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Erth101 Exam 2 Questions With Correct Answers

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  • Module
  • ERTH 101
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  • ERTH 101

©BRAINBARTER EXAM SOLUTIONS 2024/2025 ALL RIGHTS RESERVED. 1 | P a g e Erth101 Exam 2 Questions With Correct Answers Scientists who study the geologic record of global climate change infer that accelerated weathering resulting from uplift of the Himalayan range and Tibetan Plateau is causing...

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  • December 2, 2024
  • 16
  • 2024/2025
  • Exam (elaborations)
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  • ERTH 101
  • ERTH 101
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©BRAINBARTER EXAM SOLUTIONS 2024/2025

ALL RIGHTS RESERVED.




Erth101 Exam 2 Questions With Correct
Answers

Scientists who study the geologic record of global climate change infer that accelerated

weathering resulting from uplift of the Himalayan range and Tibetan Plateau is causing a global

decrease in atmospheric carbon dioxide that is, in turn, cooling the atmosphere over millions of

years. - answer✔true


When overlying pressure is released by tectonic forces or by erosion, it causes rock to break.

This pressure release leads to - answer✔joints


What percentage of Earth's atmosphere is carbon dioxide? - answer✔0.2%


The variables that most affect the weathering process are rock composition and -

answer✔climate


What is the most important weathering process from the standpoint of reducing carbon dioxide

levels - answer✔hydrolysis of continental silicate minerals


Clays are phyllosilicates, meaning their crystalline structure consist of layers of _______

organized in sheets - answer✔silica tetrahedra


What is the building of mountain ranges by continental collision called - answer✔orogenesis



1|Page

, ©BRAINBARTER EXAM SOLUTIONS 2024/2025

ALL RIGHTS RESERVED.
Which minerals formed at high temperatures and pressures, are the first to crystallize in a

cooling magma chamber, and among the least stable on Earth's surface, where the

environment differs most from their environment of crystallization - answer✔Mafic and

Ultramafic


Because of negligible rainfall, little organic matter, and low biological activity, arid climate soils

are composed of all of the following, except - answer✔humus


Which of the following is a reddish soil that is an important source of aluminum -

answer✔bauxite


Most chemical weathering is the result of water interacting with minerals in a rock -

answer✔true


Carbon dioxide increases the acidity of water to create ______, which is an effective chemical

weathering agent that causes hydrolysis, dissolution, and oxidation - answer✔carbonic acid


What is the most common chemical weathering process? - answer✔hydrolisis


How do burrowing organisms aid in the biological weathering process - answer✔They produce

carbon dioxide.


They overturn and mix soil particles.


They increase porosity.


They increase soil moisture content.



2|Page

, ©BRAINBARTER EXAM SOLUTIONS 2024/2025

ALL RIGHTS RESERVED.
All of these are aided by burrowing organisms in the weathering process.


What mineral does hydrolysis break down to make clay - answer✔feldspar


Why are members of the clay mineral group abundant in soils and sedimentary rocks -

answer✔they are the last to break down chemically at Earth's surface


Chemical weathering is the chemical decomposition of minerals in rock. This process may result

in the formation of the following, except: - answer✔new igneous minerals


What are the important biological weathering processes? - answer✔movement and mixing of

materials


simple breaking of particles


production of carbon dioxide by animal respiration or organic decay


changes in moisture content of soils


all of the above


Rocks with unusual shapes and "fluted" or flat faces may have been abraded by wind-blown

sediment. Such rocks are called: - answer✔ventifacts


Physical weathering: - answer✔increases the surface area of rocks


increases a rock's vulnerability to chemical deterioration


changes the appearance of Earth's surface



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