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The Day the Mesozoic Died Worksheet - Introduction to Biological Anthropology, Exercises of Geology

Wilson CollegeGeology

12 questions which are all about the Mesozoic era, where many species was present which are extinct now.

Typology: Exercises

2020/2021

Uploaded on 04/20/2021

prindhorn
prindhorn 🇺🇸

4.6

(11)

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ANTHR&1&–&Intro&to&Biological&Anthropology& & Name:_________________________________________&
Spring&2016&&&&&&&Due&on&3/16/16&& & 10&points&
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The&Day&the&Mesozoic&Died&–&Video&Response&(12&questions)&
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1.&&What&is&the&”K-T&boundary”?&
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&
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2.&&The&Paleozoic&is&known&as&“The&Age&of&the________________________”;&the&Mesozoic&is&known&as&“The&Age&of&
the___________________________”;&and&the&Cenozoic&is&known&as&the&“Age&of&the&
________________________.”&
&
3.&&Describe&the&differences&scientists&saw&in&the&foraminifera&found&in&rock&layers&above&(after)&and&below&
(before)&the&K-T&boundary.&
&
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4.&&What&role&did&Physics&(and&Astrophysics&in&particular)&play&in&uncovering&the&mysterious&K-T&event?&
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5.&&Which&of&the&following&events&are&possible&sources&of&high&levels&of&iridium&in&sediments?&&Write&‘Yes’&or&‘No’&
next&to&each&of&the&four&possibilities.&&There&may&be&more&than&one&‘yes’&response.&
&
&An&asteroid&impact&&&&&______&
&Rain&&&______&
&Fossilized&foraminifera& ______&
&A&supernova& & ______&
&
6.&&Which&of&the&following&pieces&of&evidence&prompted&researchers&to&abandon&the&hypothesis&that&a&supernova&
caused&high&levels&of&iridium&in&the&K-T&layer?&&Select&one&response.&
&
a.&&Coarse&sediment&mixed&with&uniform&Cretaceous&mud&in&Texas&
b.&&Differences&in&foraminifera&fossils&above&and&below&the&K-T&boundary&layer\&
c.&&High&levels&of&iridium&in&the&K-T&boundary&layer&
d.&&Lack&of&an&isotope&of&plutonium&in&the&K-T&boundary&layer&
&
7.&Explain&why&the&scientific&community&was&slow&to&accept&the&asteroid&impact&hypothesis.&
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Download The Day the Mesozoic Died Worksheet - Introduction to Biological Anthropology and more Exercises Geology in PDF only on Docsity!

ANTHR 1 – Intro to Biological Anthropology Name:_________________________________________ Spring 2016 Due on 3/16/16 10 points

The Day the Mesozoic Died – Video Response (12 questions)

  1. What is the ”K-T boundary”?
  2. The Paleozoic is known as “The Age of the________________________”; the Mesozoic is known as “The Age of the___________________________”; and the Cenozoic is known as the “Age of the ________________________.”
  3. Describe the differences scientists saw in the foraminifera found in rock layers above (after) and below (before) the K-T boundary.
  4. What role did Physics (and Astrophysics in particular) play in uncovering the mysterious K-T event?
  5. Which of the following events are possible sources of high levels of iridium in sediments? Write ‘Yes’ or ‘No’ next to each of the four possibilities. There may be more than one ‘yes’ response. An asteroid impact ______ Rain ______ Fossilized foraminifera ______ A supernova ______
  6. Which of the following pieces of evidence prompted researchers to abandon the hypothesis that a supernova caused high levels of iridium in the K-T layer? Select one response. a. Coarse sediment mixed with uniform Cretaceous mud in Texas b. Differences in foraminifera fossils above and below the K-T boundary layer
    c. High levels of iridium in the K-T boundary layer d. Lack of an isotope of plutonium in the K-T boundary layer
  7. Explain why the scientific community was slow to accept the asteroid impact hypothesis.
  1. Many different pieces of evidence lead to the formation of the asteroid hypothesis and provided support for the hypothesis, including: a. Finding tsunami deposits in the Brazos River Basin, Texas. b. Determining that rocks taken from the Chicxulub crater are the same age as the K-T boundary. c. Discovering gravitational field anomalies on the Yucatan peninsula, from surveys done for oil exploration. d. Finding high levels of iridium in the K-T boundary layer. e. Identifying spherules and shocked quartz in Haiti. f. Finding that an isotope of plutonium is NOT in the K-T boundary layer. g. Observing differences in foraminifera fossils above and below the K-T boundary layer. Which piece of evidence (from a – g above) lead scientists to conclude that the cause of the K-T boundary layer was extraterrestrial in nature?__________ Which piece of evidence (from a – g above) lead scientists to dismiss the supernova hypothesis? __________ What was the critical piece of evidence (from a – g above) that supported the hypothesis that an asteroid had struck the Earth 66 million years ago?_________
  2. How could an asteroid impact kill off so many different species? Select ONE response. a. Debris from the impact orbiting around the Earth shields sunlight, halting photosynthesis. b. Tsunamis, landslides, and earthquakes caused by the impact killed organisms near the site of impact. c. The impact was so extreme that life at ground zero was vaporized. d. Both A and C are possible. e. A, B, and C are possible.
  3. Why do we define the K-T event as a mass extinction event? Write ‘Yes’ or ‘No’ next to each of the five possibilities. There may be more than one ‘Yes’ response. Many species of foraminifera went extinct ______ A large proportion of species went extinct ______ The extinction occurred in many habitats around the world ______ Tyrannosaur rex went extinct ______ Many life forms near Gubbio, Italy were obliterated ______