Astronomy
1st Edition
ISBN: 9781938168284
Author: Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: OpenStax
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 8, Problem 27E
What is the volume of new oceanic basalt added to Earth’s crust each year? Assume that the thickness of the new crust is 5 km, that there are 60,000 km of rifts, and that the average speed of plate motion is 4 cm/y. What fraction of Earth’s entire volume does this annual addition of new material represent?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
HEIGHT OF A CONTINENT ABOVE THE MANTLE. In the figure below, a
simple model considers a continent as a block (density = 2,800 kg/m^3)
floating in the mantle (density = 3,300 kg/m3). Assuming the continent is
35 km thick (the average thickness of the Earth's crust), estimate the
height (in km) of the continent above the surrounding mantle.
Continent
(density = 2800 kg/m3)
mg
Mantle rock (density = 3300 kg/m³)
5.3.
7.4.
9.8
12.
17.
The Hawaiian Islands have formed as the Pacific Plate moves northwestward over a hot spot of Earth’s interior that provides magma to form several volcanos. Explain what could happen if the Pacific Plate continues to move.
Explain how plate tectonics cause earth tremors,volcanoes and Tsunamis.
Chapter 8 Solutions
Astronomy
Ch. 8 - What is the thickest interior layer of Earth? The...Ch. 8 - What are Earth’s core and mantle made of? Explain...Ch. 8 - Describe the differences among primitive, igneous,...Ch. 8 - Explain briefly how the following phenomena happen...Ch. 8 - What is the source of Earth’s magnetic field?Ch. 8 - Why is the shape of the magnetosphere not...Ch. 8 - Although he did not present a mechanism, what were...Ch. 8 - List the possible interactions between Earth’s...Ch. 8 - List, in order of decreasing altitude, the...Ch. 8 - In which atmospheric layer are almost all...
Ch. 8 - What is, by far, the most abundant component of...Ch. 8 - In which domain of living things do you find...Ch. 8 - Describe three ways in which the presence of life...Ch. 8 - Briefly describe the greenhouse effect.Ch. 8 - How do impacts by comets and asteroids influence...Ch. 8 - Why are there so many impact craters on our...Ch. 8 - Detail some of the anthropogenic changes to...Ch. 8 - If you wanted to live where the chances of a...Ch. 8 - Which type of object would likely cause more...Ch. 8 - If all life were destroyed on Earth by a large...Ch. 8 - Why is a decrease in Earth’s ozone harmful to...Ch. 8 - Why are we concerned about the increases in CO2...Ch. 8 - Do you think scientists should make plans to...Ch. 8 - Europe and North America are moving apart by about...Ch. 8 - Over the entire Earth, there are 60,000 km of...Ch. 8 - With the information from Exercise 8.25, you can...Ch. 8 - What is the volume of new oceanic basalt added to...Ch. 8 - Suppose a major impact that produces a mass...Ch. 8 - How do the risks of dying from the impact of an...Ch. 8 - What fraction of Earth’s volume is taken up by the...Ch. 8 - Approximately what percentage of Earth’s radius is...Ch. 8 - What is the drift rate of the Pacific plate over...Ch. 8 - What is the percent increase of atmospheric CO2 in...Ch. 8 - Estimate the mass of the object that formed Meteor...
Additional Science Textbook Solutions
Find more solutions based on key concepts
37. (I) A force of 35.0 N is required to start a 6.0-kg box moving across a horizontal concrete floor. (a) What...
Physics: Principles with Applications
A ball rebounds elastically from the floor. What doesthis situation share with the ideas of momentum conservati...
Modern Physics
Q31.14 A circuit consists of a light bulb, a capacitor, and an inductor connected in series to an ac source. Wh...
University Physics (14th Edition)
The location of the fifth charge q .
Physics (5th Edition)
36. A kicker punts a football from the very center of the field to the sideline 43 yards downfield. What is the...
College Physics: A Strategic Approach (3rd Edition)
11. A block oscillating on a spring has period t = 2.0 s.
a. What is the period if the block's mass is doubled?...
College Physics: A Strategic Approach (4th Edition)
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
- On what crustal plate is Los Angeles located, and in which direction is the plate moving?arrow_forwardOver the entire Earth, there are 60,000 km of active rift zones, with average separation rates of 5 m/ century. How much area of new ocean crust is created each year over the entire planet? (This area is approximately equal to the amount of ocean crust that is subducted since the total area of the oceans remains about the same.)arrow_forwardExplain briefly how the following phenomena happen on Earth, relating your answers to the theory of plate tectonics A. earthquakes B. continental drift C. mountain building D. volcanic eruptions E. creation of the Hawaiian island chainarrow_forward
- 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 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_forwardAccording to the infographic above, one of the largest earthquakes of this year 2021 was the magnitude 8.2 Earthquake in Alaska on 29 July 2021. Earthquakes represent a release of energy as a result of the earth's tectonic plates. a) Determine the amount of energy release in ergs. b) Determine the energy release in Joules. ( Hint use the earthquake formula M = 2/3 log (E/ 10^11.8); where M is the earthquake magnitude and E is the energy of the earthquake in ergs (recall 1 erg = 10^-7 Joules)). c) Using the earthquake magnitude scale below to qualitatively categorize (was it Minor, Light, Moderate, Strong, Major or Great) and describe the earthquake (what kind of damage is expected from a magnitude 7.1 earthquake)arrow_forward
- A chain of undersea volcanoes has a length of 7,400 km today and the first volcano formed 53 million years ago. How fast is the plate moving each year? (Enter your answer in cm/yr.)arrow_forwardAn earthquake occurs 6,875 km from a seismograph. The P-waves arrive 11.6 minutes later. How fast is the P-wave traveling (in km/s)? If the lag time between P- and S-waves is 10.8 minutes, how fast are the S-waves traveling (in km/s)? Using the shadow of S-waves you determine that the radius of the core is 55% of the Earth's 6,378-km radius. How many kilometers from the surface is this (in km)? To calculate how fast the P-waves are traveling, we need to divide the distance the waves travel by the time. vP = d s vP = km/sarrow_forwardAntarctica is roughly semicircular in shape, with a radius of 2000 km. The average thickness of the ice cover is 3000 m. How many metric tons (1metric ton = 1000 kg) of ice cover Antarctica? (Consider: density of ice = 0.919 gram per cubic centimeter)arrow_forward
- What is a boundary layer? What causes a boundary layer to develop?arrow_forwardPlate Plate. Fil out the information for a Mid-Ocean Ridge. Boundary type: v and Type of plate: How it's formed: 4. 5arrow_forwardWhat is remanent magnetism? How can it be used to track the movement of continents over time?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
AstronomyPhysicsISBN:9781938168284Author:Andrew Fraknoi; David Morrison; Sidney C. WolffPublisher:OpenStax
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
Astronomy
Physics
ISBN:9781938168284
Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: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
Kepler's Three Laws Explained; Author: PhysicsHigh;https://www.youtube.com/watch?v=kyR6EO_RMKE;License: Standard YouTube License, CC-BY