(a) Why is Krumbein’s logarithmic transformation necessary? Grain size data are not normally distributed but are skewed. Krumbein introduced the phi (φ) scale to convert grain size into a logarithmic form. φ = −log₂ (grain diameter in mm). This transformation simplifies statistical analysis of sediments. It helps in easy comparison of grain size parameters like mean, sorting, skewness, and kurtosis.
(b) How are sediments transported by rivers?
Sediments are transported by rivers in four
Processes of Formation of Sedimentary Rocks
Sedimentary rocks are formed by a series of interrelated processes operating at or near the Earth’s surface. These processes can be broadly divided into five main stages:
1. Weathering
Weathering is the breakdown of pre-existing rocks at the Earth’s surface by physical, chemical, and biological processes.
Physical weathering disintegrates rocks without changing composition.
Chemical weathering alters minerals through reactions such as oxidation, hydration,
distillation:-Distillation is a process by which a liquid mixture is separated into fractions with higher concentrations of certain components by exploiting differences in relative volatility Distillation is a separation process used to separate components of a liquid mixture based on differences in their boiling points. The process involves heating the mixture to vaporize the most volatile component(s), followed by cooling the vapor to condense it back into liquid form, thereby isolating the different
1. What is Reynold's number? Give its importance. Reynold's number is a dimensionless number used to predict flow patterns in fluid dynamics. It is the ratio of inertial forces to viscous forces. A low Reynold's number indicates laminar flow, while a high number indicates turbulent flow. It helps in designing and analyzing fluid flow systems.
2. What are heat exchangers? Give their types. Heat exchangers are devices used to transfer heat between two or more fluids without mixing them. Types include
*Anti-arrhythmic drugs*
Anti-arrhythmic drugs are medications used to treat abnormal heart rhythms (arrhythmias). They work by modifying the electrical activity of the heart.
Classification:
1. Class I: Sodium channel blockers
(e.g., Quinidine, Lidocaine)
2. Class II: Beta blockers (e.g., Propranolol)
3. Class III: Potassium channel blockers (e.g., Amiodarone)
4. Class IV: Calcium channel blockers (e.g., Verapamil)
*Anticoagulants*
Anticoagulants are drugs that prevent blood clotting.
- Warfarin:
...NSAIDs (Non-Steroidal Anti-Inflammatory Drugs) are a class of meds that reduce inflammation, pain, and fever. They're like the ultimate pain relief squad.
*Classification:*
- *Non-selective COX inhibitors*:
- Aspirin: -Ibuprofen -Diclofenac -Naproxen
- *COX-2 selective inhibitors*:
- Celecoxib-Etoricoxib
*Pharmacology of Aspirin:*
- *Mechanism*: Aspirin irreversibly inhibits COX-1 and COX-2 enzymes, reducing prostaglandin synthesis, which leads to decreased pain, inflammation, and fever...
Provinces: BC, AB, SK, MB, ON, QC, NB, NS, PEI, NL
Territories: YT, NT, NU
Capital of Canada: Ottawa
ON – Toronto
QC – Québec City
BC – Victoria
AB – Edmonton
MB – Winnipeg
SK – Regina
NS – Halifax
NB – Fredericton
PEI – Charlottetown
NL – St. John’s
Atlantic, Pacific, Arctic Oceans
Hudson Bay
Great Lakes (Huron, Ontario, Michigan, Erie, Superior)
St. Lawrence River
Gulf of St. Lawrence
Oldest Geological Era: Precambrian
ACE-LEVEL MANAGING ORGANIZATIONS CHEAT SHEET (Lessons 01–08 + Case 01 + Case 02 + Student Pres 01–12) || MANAGEMENT + OB BASICS: Management = achieving organizational goals through other people/resources; must balance EFFECTIVENESS (reaching the right goals/outcomes) + EFFICIENCY (using time/money/effort well); 4 FUNCTIONS (POLC): Planning = set goals + choose actions; Organizing = design structure + allocate tasks/resources; Leading = motivate/communicate/influence; Controlling = measure results...
Chapter 1 – Atomic Structure & Matter
Atomic models: Dalton (solid sphere), Thomson (plum pudding, cathode ray), Rutherford (gold foil → nucleus), Bohr (planetary energy levels), Modern (wave mechanical/electron cloud)
Subatomic particles:
Proton: +1 charge, ~1 amu, nucleus
Neutron: 0 charge, ~1 amu, nucleus
Electron: −1 charge, ~0 amu, electron cloud
Isotopes: same element, different number of neutrons
Electron arrangement: ground state (lowest energy), excited state (