UNDERSTANDING THE UNIVERSE(LL)-W/CODE
3rd Edition
ISBN: 9780393869903
Author: PALEN
Publisher: NORTON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 18, Problem 11QAP
To determine
The meaning of Cambrian explosion.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
réptilés
d. all) of these
7. The development of ozóne in the stratosphere and oxygen in the atmosphere first
made possible the development of
a. complex organisms
b. single-cell organisms
c. cyanobacteria
d. all of these
8. Today, many scientists think that
a. 'birds evolved from dinosaurs
b. dinosaurs evolved from reptiles
c. birds evolved from amphibians
d. both a andb
9. Ediacaran organisms first appeared during the
a. Precambrian Time
b. Cambrian Period
c. Permian Period
d. none of these
10. As
a. cyanobacteria
b. trilobites
evolved, they changed Earth's atmosphere by producing oxygen.
c. reptiles
d. dinosaurs
Geologic Time
1. What is relative dating?
2. What is the law of superposition?
3. What is the law of original horizontally?
Approximately how old is a fossil that contains 1.5g of C14 and 198.5g of C12? Remember that C14 decays to C12 with a half life of 6,000 years.
Chapter 18 Solutions
UNDERSTANDING THE UNIVERSE(LL)-W/CODE
Ch. 18.1 - Prob. 18.1CYUCh. 18.2 - Prob. 18.2CYUCh. 18.3 - Prob. 18.3CYUCh. 18.4 - Prob. 18.4CYUCh. 18 - Prob. 1QAPCh. 18 - Prob. 2QAPCh. 18 - Prob. 3QAPCh. 18 - Prob. 4QAPCh. 18 - Prob. 5QAPCh. 18 - Prob. 6QAP
Ch. 18 - Prob. 7QAPCh. 18 - Prob. 8QAPCh. 18 - Prob. 9QAPCh. 18 - Prob. 10QAPCh. 18 - Prob. 11QAPCh. 18 - Prob. 12QAPCh. 18 - Prob. 13QAPCh. 18 - Prob. 14QAPCh. 18 - Prob. 15QAPCh. 18 - Prob. 16QAPCh. 18 - Prob. 17QAPCh. 18 - Prob. 18QAPCh. 18 - Prob. 19QAPCh. 18 - Prob. 20QAPCh. 18 - Prob. 21QAPCh. 18 - Prob. 22QAPCh. 18 - Prob. 23QAPCh. 18 - Prob. 24QAPCh. 18 - Prob. 25QAPCh. 18 - Prob. 26QAPCh. 18 - Prob. 27QAPCh. 18 - Prob. 28QAPCh. 18 - Prob. 29QAPCh. 18 - Prob. 30QAPCh. 18 - Prob. 31QAPCh. 18 - Prob. 32QAPCh. 18 - Prob. 33QAPCh. 18 - Prob. 34QAPCh. 18 - Prob. 35QAPCh. 18 - Prob. 36QAPCh. 18 - Prob. 37QAPCh. 18 - Prob. 38QAPCh. 18 - Prob. 41QAPCh. 18 - Prob. 42QAPCh. 18 - Prob. 43QAPCh. 18 - Prob. 44QAPCh. 18 - Prob. 45QAP
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
- From Hawaii to the bend in the Hawaiian-Emperor chain is about 4000 km. Use the speed of Pacific plate motion given in Problem 7 to estimate how long ago the direction of plate motion changed. (Note: It may not be a coincidence that the San Andreas fault became active in what is now Southern California at about the same time.) 7. The Hawaiian-Emperor chain of undersea volcanoes is about 7500 km long, and the Pacific plate is moving 9.2 cm a year. How old is the oldest detectable volcano in the chain? What has happened to older volcanoes in the chain?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_forwardWhich of the following is most responsible for the formation of new crust ar the edge of a tectonic plate? A. mountain building at a continent-continent convergent boundary B. magma rising up from the mantle at a divergent boundary С. two tectonic plates sliding past one another at a transform boundary D. subduction of one oceanic plate under another at a convergent boundaryarrow_forward
- 7. For a reflection seismic survey, where the subsurface has an average P-wave velocity of 1000m/s and we use a 10ms seismic wavelet, the best resolution we could obtain is? а. 1 m b. 2.5 m с. 5m d. 10 m 8. Seismic migration can be best described as a. Converting the seismic section from time to depth b. Adjusting the reflection time based on the hyperbolic travel time c. Stacking the traces d. Putting seismic reflectors in their correct location 9. In a seismic survey, an air wave can be best described as a. A wave that travels through the air b. A compression wave that travels through the air in the pore spaces in the rock. c. A direct, compression wave that travels from the source to the geophones through the air. d. All of the above 10. A seismic survey is conducted in a region with two layers. The top layer is shale, with density 2500 kg/m3, and seismic velocity of 2900m/s, and the bottom layer is sandstone, with a density of 2100 kg/m3, and a seismic velocity of 3000m/s. The…arrow_forwardOn July 13, 1986, the strongest earthquake known to strike San Diego County registered 5.4 on the Richter scale. It was centered off the coast of Oceanside on the Coronado Bank Fault. a) Determine the amount of energy released in ergs and b) Joules.arrow_forwardYou 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?arrow_forward
- 5. The diplodocus dinosaur is believed to have become extinct approximately 1.38x10° years ago. The oviraptor is believed to have become extinct approximately 7x10' years ago. How many years were there between the extinction of these two dinosaur types?arrow_forwardWhich of the following is the most related to plate tectonics activity? a climate b. volcanos and earthquakes c. wind and ocean currents d. glaciers and blizzardsarrow_forwardReview. The North American and European plates of the Earths crust are drifting apart with a relative speed of about 25 mm/yr. Take the speed as constant and find when the rift between them started to open, to reach a current width of 2.9 103 mi.arrow_forward
- 5. The "iceberg analogy" for the isostatic equilibrium of the continental crust turns out to be quite the relative density of icebergs versus seawater is close to the relative density of continental crust versus mantle. Glacial ice is about 15% less dense than seawater; likewise continental crust is about 15% less dense than the mantle. This leads to a simple rule that we can call the 1-to-8 rule: for every 1 unit of extra elevation for an iceberg or a mountain belt, there need to be 8 units of total thickness. These iceberg examples illustrate the idea: an iceberg 3 meters above sea level is 24 meters thick an iceberg 1 meter above sea level is 8 meters thick an iceberg 2 meters above sea level is 16 meters thick 3m 2m water level 1m >7m 14m 21m For the following questions, apply the 1-to-8 rule, assuming continental crust in isostatic equilibrium. a. Continental crust at sea level averages about 35 kilometers thick. (1 km = 0.6 miles.) Therefore, in general, how thick must the crust…arrow_forwardSuppose earthquake A registers two more points on the Richter scale than earthquake B. a. How are their corresponding intensities related? b. How are their released energies related? a. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. A = IB + O B. A = Oc. 'A ='B O D. IA = lB -arrow_forward1. The article states that Tasmanian devils “remov[e] carcasses that might otherwise slowly rot." Which of the following ScienceWorld Name: CHECK FOR UNDERSTANDING: RETURN OF THE DEVINS DIRECTIONS: Use the article "Return of the Devils" (p. 20) to answer the questions hello phrases best defines carcasses? A decaying plants B fallen trees bodies of dead animals O nonnative predators d the dramatic decline of the devil population on the island of Tasmania in the past feN darrow_forward
arrow_back_ios
SEE MORE QUESTIONS
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
Horizons: Exploring the Universe (MindTap Course ...PhysicsISBN:9781305960961Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
Foundations of Astronomy (MindTap Course List)PhysicsISBN:9781337399920Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
An Introduction to Physical Science
Physics
ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:Cengage Learning
Horizons: Exploring the Universe (MindTap Course ...
Physics
ISBN:9781305960961
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning
Foundations of Astronomy (MindTap Course List)
Physics
ISBN:9781337399920
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
A Level Physics – Ideal Gas Equation; Author: Atomi;https://www.youtube.com/watch?v=k0EFrmah7h0;License: Standard YouTube License, CC-BY