GEOG 1301

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School

Del Mar College *

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1303

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Geology

Date

Jun 24, 2024

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docx

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Uploaded by alexisreyna2012

Which of the following are the four basic layers of the Earth? Select all that apply. Correct! Inner Core Correct! Mantle The continents Correct! Outer core Correct! Crust Asthenosphere Lithosphere Question 2 1 / 1 pts Which of the following is the best example of chemical weathering? Jointing Correct! An oxidation reaction between iron in a rock and water Ice expanding in cracks of rock and breaking them apart

Collision of a cold front with a warm front to produce acid rain Exfoliation domes formed from sheeting Question 3 0.33 / 1 pts Which of the following criteria define glacial ice? Select all that apply. Correct Answer Overlies land Correct! Must be perennial Must melt completely away every season Correct! Mass is sufficient to flow You Answered Must be an Ice berg Question 4 1 / 1 pts Which of the following rock units would probably make the best aquifer? Slate Marble

Shale Correct! Sandstone Question 5 0.5 / 1 pts Which of the following are the four most abundant elements in the whole Earth? Aluminum Correct! Oxygen Correct Answer Magnesium You Answered Hydrogen Correct! Iron Carbon Correct! Silicon Question 6

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0 / 1 pts What is the difference between glacial till deposits and glacial outwash? Correct Answer Till is poorly sorted outwash is well sorted Till is predominantly mafic in composition Till is mostly carbonate and outwash is mostly silicate You Answered Till is deposited by meltwaters and outwash by ice. Question 7 0 / 1 pts How do we know the state-of-matter of the core? From lunar meteorites. You Answered From analysis of samples of the core brought to Earth’s surface Correct Answer From analysis of seismic waves generated by earthquakes From chemical analysis of deep mantle plumes From satellite imagery and radar data Question 8 1 / 1 pts

Which of the following pictures shows a silicate molecule? Write down the correct number in the space below. Correct! 1 (with margin: 0) Question 9 0.2 / 1 pts Please select the five criteria for defining a mineral. Correct Answer Solid Correct! Formed by a geologic process Correct Answer Crystalline structure Correct! Naturally occuring Non-metal You Answered

Is a combination of one or more elements Correct! Has a definite chemical formula Has an economic use You Answered Organic Question 10 0 / 1 pts Glacial drift consisting of well-sorted gravel deposited by melt water is called what? You Answered Glacial till Firn Arete Correct Answer Glacial outwash Cirque Question 11 1 / 1 pts How many meters are in 35 cm? Correct!

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0.35 (with margin: 0) Question 12 1 / 1 pts Which of the following is the best definition of a glacier? Correct! A large, flowing mass of ice on land that does not melt entirely away seasonally Ice that forms in the polar regions Any land ice Permafrost that forms in the poles Ice bergs and sea ice that resist seasonal melting Question 13 1 / 1 pts Which of the following hypotheses is not falsifiable and therefore, impossible to study with science? Correct! There are undetectable, invisible fairies There are such things as black swans There are Greek Gods living on Mt. Olymupus There are aliens on the Moon

Question 14 1 / 1 pts How old is the Earth in billions of years (as calculated from radiometric dating)? Please give your answer with one decimal point digit, for example 2.7 or 3.2. Correct! 4.5 (with margin: 0.1) Question 15 1 / 1 pts Igneous rocks form by Precipitation from a saturated brine Correct! Cooling and crystallizing from a melt Solid-state deformation under high pressure Deposition of sediment Erosion, compaction, diagenesis Question 16 0.5 / 1 pts Be careful with this question: which of the following are common rock- forming silicate minerals? Select all that apply. Ice Gold

Hematite Correct! Feldspar Correct Answer Amphibole Question 17 1 / 1 pts What is the most common class of minerals in the crust and mantle? Oxides Correct! Silicates Carbonates Clay minerals Sulfides Question 18 1 / 1 pts Which of the following is the most abundant element in the core? Nickel

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Feldspar Correct! Iron Gold Silicon It's solid Chocolate all the way down Question 19 1 / 1 pts Match the 2 definitions with their proper terms. Correct! Positively charged ions Cations Correct! Negatively charged ions anions Other Incorrect Match Options:  Alkaline  Alkali  Noble ion Question 20 0 / 1 pts Which of the following are sedimentary rocks? Select all that apply. Correct Answer Coquina

Correct! Breccia Andesite You Answered Feldspar Correct Answer Shale How many milligrams are in 42 grams? You Answered 42,000 (with margin: 0 Match the definition with the proper bonding term. Correct! A bond that involves near-complete transfer of electrons Ionic Correct! A bond that involves sharing of valence electrons Covalent Match the different sedimentary rocks with their type. Rock Salt Chemical Limestone Biochemical Sandstone Clastic Coal Organic

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GEOG 1301

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