Connect with LearnSmart for Krauskopf: The Physical Universe, 16e
16th Edition
ISBN: 9781259663895
Author: KRAUSKOPF, Konrad B.
Publisher: Mcgraw-hill Higher Education (us)
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Question
Chapter 15, Problem 46E
To determine
The source of energy that makes the erosion of landscapes possible.
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Consider the situation in the figure below; a neutral conducting ball hangs from the ceiling by an insulating string, and a charged insulating rod is going to be placed nearby.
A. First, if the rod was not there, what statement best describes the charge distribution of the ball?
1) Since it is a conductor, all the charges are on the outside of the ball. 2) The ball is neutral, so it has no positive or negative charges anywhere. 3) The positive and negative charges are separated from each other, but we don't know what direction the ball is polarized. 4) The positive and negative charges are evenly distributed everywhere in the ball.
B. Now, when the rod is moved close to the ball, what happens to the charges on the ball?
1) There is a separation of charges in the ball; the side closer to the rod becomes positively charged, and the opposite side becomes negatively charged. 2) Negative charge is drawn from the ground (via the string), so the ball acquires a net negative charge. 3)…
answer question 5-9
Chapter 15 Solutions
Connect with LearnSmart for Krauskopf: The Physical Universe, 16e
Ch. 15 - The most abundant element in the earths crust is...Ch. 15 - The second most abundant element is a. iron b....Ch. 15 - Minerals are a. silicon compounds b. common types...Ch. 15 - The tendency of certain minerals to split along...Ch. 15 - Feldspar is a. relatively rare in the earths crust...Ch. 15 - Quartz is a. a variety of feldspar b. a variety of...Ch. 15 - A mineral that is not a silicate is a. quartz b....Ch. 15 - The ferromagnesian minerals are usually a....Ch. 15 - Igneous rocks have been formed by a. cooling from...Ch. 15 - Rocks that have been altered by heat and pressure...
Ch. 15 - Most crustal rocks a. were formed from compacted...Ch. 15 - A general characteristic of rocks of volcanic...Ch. 15 - Foliation occurs in a. sedimentary rocks b....Ch. 15 - An example of a foliated rock is a. marble b....Ch. 15 - An example of a light-colored, coarse-grained...Ch. 15 - Limestone may be metamorphosed into a. marble b....Ch. 15 - Shale may be metamorphosed into a. marble b....Ch. 15 - Mica is present in a. marble b. chert c. basalt d....Ch. 15 - Fossils are most likely to be found in a. granite...Ch. 15 - Most earthquakes are caused by shifts of rocks...Ch. 15 - Regions in which earthquakes are frequent are also...Ch. 15 - Relative to an earthquake of magnitude 5 on the...Ch. 15 - Which one or more of the following statements...Ch. 15 - The earths crust a. has very nearly the same...Ch. 15 - The part of the earth with the greatest volume is...Ch. 15 - The radius of the earths core is roughly a. 110...Ch. 15 - The rocks of the mantle are believed to consist...Ch. 15 - Among the reasons why the earths core is believed...Ch. 15 - The chief source of the energy that powers...Ch. 15 - The earths magnetic field a. never changes b. has...Ch. 15 - If we travel around the earth, we would find that...Ch. 15 - A rock readily attacked by chemical weathering is...Ch. 15 - The principal agent of erosion is a. groundwater...Ch. 15 - Which of the following is not produced by rivers?...Ch. 15 - Glaciers produce which one or more of the...Ch. 15 - The last stage in the erosion of a river is the...Ch. 15 - Prob. 37MCCh. 15 - A fairly fast valley glacier might have a speed of...Ch. 15 - Most of the groundwater present in soil and...Ch. 15 - An aquifer is a. a river or stream on the surface...Ch. 15 - The largest amounts of sediment are deposited a....Ch. 15 - Minerals deposited by groundwater in rock fissures...Ch. 15 - Most caves are produced by the solvent action of...Ch. 15 - The chief constituent of volcanic gases is a....Ch. 15 - Prob. 45MCCh. 15 - The most common volcanic rock is a. granite b....Ch. 15 - Prob. 47MCCh. 15 - Active volcanoes are not found a. in the West...Ch. 15 - A batholith is a a. fissure from which groundwater...Ch. 15 - Arrange these elements in decreasing order of...Ch. 15 - Do silicon compounds make up less than a quarter,...Ch. 15 - What is the relationship between rocks and...Ch. 15 - What mineral is most abundant in the earths crust?...Ch. 15 - Both cleavage and crystal form are characteristic...Ch. 15 - Graphite consists of layers of carbon atoms in...Ch. 15 - In the silicate minerals each Si4+ ion is always...Ch. 15 - How could you distinguish calcite crystals from...Ch. 15 - Are the mineral grains in an igneous rock usually...Ch. 15 - Granite and rhyolite have similar compositions,...Ch. 15 - Diorite is an igneous rock that has hardened...Ch. 15 - Obsidian is a rock that resembles glass, in...Ch. 15 - In what way does calcite differ from almost all...Ch. 15 - Of what rock do coral reefs consist?Ch. 15 - What is the nature of chert and why is it so...Ch. 15 - What kind of rocks are most abundant in the earths...Ch. 15 - What happens to the density of a rock that...Ch. 15 - Why is gneiss the most abundant metamorphic rock?Ch. 15 - The mineral grains of many metamorphic rocks are...Ch. 15 - Shale is a sedimentary rock that consolidated from...Ch. 15 - (a) What is the origin of limestone? (b) What rock...Ch. 15 - Distinguish between the foliation of a metamorphic...Ch. 15 - Distinguish between quartz and quartzite.Ch. 15 - How could you distinguish (a) chert from obsidian;...Ch. 15 - How could you distinguish (a) granite from gabbro;...Ch. 15 - Name the following rocks: (a) a rock consisting of...Ch. 15 - Name the following rocks: (a) a fine-grained,...Ch. 15 - Prob. 28ECh. 15 - Each step on the Richter scale of earthquake...Ch. 15 - What can be said about an earthquake whose...Ch. 15 - Why is the mantle thought to be solid?Ch. 15 - (a) Distinguish between earthquake P and S waves....Ch. 15 - In what part of the earth does the rock motion...Ch. 15 - An earthquake occurs far from an observing station...Ch. 15 - How does the radius of the earths core compare...Ch. 15 - Where is the earths crust thinnest? Where is it...Ch. 15 - What evidence is there in favor of the idea that...Ch. 15 - What is the source of the energy that powers most...Ch. 15 - (a) Why is it believed that the earths outer core...Ch. 15 - Why does a compass needle in most places not point...Ch. 15 - Why is it unlikely that the earths magnetic field...Ch. 15 - Prob. 42ECh. 15 - Why are igneous and metamorphic rocks in general...Ch. 15 - Both marble and slate are metamorphic rocks. Would...Ch. 15 - In what way is the weathering of rock important to...Ch. 15 - Prob. 46ECh. 15 - Is there a limit to the depth to which streams can...Ch. 15 - Why are streams and rivers so effective as agents...Ch. 15 - Under what circumstances does a glacier form?Ch. 15 - Which is the more important agent of erosion...Ch. 15 - Prob. 51ECh. 15 - How is it possible for glaciers to wear down rocks...Ch. 15 - What is a water table? An aquifer?Ch. 15 - What is the immediate destination of most of the...Ch. 15 - What is the eventual site of deposition of most...Ch. 15 - Distinguish between an alluvial fan and a moraine.Ch. 15 - Why are clay minerals and quartz particles...Ch. 15 - In sand derived from the attack of waves on...Ch. 15 - What is the probable origin of the following...Ch. 15 - What characteristic landscape features do active...Ch. 15 - Prob. 61ECh. 15 - What factors determine the viscosity of a magma?...Ch. 15 - What is the cause of the holes found in many...Ch. 15 - Prob. 64ECh. 15 - (a) Why are metamorphic rocks often found near...Ch. 15 - Distinguish between a dike and a vein.
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