Physical Universe
16th Edition
ISBN: 9780077862619
Author: KRAUSKOPF, Konrad B. (konrad Bates), Beiser, Arthur
Publisher: Mcgraw-hill Education,
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 16, Problem 55E
The same reptiles were present on all continents during the Mesozoic Era, but the mammals of the Cenozoic Era were often different on different continents. Why?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Suppose you are hiking in the mountains of Utah and find a fossil of an animal that lived on the ocean floor. You learn the rock that holds the fossils is from the Mississippi period. What was the environment like during the Mississippian in Utah?
If the Atlantic seafloor is spreading at 2.9 cm/year and is now 6,350 km wide, how long ago (in years) were the continents in contact?
.......yr
How does that time span compare to the age of Earth? (Enter your answer as a fraction of Earth's age.)
You want to use radiometric dating to determine the age of a specimen. You use Isotope Z, which has a half-life of 645 years. You measure your sample and find that 1/16 of the original amount of Isotope Z is present. How old is the sample?
Chapter 16 Solutions
Physical Universe
Ch. 16 - A crack in the earths crust along which movement...Ch. 16 - A long, narrow bay with an irregular outline, such...Ch. 16 - The rugged character of mountain landscapes is...Ch. 16 - The ancient supercontinents Laurasia and Gondwana...Ch. 16 - A mountain range that was not once part of the...Ch. 16 - North America, Greenland, and most of Eurasia once...Ch. 16 - The shell of rigid rock that makes up the earths...Ch. 16 - Compared with the earths crust under the oceans,...Ch. 16 - Compared with the continents, the ocean floors are...Ch. 16 - The ocean floor near a midocean ridge a. has the...
Ch. 16 - According to the hypothesis of seafloor spreading,...Ch. 16 - The number of large plates into which the...Ch. 16 - In the course of 100 years, a lithospheric plate...Ch. 16 - A region where an edge of a lithospheric plate...Ch. 16 - Most volcanoes are found a. where continental...Ch. 16 - The Indian subcontinent a. was always part of Asia...Ch. 16 - Iceland was once a. a coral reef b. magma that...Ch. 16 - The San Andreas Fault in California is the result...Ch. 16 - If the processes of plate tectonics were to stop...Ch. 16 - The theory of evolution is supported by which one...Ch. 16 - An uneven surface on which a horizontal upper bed...Ch. 16 - Prob. 22MCCh. 16 - Prob. 23MCCh. 16 - Fossils are least likely to be found in a....Ch. 16 - Conditions for the preservation of fossils are...Ch. 16 - The division of geologic time into eras and...Ch. 16 - The earth was formed a. in 4004 B.C. b. about 2...Ch. 16 - Prob. 28MCCh. 16 - Precambrian rocks are a. never found b. extremely...Ch. 16 - Living things have been present on the earth a....Ch. 16 - The oxygen in the atmosphere a. was present since...Ch. 16 - Ancient geologic processes as revealed in...Ch. 16 - Coal is composed of a. petrified wood b. buried...Ch. 16 - A bed of coal usually implies that the region was...Ch. 16 - Prob. 35MCCh. 16 - Amphibians, fishes, and marine invertebrates were...Ch. 16 - The dinosaurs were which one or more of the...Ch. 16 - Dinosaurs were abundant in the a. Cenozoic b....Ch. 16 - Prob. 39MCCh. 16 - The leading explanation for the disappearance of...Ch. 16 - The ancestors of the birds were a. reptiles b....Ch. 16 - During the Cenozoic Era a. Laurasia and Gondwana...Ch. 16 - Pangaea broke up into Laurasia and Gondwana, which...Ch. 16 - The line of descent of humans broke away from that...Ch. 16 - The Cenozoic Era represents a period a. of almost...Ch. 16 - During the most recent ice age a. there was a...Ch. 16 - What landscape features are associated with...Ch. 16 - List all the evidence you can for each of the...Ch. 16 - What geologic process is chiefly responsible for...Ch. 16 - Deposits of igneous rocks are found intruded in...Ch. 16 - Why is it believed that the region where the Rocky...Ch. 16 - What kind of biological evidence supports the...Ch. 16 - The eastern coast of South America is a good fit...Ch. 16 - (a) Where was the Tethys Sea located? (b) Are...Ch. 16 - Which of todays continents were once part of...Ch. 16 - Which is denser, the granitic rock of the...Ch. 16 - (a) What is the difference between the earths...Ch. 16 - North America, Greenland, and Eurasia fit quite...Ch. 16 - How do the ages of the ocean floors compare with...Ch. 16 - When continental drift was proposed almost a...Ch. 16 - The energy source of erosional processes is the...Ch. 16 - Where do subduction zones occur? What happens at...Ch. 16 - The Himalayas are the highest mountain range on...Ch. 16 - How does the origin of the Himalayas differ from...Ch. 16 - Which are younger, the Rocky Mountains or the...Ch. 16 - Is the Atlantic Ocean becoming narrower or wider?...Ch. 16 - The San Andreas Fault in California is a...Ch. 16 - In what geological zones are most volcanoes found?Ch. 16 - Which plate collisions are responsible for...Ch. 16 - The distance between the continental shelves of...Ch. 16 - The oldest sediments found on the floor of the...Ch. 16 - In Fig. 16-47, beds A to F consist of sedimentary...Ch. 16 - (a) What is an unconformity? (b) If one is shown...Ch. 16 - What is a fault? If one is shown in Fig. 16-47,...Ch. 16 - What is the basis of the radiocarbon dating...Ch. 16 - The half-life of rubidium-87 is 47 billion years,...Ch. 16 - The half-life of potassium-40 is 1.3 billion...Ch. 16 - Why are fossils still useful in dating rock...Ch. 16 - List as many different kinds of fossils as you...Ch. 16 - Why are most fossils found in beds that were once...Ch. 16 - What is the basis for the division of geologic...Ch. 16 - What is the basis for the division of geologic...Ch. 16 - What is the oldest division of geologic time? In...Ch. 16 - During what divisions of geologic time have living...Ch. 16 - The earths history is sometimes divided into two...Ch. 16 - The early atmosphere of the earth probably...Ch. 16 - Precambrian rocks include sedimentary, igneous,...Ch. 16 - Precambrian rocks are exposed over a large part of...Ch. 16 - What conspicuous difference is there between...Ch. 16 - What are the chief kinds of organisms that have...Ch. 16 - Paleozoic sedimentary rocks derived from marine...Ch. 16 - Which of the following are found in Paleozoic rock...Ch. 16 - Why is it believed that large parts of the United...Ch. 16 - Under what circumstances is coal formed?Ch. 16 - What is believed to be the origin of petroleum? Of...Ch. 16 - What are some of the chief differences between...Ch. 16 - What kind of animals were the dinosaurs? Were they...Ch. 16 - What is believed to be the reason or reasons for...Ch. 16 - From what type of animal did birds evolve? Are...Ch. 16 - About 200 million years ago todays continents were...Ch. 16 - The same reptiles were present on all continents...Ch. 16 - In rocks of what era or eras would you expect to...Ch. 16 - What were the ice ages? When did they occur?Ch. 16 - The Scandinavian landmass of Norway and Sweden has...Ch. 16 - Minnesota has a great many shallow lakes. How do...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- How do fossils aid in oil exploration?arrow_forwardUsing the same dating method (U235 and Pb207), the amount of Pb207 found in layer H is 75% and the amount of U235 found in layer I is 50%. For at least how many million years had the layer H been exposed on the surface to receive weathering and erosion before layer I started to form?arrow_forwardBased on the text, explain why in the year 1,600, extinction of flora and fauna is only 50 species per century, while at present extinction is 1 species per hour.arrow_forward
- Which of the following is least reasonable regarding the extinction of the dinosaurs? Group of answer choices Scientists originally believed that the Chicxulub crater was caused by a nuclear blast since the impact residue (e.g., melted bedrock, tektites, shocked quartz, etc.) discovered there was very similar to that found around nuclear test sites. According to a well-established hypothesis, a meteor the size of a mountain slammed into Earth about 65 million years ago, filling the atmosphere with gas, dust, and debris that drastically altered the climate. One key piece of evidence is a very high level of iridium in a layer of Earth, with lots of dinosaur fossils below but none above. A huge impact crater linked to the impact event was found around coast of Mexico’s Yucatán Peninsula. Although the impact occurred in the Gulf of Mexico, meteorite debris from the 'dinosaur rock' was discovered all over the world.arrow_forwardThe two stars indicate two different areas - Island 1 and Island 2 - with different levels of intensity (y-axis) and frequency (x-axis) of disturbances. High Low Low High Frequency Island 1 is predicted to experience and island 2 should experience Select one: a. extinction of life; primary succession b. secondary succession; secondary succession c. secondary succession; primary succession d. primary succession; secondary succession e. primary succession; primary succession Intensityarrow_forwardThe Lithosphere is made of the two types of crust, denser oceanic crust and thicker conteniental crust, plus the upper rigid part of the mantle. The Lithosphere float on the semi-liquid Asthenosphere. The Asthenosphere moves through a process known as convection. The convection form currents moving hotter less dense mantle toward the surface where it cools becomes denser and sinks. Another name for the asthenosphere is the ?arrow_forward
- The diagram below shows the layers of rock having an ammonite: Which statement about the rock fossils is true? (4 points) a Fossil Y is older than fossil X. b Fossil Z is younger than fossil Y. c Fossil Z existed over many periods of time. d Fossil Y existed during the same period as the ammonite.arrow_forwardOceanic crust Lithosphere Asthenosphere Oceanic-continental convergence Fill in the information below for a Deep Ocean Trench. Boundary type: Type of Plates: v and How is it formed? 21 Trench Volcanicarrow_forwardIf a tectonic plate is moving at 8.4 cm per year and a string of volcanoes appearing in the middle of the plate is 4,000 km long, how old is the oldest volcano (in millions of years)?arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
An Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage Learning
Foundations of Astronomy (MindTap Course List)PhysicsISBN:9781337399920Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
Stars and Galaxies (MindTap Course List)PhysicsISBN:9781337399944Author:Michael A. SeedsPublisher:Cengage Learning
AstronomyPhysicsISBN:9781938168284Author:Andrew Fraknoi; David Morrison; Sidney C. WolffPublisher:OpenStax
An Introduction to Physical Science
Physics
ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:Cengage Learning
Foundations of Astronomy (MindTap Course List)
Physics
ISBN:9781337399920
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning
Stars and Galaxies (MindTap Course List)
Physics
ISBN:9781337399944
Author:Michael A. Seeds
Publisher:Cengage Learning
Astronomy
Physics
ISBN:9781938168284
Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher:OpenStax
A Level Physics – Ideal Gas Equation; Author: Atomi;https://www.youtube.com/watch?v=k0EFrmah7h0;License: Standard YouTube License, CC-BY