exam2_review

exam2_review - Exam 2 Review ATOC 1060 Exam 2 Friday Mar 23...

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Exam 2 Review ATOC 1060 Exam 2: Friday, Mar 23 3:00-3:50pm Duane Physics G1B20
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2 Content Unit 2: The Chemical and Biological Climate System • Lecture 12 -> Lecture 21 • up to and including El Nino • Chapters 8, 9 • Quizzes 4, 5, 6 • Learning group discussions 4, 5, 6
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3 Rules allowed items • pencil • eraser items NOT allowed • calculator • sheet of equations • computer • textbook • notes • cell phones
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4 What should I bring? • #2 pencil • good eraser • student ID number
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5 Test format 33 multiple choice questions [3 points each] Fill in the corresponding bubble on the scan-tron sheet
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6 Concept review - Lecture 12 • Atoms contain protons, neutrons, and electrons • Chemical elements have atomic mass [periodic table] • Molecules are 2+ atoms held together by bonds • Chemical reactions are expressed with chemical equations • The most abundant gases in the atmosphere are N 2 , O 2 , Ar, and CO 2 ; only CO 2 is a greenhouse gas • The total pressure ( concentration ) of the atmosphere is the sum of the partial pressures of each individual gas p CO 2 has a seasonal cycle and a multi-decadal increase [Figure: slide 16] • Steady state means the concentration of the gas/chemical is constant with time; input balances output • Non-steady state means the concentration of the gas/ chemical changes with time; input and output are imbalanced
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7 Concept review - Lecture 13 • The most abundant elements in the ocean are Cl - , Na + , SO 4 2- , Mg, and HCO 3 - ; concentration is expressed as mass of chemical per volume of H 2 O • Residence time is the average length of time a substance spends in a given reservoir • Under the assumption of steady state, residence time is proportional to chemical concentration [qualitative relation] • If chemical residence time is longer than the mixing time of the ocean, the chemical will be well-mixed • Chemical concentration in the ocean is controlled by both physical (vertical exchange) and biological (photosynthesis) processes • Certain ocean chemicals are not in steady state: their
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exam2_review - Exam 2 Review ATOC 1060 Exam 2 Friday Mar 23...

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