EAS Hard Exam Questions with Correct Answers

EAS Hard Exam Questions with Correct Answers 2. Which of the following minerals is most likely to form a clay mineral during weathering? A) iron pyroxene (Fe2Si2O6) B) calcite (CaCO3) C) quartz (SiO2) D) feldspar (KAlSi3O8) - Answer-D 5. One of the most effective mechanisms for physical weathering is __________. A) oxidation B) hydration C) frost wedging D) hydrolysis - Answer-C 7. In what type of rock do most caves form? A) granite B) sandstone C) limestone D) shale - Answer-C 8. Chemicalstabilityis A) similar to hardness. B) a measure of a substance's tendency to remain chemically inert. C) unaffected by environment. D) a measure of a molecule's tendency to react. - Answer-B 11. Acids enhance chemical weathering. What is the most common natural acid on the Earth's surface? A) hydrochloric acid B) sulfuric acid C) carbonic acid D) nitric acid - Answer-C 12. Why A) because sand grains are typically made of quartz, which saltates more easily than clay are sand-sized particles easier to erode than clay-sized particles? particles B) because sand grains are rounder and roll more easily, whereas clay particles are flat and platy C) because clay particles are denser than sand particles, making them heavier D) because clay particles are attracted to tone another because of opposite charges, which hold them in place - Answer-D 13. Which of the following will decrease the rate of chemical weathering of a rock at the Earth's surface? A) increasing the amount of surrounding soil B) increasing the amount of acid in the rainwater C) decreasing the temperature D) breaking the rock into smaller pieces - Answer-C 21. The main difference between a hot spring and a geyser lies in the A) chemistry of the water. B) temperature of the water. C) bedrock the water flows through. D) regularity of the underground plumbing system. - Answer-D 22. On a delta, smaller rivers that branch off downstream are called a tributaries. b rivulets. c distributaries. d divides. - Answer-c 23. Which of the following combinations make for the best groundwater reservoir? A) high permeability and high porosity B) high permeability and low porosity C) low permeability and high porosity D) low permeability and low porosity - Answer-A