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EOSC 315 Final Exam Questions and Answers 100% Verified What 2 things control phytoplankton variability - Answer- 1. sunlight 2. nutrient availability (macro and micro) when are phytoplankton considered light limited - Answer- when they cannot increase their total biomass and support high levels of productivity What are 2 issues with light in the ocean for organisms - Answer- 1. water absorbs and reflects light (less light intensity) 2. organisms inconsistent position within the mixe...

EOSC 315 EXAM QUESTIONS WITH ALL CORRECT ANSWERS What are diatoms and what are they composed of? - Answer- Eukaryotic phytoplankton and almost exclusively photosynthetic organisms. -Composed of a cell wall made of silica. Where can diatoms be found? - Answer- In both marine and fresh water environments. Where are diatoms most common? - Answer- Near the coast, especially in temperate areas where necessary nutrients needed for growth are high. Thrive in cooler areas. What do diatoms co...

EOSC 210 Final Test Questions with Correct Answers what are some types of concrete dams - Answer- gravity, arch, buttress, concrete-face (hybrid) what are some pros to concrete dams - Answer- rigid offer more resistance to water erosion, overtopping and piping failure can be shaped to support imposed loads, reduce tensile stresses and minimize concrete usage (thin arch dams) what are some cons to concrete dams - Answer- concrete is relatively expensive somewhat more labor intensive...

EOSC 210 Midterm 2 Exam Questions with 100% Correct Answers What are glacial-fluvial sediments? - Answer- - mostly sand and gravel w/ moderate sorting and bedding - commonly non-cohesive and highly permeable - good bearing capacity and low settlement - the best sources of groundwater in the Vancouver area are glacial-fluvial sediemts (tills are much weaker) What are glacial-lacustrine sediments? - Answer- - generally have more silt and clays - lower bearing capacity and higher settle...

EOSC 210 Midterm 1 Exam Questions and Answers All Correct 100% Verified What is Walther's Law? - Answer- - a vertical sequence of facies reflects lateral changes in depositional environment - when a depositional environment (sedimentary environment) migrates sedimatents lie on top of other sedimnets What is marine trangression? - Answer- - sea level rises relative to land surface - depositional environment migrate toward land - marine sediments (shales and limestones) deposited on top...

EOSC 210 EXAM QUESTIONS WITH 100% CORRECT ANSWERS UPDATED 2024/2025 How does pore pressure effect LS - Answer- high pore pressure adversely affects stability of slope because there is a decrease in effective stress What are triggers for a LS - Answer- rainfall, snowmelt, volcano, EQ, etc. What does a LS trigger do - Answer- initiates failure What does precipitation do in a LS - Answer- increases pore water pressure, so less effective stress, and causes LS What are types of LS mitig...

EOSC 210 MT1 EXAM QUESTIONS WITH REVISED ANSWERS ALL CORRECT List 4 ways a mineral can form - Answer- 1. cooling and crystallization of magma 2. Precipitation from liquid 3. Chemical changes from heat or press. 4. Precipitation from life How are minerals grouped? - Answer- Based off their anion. If 3 different minerals have the following anion, place all in the correct group: 1. O 2. S 3. F, Cl or Br - Answer- 1. Oxide 2. Sulphides 3. Halides If 4 different minerals have the ...

EOSC 210 Midterm Exam Questions and Correct Answers Already Passed What is a mineral - Answer- Naturally occurring inorganic solid with a crystalline structure (lattices) and consistent chemical composition (varies only within defined limits) Physical appearance reflects crystalline structure How do minerals form? - Answer- -Cooling/crystallization of magma -Precipitation from fluids (eg. evaporated lake) -Chemical changes from heat and pressure changes -Biomineralization How can we i...

EOSC 210 Final Test Questions with 100% Correct Answers What measures can be taken to prevent landslides? - Answer- landslide types like debris flows and rockfall can't be prevented and therefore the strategy is to accept they will happen at some unknown time in the future and protect homes and infrastructure against them with barriers or containment slope stability analysis: what is factor of safety? - Answer- it represents the ratio of the forces resisting failure to the forces drivi...

EOSC 210 Midterm 1 Exam Questions with All Correct Answers 2024/2025 Latest Update What are the main sedimentary rock types? - Answer- 1. Clastic - clasts are fragments or particles of weathered and eroded rocks (eg. sandstone) 2. Chemical (evaporites) - formed through precipitation (eg. halite, gypsum) 3. Organic (eg. chalk, limestones, coal) How are clastic sedimentary rocks transported? - Answer- 1. transported as suspended load with dissolved load (ions) and bed load 2. as they get...