typically have a greater concentration of ingredients that vaporize when heated, accounting for their iconic gaseous tails. Both comets and asteroids can contain ice. And if, by colliding with Earth, they added the amount of material some scientists suspect, such bodies could easily have delivered oceans' worth of water. Accordingly, each has been fingered as a suspect in the mystery.
Water molecules were surely part of the dusty swirl that coalesced into the Sun and its planets beginning about nine billion years after the Big Bang. But Earth's early history, including epochs with high ambient temperatures and no enveloping atmosphere, implies that surface water would have evaporated and drifted back into space. The water we encounter today, it seems, must have been delivered long after Earth formed. Faced with this conundrum, astronomers realized that there are two ready-made sources: comets and asteroids, the solar system 's gravel strewn among planetary boulders. The primary difference between the two is that comets typically have a greater concentration of ingredients that vaporize when heated, accounting for their iconic gaseous tails. Both comets and asteroids can contain ice. And if, by colliding with Earth, they added the amount of material some scientists suspect, such bodies could easily have delivered oceans' worth of water. Accordingly, each has been fingered as a suspect in the mystery.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
Related questions
Concept explainers
Question
Transcribed Image Text:K Andrea Ortiz - Physical Educatio X
K Andrea Ortiz - CA English 9A Tie x
e Science) Credit 1 x
K Andrea Ortiz- CA Biology A Cred x
i web.kamihq.com/web/viewer.html?state=%7B*ids"%3A%5B"11yaeuPNI2yHX4sK5fSJdFFxwekqScJtV"%5D%2C*from"%3A"classroomop..
В У
100%
Edu I
A LE-Maybees
Andrea Ortiz - CA Biology A Credit 1 FF.pdf
CA Rev. 12/4/19
Water molecules were surely part of the dusty swirl that coalesced into the Sun and its planets beginning
about nine billion years after the Big Bang. But Earth's early history, including epochs with high ambient
temperatures and no enveloping atmosphere, implies that surface water would have evaporated and drifted
back into space. The water we encounter today, it seems, must have been delivered long after Earth formed.
Faced with this conundrum, astronomers realized that there are two ready-made sources: comets and
asteroids, the solar system 's gravel strewn among planetary boulders. The primary difference between the
two is that comets typically have a greater concentration of ingredients that vaporize when heated,
accounting for their iconic gaseous tails. Both comets and asteroids can contain ice. And if, by colliding with
Earth, they added the amount of material some scientists suspect, such bodies could easily have delivered
oceans' worth of water. Accordingly, each has been fingered as a suspect in the mystery.
Greene, Brian. "How Did Water Come to Earth?" Smithsonian.com. Smithsonian Magazine, May 2013. Web. 25 Feb. 2015.
3. According to the second article, where did Earth's water come from?
4. What evidence does this article give to support the author's claim?
5. After reading both articles, where do you think Earth's water came from? Use evidence from the
articles to support your reasoning.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:
9780815344322
Author:
Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:
W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:
9781260159363
Author:
Martin, Terry R., Prentice-craver, Cynthia
Publisher:
McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:
9781260231700
Author:
Sylvia S. Mader, Michael Windelspecht
Publisher:
McGraw Hill Education