
Physical Universe
16th Edition
ISBN: 9780077862619
Author: KRAUSKOPF, Konrad B. (konrad Bates), Beiser, Arthur
Publisher: Mcgraw-hill Education,
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Chapter 16, Problem 35MC
To determine
The oldest land vertebrates.
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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...
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- In the following figure the circuit to the left has a switch thatat t = 0 s is switched and disconnects the battery from the circuit. The state depicted on thefigure is right after the switch, still t = 0. As the current decreases over time, the magneticflux through the circuit on the right (due to the long cable of the circuit on the left) changesand induces an EMF on the right circuit. How much power is consumed by R2 as a functionof time.The distance between the wire on the left and the closest wire on the right is r = 2.0 cm.The size of the circuit on the right is noted on the figure.arrow_forwardsingly A samply ionized helium atom is in the ground state. It absorbs energy and makes a transition to the n=7 excited state. The ion returns to wo the wavelength the ground state by emitting SIX photons ONLY. What is the of the second highest energy photon ?arrow_forwardAn electron, traveling at a speed of 5.60x10° m/s, strikes the target of an X-ray tube. Upon impart, the eletion decelerates to one-third of it's original speed, with an X-ray photon being emitted in the process. What is the wavelength of the photon? m.arrow_forward
- Can you help me solve this 2 question and teach me what we use to solve thisarrow_forwardYou are working during the summer at a company that builds theme parks. The company is designing an electromagnetic propulsion system for a new roller coaster. A model of a substructure of the device appears in the figure below. Two parallel, horizontal rails extend from left to right, with one rail behind the other. A cylindrical rod rests on top of and perpendicular to the rails at their left ends. The distance between the rails is d and the length of the rails is L. The magnetic field vector B points vertically down, perpendicular to the rails. Within the rod, the current I flows out of the page, from the rail in the back toward the rail in the front. The rod is of length d = 1.00 m and mass m = 0.700 kg. The rod carries a current I = 100 A in the direction shown and rolls along the rails of length L = 20.0 m without slipping. The entire system of rod and rails is immersed in a uniform downward-directed magnetic field with magnitude B = 2.30 T. The electromagnetic force on the rod…arrow_forwardBased on the graph, explain how centripetal force is affected when the hanging mass changes. Does your graph verify the relationship in the equation r = x^i + y^j = r cos ωt I + r sin ωt^j?arrow_forward
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