Physical Science (12th Edition), Standalone Book
12th Edition
ISBN: 9781260150544
Author: Bill W. Tillery
Publisher: McGraw Hill Education
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Textbook Question
Chapter 17, Problem 31AC
The common structural feature of all silicates is
a. silicon-silicon chains.
b. silicon-oxygen tetrahedral unit.
c. silicon-silicon rings.
d. silicon-oxygen chains.
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d) Suppose a mineral has three directions of cleavage (e.g., calcite). How many faces will a
crystal of the mineral have? Why?
1. How old is a rock if the mineral biotite from the rock has 85,000 40K atoms and 15.000 40Ar
atoms? Note: 40K decays to 40Ar with half-life = 1.3 billion years.
2. Isotopic analysis of a granitic intrusion indicates that 6.25 % of the original 40K is present.
Analysis of a nearby basaltic intrusion indicates that 25 % of the original amount of 40K is
present. What is the absolute age of both the granitic intrusion and the dike? What is the
relationship between them?
I.
3. Pebbles of an igneous rock are incorporated within a conglomerate. The pebbles yield a
radiometric age of 200 million years. What can you say about age of the conglomerate based
on this data?
4. A radioactive parent isotope with 600 atoms. After the decay, 450 daughter atoms were
produced. Calculate the age of the rock if you know that the half-life of the parent isotope is
20 million years.
Foliated metamorphic rocks are created by
a. Magma
b. Direct Pressure
c. Clastic Sedimentary Rocks
d. Lava Flows
Chapter 17 Solutions
Physical Science (12th Edition), Standalone Book
Ch. 17 - 1. A naturally occurring inorganic solid element...Ch. 17 - 2. A structural unit that is repeated in three...Ch. 17 - 3. Which element is the most abundant in Earth’s...Ch. 17 - 4. Minerals are classified as
a. silicates.
b....Ch. 17 - 5. The most abundant class of nonsilicates is...Ch. 17 - 6. Silicates are classified into two groups based...Ch. 17 - 7. The color of a mineral when it is finely...Ch. 17 - 8. The hardness of a mineral is rated using the
a....Ch. 17 - 9. The ratio of the mineral’s density to the...Ch. 17 -
10. Molten rock material from which minerals...
Ch. 17 -
11. An aggregation of one or more minerals that...Ch. 17 -
12. Rocks that are formed from molten minerals...Ch. 17 -
13. Igneous rock that slowly cooled deep below...Ch. 17 -
14. The rock that makes up the bulk of Earth’s...Ch. 17 -
15. The rock that makes up the ocean basins and...Ch. 17 -
16. Rocks that are formed from particles of other...Ch. 17 - 17. Accumulations of silt, sand, or other...Ch. 17 - 18. Limestone and dolomite are
a. sandstone.
b....Ch. 17 - 19. Heat and pressure change rocks into
a.igneous...Ch. 17 - 20. The relationship between rocks that are...Ch. 17 - 21. The thin layer that covers Earth’s surface is...Ch. 17 - 22. Based on its abundance in Earth's crust, most...Ch. 17 - 23. The most common rock in Earth's crust is
a....Ch. 17 - 24. An intrusive igneous rock will have which type...Ch. 17 - 25. Which igneous rock would have the greatest...Ch. 17 - 26. Which of the following formed from previously...Ch. 17 - 27. Sedimentary rocks are formed by the processes...Ch. 17 - 28. The greatest extent of metamorphic changes has...Ch. 17 - 29. Which type of rock probably existed first,...Ch. 17 - 30. Earth is unique because it has
a. CO2 in its...Ch. 17 - 31. The common structural feature of all silicates...Ch. 17 - 32. The one group that is not a subgroup of the...Ch. 17 - 33. The property that is not considered useful in...Ch. 17 - 34. The specific gravity of a mineral depends on...Ch. 17 - 35. Fluorite is a mineral that floats in liquid...Ch. 17 - 36. The group that is not a class of rocks is
a....Ch. 17 - 37. The classification of rocks is based on
a....Ch. 17 - 38. An example of a sedimentary rock is
a....Ch. 17 - 39. The term that does not describe a size of...Ch. 17 - 40. Dissolved rock materials form
a. chemical...Ch. 17 - 41. An example of a metamorphic rock is
a....Ch. 17 - 42. Extrusive igneous rocks are formed on Earth’s...Ch. 17 - 43. Foliation is found in
a. sedimentary rocks.
b....Ch. 17 - Prob. 1QFTCh. 17 - Prob. 2QFTCh. 17 - 3. Explain why each mineral has its own unique set...Ch. 17 - 4. Identify at least eight physical properties...Ch. 17 - 5. Explain how the identity of an unknown mineral...Ch. 17 - 6. What is a rock?
Ch. 17 - 7. Describe the concept of the rock cycle.
Ch. 17 - Prob. 8QFTCh. 17 - 9. Which major kind of rock, based on the way it...Ch. 17 -
10. What is the difference between magma and...Ch. 17 -
11. What is meant by the “texture" of an igneous...Ch. 17 -
12. What are the basic differences between...Ch. 17 -
13. Explain why a cooled and crystallized magma...Ch. 17 - Prob. 14QFTCh. 17 -
15. What are clastic sediments? How are they...Ch. 17 -
16. Briefly describe the rock-forming process...Ch. 17 - 17. What are metamorphic rocks? What limits the...Ch. 17 - 18. Describe what happens to the minerals as shale...Ch. 17 - Prob. 19QFTCh. 17 - 1. What are the significant similarities and...Ch. 17 - 2. Is ice a mineral? Describe reasons to support...Ch. 17 - 3. If ice is a mineral, is a glacier a rock?...Ch. 17 - Prob. 4FFACh. 17 - Prob. 1PEACh. 17 - Prob. 2PEACh. 17 - Prob. 3PEACh. 17 - Prob. 4PEACh. 17 - Prob. 5PEACh. 17 - Prob. 6PEACh. 17 - Prob. 7PEACh. 17 - Prob. 8PEACh. 17 - Prob. 9PEACh. 17 - Prob. 10PEACh. 17 - Prob. 11PEACh. 17 - Prob. 12PEACh. 17 - A granite countertop measuring 4.57 m long by 0.75...Ch. 17 - A limestone building stone measuring 40.0 cm long...Ch. 17 - Granite boulders with a minimum mass of 1.50...Ch. 17 - 1. A sample of the mineral sylvite measures 2.68...Ch. 17 - 2. A rectangular crystal of calcium plagioclase...Ch. 17 - 3. A spherical specimen of the mineral quartz...Ch. 17 - 4. Geologists separate nonferromagnesian silicates...Ch. 17 - 5. Compare the mineral halite (NaCl, hardness of...Ch. 17 - 6. Mica is a sheet silicate while quartz is a...Ch. 17 - 7. Magnesite is a magnesium ore mineral and has...Ch. 17 - 8. Magnetite and hematite are iron ore minerals....Ch. 17 - 9. An iron mine has an ore deposit estimated at...Ch. 17 - 10. An ore deposit consisting of chert and...Ch. 17 -
11. For a given igneous rock type, the proportion...Ch. 17 -
12. Based on Figure 17.13, what is the average...Ch. 17 -
13. A gabbro countertop measuring 4.70 m long by...Ch. 17 -
14. A sandstone building stone measuring 50.0 cm...Ch. 17 - Prob. 15PEB
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