ELEX 4 Semiconductor Theory and Diodes

26 - Physiology of saliva. Gingival sulcus fluid - orihin, composition and functions

Earth Science, Space & Chemistry Study Guide Glaciers 1. What are the two main types of glaciers? Mountain (alpine) Continental 2. What shape is a glacier-carved valley? U-shaped 3. What conditions are needed for glaciers to form? Cold summers Heavy snowfall Snow does not fully melt 4. Why are glaciers important? Store freshwater Shape land Affect climate Earth’s Layers & Plate Tectonics 5. What is the thinnest layer of Earth? Crust 6. What are the three main layers of Earth? Crust Mantle Core 7. What is plate tectonics? Earth’s crust is made of moving plates 8. What are the three plate boundaries? Divergent Convergent Transform Memory Trick Divergent = divide Convergent = collide Transform = slide past 9. What causes earthquakes? Movement of tectonic plates 10. What is an aftershock? Smaller earthquake after a major one 11. What is a fault? Crack in Earth where movement happens Rocks, Volcanoes & Erosion 12. Which rock forms when magma or lava cools? Igneous rock 13. What are the three rock types? Igneous Sedimentary Metamorphic Memory Trick Igneous = fire Sedimentary = layers Metamorphic = changed by heat and pressure 14. What is the difference between magma and lava? Magma = underground Lava = surface 15. What are the three volcano activity levels? Active Dormant Extinct 16. What are the three volcano shapes? Shield Composite Cinder cone 17. What is weathering? Breaking down rock 18. What is erosion? Movement of dirt and rocks by water, wind, ice, or gravity 19. What is mechanical weathering? Physical breaking of rock 20. What is chemical weathering? Rock changes chemically 21. What is terracing? Flat steps cut into hillsides to reduce erosion Caves 22. What is the most common type of cave? Solution cave 23. Difference between stalactites and stalagmites Stalactites hang from the ceiling Stalagmites grow from the floor Memory Trick Stalactites hold “tight” to the ceiling Stalagmites “might” reach the ceiling Important Earth Science Terms 24. What is uniformitarianism? Natural processes today worked the same in the past 25. Difference between soil and dirt Soil has nutrients and supports life 26. What is elevation? Height above sea level 27. How deep have scientists explored into Earth? Only partway through Earth’s crust Atmosphere, Weather & Climate 28. Layers of the atmosphere Troposphere Stratosphere Mesosphere Thermosphere Exosphere Memory Trick The Sky Makes Tiny Explosions 29. What causes seasons? Earth’s tilted axis 30. Difference between weather and climate Weather = short-term conditions Climate = long-term average weather 31. What causes tides? Gravity from the moon and sun Fossils & Resources 32. Types of fossils Mold Cast Trace fossils 33. Renewable vs nonrenewable resources Renewable = naturally replaced Nonrenewable = limited supply Space Unit Solar System 34. Planets in order from the Sun Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Memory Trick My Very Educated Mother Just Served Us Nachos 35. What is the hottest planet? Venus 36. Largest planet Jupiter 37. Smallest planet Mercury 38. Planet that rotates on its side Uranus 39. Inner planets Mercury Venus Earth Mars 40. Outer planets Jupiter Saturn Uranus Neptune 41. Gas giants Jupiter Saturn 42. Ice giants Uranus Neptune 43. Why is Pluto not considered a planet? It has not cleared its orbit 44. What keeps planets in orbit? Gravity 45. Rotation vs revolution Rotation = spinning Revolution = orbiting Space Objects 46. Asteroid Rock in space 47. Meteor Streak of light in atmosphere 48. Meteorite Meteor that hits Earth 49. Comet Ice and dust object with a tail Space Exploration 50. NASA program that put humans on the moon Apollo Program 51. First man on the moon Neil Armstrong 52. Space shuttle that exploded Challenger Sun & Stars 53. Two elements that make up most of the sun Hydrogen Helium 54. What are sunspots? Cooler, darker spots on the sun 55. Surface temperature of the sun About 11,000°F 56. Type of energy from the sun Electromagnetic energy 57. How long sunlight takes to reach Earth About 8 minutes 20 seconds 58. Brightness of a star depends on Distance from Earth Amount of light it gives off 59. Supernova Exploding star 60. Nova Temporary brightening of a star 61. Nebula Cloud of dust and gas in space 62. Plasma Material the sun is made of Moon & Eclipses 63. Solar eclipse Moon blocks sunlight from reaching Earth 64. Why the moon has many craters Almost no atmosphere to burn up meteors 65. Why we only see one side of the moon Moon rotates and revolves at the same speed 66. Moon phases to know New Moon Waxing Crescent Full Moon Waning Gibbous Last Quarter Shortcut New → Waxing → Full → Waning Space Vocabulary 67. Milky Way Our galaxy 68. Astronomy Study of space 69. Light-year Distance light travels in one year 70. Constellation Group of stars forming a pattern 71. Most common galaxy shape Elliptical galaxy Chemistry Basics 72. What is an ion? Atom that gains or loses electrons and becomes charged 73. Ionic bond Electrons transferred between atoms Metal + nonmetal 74. Covalent bond Atoms share electrons Nonmetal + nonmetal 75. Metallic bond Metals bonded with freely moving electrons Metal + metal 76. Valence electrons Electrons in the outer energy level 77. Atomic number Number of protons 78. Exothermic reaction Reaction that releases energy 79. What metals usually do with electrons Lose electrons easily 80. Sulfur’s atomic number 16 81. Carbon valence electrons 4 82. Protons in arsenic 33 Parts of an Atom 83. Proton Positive charge 84. Neutron Neutral charge 85. Electron Negative charge 86. Where particles are found Protons & neutrons = nucleus Electrons = electron cloud Periodic Table 87. Groups/Families Vertical columns Same valence electrons 88. Periods Horizontal rows Same number of energy levels Metals 89. Six characteristics of metals Shiny/lustrous Solid at room temperature Malleable Ductile Conduct heat/electricity Reactive Noble Gases 90. Why are noble gases nonreactive? Full valence electron shell Other Chemistry Terms 91. Electronegativity Ability of an atom to attract electrons 92. Free electron model Electrons move freely through metals 93. First law of thermodynamics Energy cannot be created or destroyed 94. Reactants Starting substances in a reaction 95. Products New substances formed Acids & Bases 96. pH scale 0–6 = acidic 7 = neutral 8–14 = basic Nutrition 97. Three macronutrients Carbohydrates Fats Proteins Examples Carbs = bread/pasta Fats = avocado/nuts Proteins = meat/beans 98

Suffire

physio en sueur

class, gender and generational divide.

Maths- Dividing and Multiplying using decimals

GW 2.3 The Carbon Dioxide Record

etv uk suffers from a democratic deficit

Diodes Lecture Notes

Adding, Subtracting Multiplying and, Dividing Decimals

Philosophy Exam 1 ⸻ Sigmund Freud (Psychoanalysis) 1. Id – Ego – Superego Freud explains personality as a system of three interacting structures that are in constant conflict. * Id The id is entirely unconscious and represents instinctual drives such as aggression, hunger, and sexual desire. It operates on the pleasure principle, meaning it demands immediate satisfaction without considering reality, morality, or consequences. It is irrational and purely driven by biological impulses. * Ego The ego develops to mediate between the id and external reality. It operates on the reality principle, meaning it tries to satisfy instinctual desires in realistic and socially acceptable ways. It uses reasoning, planning, and delayed gratification. It is partly conscious and responsible for decision-making. * Superego The superego represents internalized moral values and social rules learned from parents and society. It judges behaviour and produces feelings of guilt or pride depending on whether actions align with moral standards. It often conflicts with the id by imposing strict moral constraints. Key idea: personality results from the continuous tension between instinct (id), reality (ego), and morality (superego). ⸻ 2. Defence Mechanisms Defence mechanisms are unconscious psychological strategies used by the ego to reduce anxiety caused by conflict between the id, superego, and reality. They distort perception in order to protect the individual from psychological discomfort. * Repression Unacceptable thoughts or memories are pushed into the unconscious and become inaccessible, although they may still influence behaviour indirectly. * Denial The individual refuses to accept a painful or threatening reality. * Projection The person attributes their own unacceptable feelings or impulses to others. * Displacement Emotional impulses are redirected from the original source to a safer target. * Rationalization The individual creates false but logical explanations for behaviour in order to avoid guilt or anxiety. * Reaction Formation An unacceptable impulse is transformed into its opposite behaviour. * Regression Under stress, the individual returns to earlier, more childish patterns of behaviour. * Sublimation Unacceptable impulses are transformed into socially acceptable or productive activities. * Intellectualization Emotional situations are dealt with through abstract or logical thinking to avoid confronting feelings. * Compensation The individual develops strengths in one area to make up for weaknesses in another. * Identification The person adopts the traits or behaviours of another individual to reduce anxiety or increase self-esteem. * Undoing The person attempts to symbolically cancel out unacceptable thoughts or actions through corrective behaviour. Key idea: defence mechanisms are automatic, unconscious, and protect the ego by distorting reality. ⸻ 3. Psychosexual Stages Freud argues that personality develops through stages where psychic energy (libido) is focused on different parts of the body. Fixation at a stage can influence adult personality. * Oral stage (0–1): pleasure through feeding; fixation may lead to dependence or oral habits. * Anal stage (1–3): focus on control and toilet training; fixation may lead to orderliness or messiness. * Phallic stage (3–6): development of gender identity and early moral awareness; family dynamics are central. * Latency stage (6–puberty): sexual energy is dormant; focus on learning and social development. * Genital stage (puberty onward): mature sexuality and adult relationships. Key idea: early childhood experiences strongly shape adult personality. ⸻ René Descartes 1. Dualism Descartes argues that reality is composed of two fundamentally different substances: * Mind (res cogitans): non-physical substance responsible for thinking, consciousness, reasoning, and doubt. * Body (res extensa): physical substance that occupies space and follows mechanical laws. Although distinct, mind and body interact, creating the mind–body problem of how two different substances can influence each other. Key idea: humans are composed of both mental and physical substances that are fundamentally different. ⸻ 2. Rationalism Rationalism is the view that reason is the primary source of knowledge, more reliable than sensory experience. Descartes argues that the senses can deceive us through illusions and dreams, so knowledge must be based on clear and distinct ideas produced by reason. He uses methodic doubt, systematically doubting all uncertain beliefs until reaching something absolutely certain. Key idea: reliable knowledge must come from reason rather than the senses. ⸻ 3. Cogito: “I think therefore I am” Descartes establishes that even radical doubt proves existence. If he is doubting, he must be thinking; if he is thinking, he must exist as a thinking being. Key idea: the act of thinking guarantees the existence of the self. ⸻ Plato 1. Ideal Society Plato’s political philosophy divides society into three classes corresponding to parts of the human soul: * Rulers (philosopher-kings): guided by reason and wisdom; they govern society. * Guardians: guided by courage; they protect and defend the state. * Producers: guided by desire; they provide material goods and services. Justice occurs when each class performs its proper function without interfering in the roles of others. Key idea: social justice is harmony through specialization and proper role distribution. ⸻ 2. Theory of Forms Plato distinguishes between two levels of reality: * The physical world: constantly changing, imperfect, and perceived through the senses. * The world of Forms: eternal, perfect, and unchanging essences such as Beauty, Justice, and Equality. Physical objects are imperfect copies of these perfect Forms. Key idea: true knowledge is knowledge of eternal Forms, not sensory appearances. ⸻ 3. Allegory of the Cave Plato describes prisoners chained in a cave who see only shadows and believe them to be reality. One prisoner escapes and discovers the real world illuminated by the sun, which represents truth. When he returns, the others reject him. Key idea: education is the process of moving from illusion to truth, which is difficult and often resisted. ⸻ Francis Bacon 1. Four Idols of the Mind Bacon identifies four sources of systematic error in human thinking: * Idols of the Tribe: universal human biases in perception and reasoning. * Idols of the Cave: individual biases shaped by personal experience and education. * Idols of the Marketplace: errors caused by language and communication. * Idols of the Theatre: blind acceptance of philosophical systems and traditions. Key idea: human reasoning is naturally flawed and must be corrected through scientific method. ⸻ 2. Empiricism Empiricism is the theory that knowledge comes from sensory experience and observation. Bacon argues that scientific knowledge must be based on experimentation, data collection, and systematic observation rather than pure reasoning. Key idea: knowledge is grounded in experience, not abstract speculation. ⸻ 3. Induction vs Deduction Induction is reasoning from specific observations to general laws. Deduction is reasoning from general principles to specific conclusions. Bacon emphasizes induction as the foundation of scientific knowledge because it is based on empirical evidence. Key idea: science progresses by building general laws from observed facts. ⸻ Friedrich Nietzsche 1. “God is Dead” Nietzsche argues that modern science and secular thinking have undermined the authority of traditional religion as a source of meaning and morality. This leads to a cultural crisis in which old values collapse without being replaced. Key idea: the loss of religious authority creates a crisis of meaning. ⸻ 2. Nihilism Passive nihilism refers to despair and the belief that life has no meaning. Active nihilism refers to the rejection of old values in order to create new ones. Key idea: nihilism represents both the breakdown of meaning and the possibility of creating new values. ⸻ 3. Übermensch The Übermensch is the ideal individual who creates their own values, rejects conformity, embraces life fully, and overcomes traditional moral systems. Key idea: humans must move beyond inherited values and become creators of meaning. ⸻ Charles Darwin 1. Natural Selection Evolution occurs through natural selection. Individuals within a species vary, and those with advantageous traits are more likely to survive and reproduce. Over time, these traits become more common in the population. Key idea: evolution is driven by survival advantage rather than purposeful design. ⸻ 2. Morality (Evolutionary view) Darwin argues that morality is not divine but evolved through natural processes. Humans developed social instincts such as empathy and cooperation because these traits improved survival within groups. Key idea: morality is a product of biological and social evolution

Aeneid Book 4 Quis dixit/fecit? (4.1-172)

Suppression of Dissidents + Secret Police

pain and effing suffering in criminal law (all of it)

→ Understand what occurred at the Yalta Conference, including who was present at this meeting -“How do we deal with defeated or liberated countries of Eastern Europe after the war? -Pushed for interim government authority that represents a democracy -USSR would join the war against Japan when Germany is defeated → Claimed they would hold free elections in places freed from Nazi Germany, these free elections did not happen *Memebers present*: FDR (U.S), Churchill (U.K), Stalin (U.S.S.R) → Understand what was discussed at Potsdam, including who was present at this meeting and why that is important. Who is the consistent person at both conferences? → Post-War Germany→ What to do with it? -Confirmed plans to demilitarize Germany and split it into 4 occupied zones -Nuremberg trials tried Nazi’s for war crimes -Potsdam Declaration → Threatened massive attack on Japan unless they surrendered and laid out non-negotiable terms for peace → How did they split Germany? How did they split Berlin? -Split Germany into 4 occupation zones (France, U.S., U.K., U.S.S.R) → Split Berlin into 4 zones, giving the U.S.S.R the majority since Berlin lays in their zone of occupation → Berlin Wall splits Capitalism to the West and Communism to the East Capitalism vs. Communism (Week 10, 4/13: “Capitalism vs. Communism Packet.”) → Understand the fundamental differences between Capitalism and Communism → What major countries are Communist or Capitalist? Communism: USSR, China, North Korea, Vietnam Capitalist: Everyone else (U.S., France, G.B, South Korea) → What is the goal of both economic systems? → Communism: Eliminate social classes, create a classless/moneyless society → Private property is nonexistent, everything is public → Capitalism: Create a free market where individuals have the ability to make their own money and have independence to make their own economic decisions → Private property fuels the capitalist system Arms Race (Week 11, 4/20. “Arms Race PPT Reading”, “Arms Race PPT Dropbox”) → What is an “Arms Race?” Who participated in this “Race?” When two or more countries increase the size of military resources to gain military/political superiority over each other → U.S and U.S.S.R are the countries participating in this Arms Race → Start of the Cold War? → Dropping the nuclear bomb officially started the Arms Race → What type of Arms were being produced by major world powers? Nuclear weapons, ICBMs → How does an Arms Race affect the world/humanity in the world? MAD → If everyone is producing more powerful weapons this puts the world at risk for the possibility of Nuclear War. → If one launches a missile/drops a bomb then the other country retaliates until the world is basically over *The world is at a constant state of fear of the possibility of the unknown and potential end of the war* Space Race (Week 11, 4/22: “Space Race Primary Source Chart”) → What does the “Space Race” imply? Who is racing to space? -Who can get to Space first? The U.S or Soviet Union → Started with the race to space, developed into the race to the moon once the USSR reached space first… U.S reached the moon first → How did the Space Race affect U.S and Soviet Union relations? Greatly intensified Cold War tensions and the constant battle for superiority in any/every way possible for the US and USSR → Led to a greater technological race and a superiority aspect of it for both countries which further increased the need for national defense and funding for specific programs (NASA) Korean War (Week 11, 5/24: “Korean War Webquest”, Week 12, 4/27: “Korean War Textbook Analysis” ) → Who fought in the Korean War? Why was there a conflict in Korea? North Korea, the USSR, and China (communists) vs. South Korea and U.S → Korea used to be under Japanese influence until the end of WWII where it got split up at the 38th parallel by the US and USSR → The war started by the North invading the South and pushing them back to as far south as they could go before the U.S got involved and pushed them back to the 38th parallel and then some → Amercia feared that communism would continue to spread throughout the rest of the Asian continent → What is the legacy of the Korean War today? What is the dividing line between the two Koreas today? North Korea is still communist, South Korea is still capitalist → DMZ (demilitarized zone) at the 38th parallel that is still present today → Nobody won the war, both sides lost? → Forgotten war → Too many casualties → How did the Korean War symbolize the overall theme of the Cold War? This showed how the United States and Soviet Union were at a constant battle with one another and how there is the global struggle between communism and capitalism → Also demonstrated how concerned the United States was with the possible spread of Communism outside of the Soviet Union and how they would do anything to stop the spread Cuban Revolution (Week 12, 4/28: “Cuban Revolution Readings/Guided Questions.”) → Who was the Dictator of Cuba before Castro? Why did he have good relations with the United States? -Castro started to move away from U.S businesses and work more closely with the USSR who supported him. After the Cuban Revolution, the USSR was extremely supportive to Castro and the Cubans → When Castro came to power, how did Cuban relations with the U.S change? How did this change affect the Cuban relationship with the U.S.S.R? -Castro started to move away from U.S businesses and work more closely with the USSR who supported him. After the Cuban Revolution, the USSR was extremely supportive to Castro and the Cubans → Because the U.S openly disliked Castro and were not fans of him due to the change in American business AND the fact that Cuba was turning into a communist nation. → Castro nationalized land and businesses that were owned by the U.S which hurt their economy -Because of the strained relationship with the United States, this strained their relationship and strengthened the relationship between Cuba and the Soviet Union Bay of Pigs (Week 12, 5/1: “Bay of Pigs Packet”) → What was the “Bay of Pigs?” Who initiated this invasion? What was the overall goal of the United States by carrying out this plan? Was it successful? -Bay of Pigs was a failed attempt by the United States to overthrow Fidel Castro -They trained Cuban exiles who opposed Castro’s government to stage an uprising planned by the CIA → Goal was to overthrow Castro and put their own leader in control to benefit U.S business interest *Not successful* Invasion lasted 2 days and this pushed Cuba even closer to the USSR and made Castro look even stronger in Cuba Cuban Missile Crisis (Week 13, 5/4: “Cuban Missile Crisis Primary Source Worksheet”) → What is the “Cuban Missile Crisis?” How did tensions rise so high to almost reach a nuclear war? The U.S had missiles (ICBMs) in Italy and Turkey, close enough to fire at the USSR. The Soviet Union had missiles stationed in newly communist Cuba, 90 miles off the coast of Florida. The threat of a Nuclear War was as close as it ever was because nobody knew when a missile would launch, or who would be the one to launch it. → The U.S put a blockade on Cuba, which to the USSR seemed like an act of war. This increased the tensions between the two countries of who would “blink first” → Where did the U.S have missiles? Where did the U.S.S.R have them? U.S: Italy and Turkey USSR: Cuba Vietnam War (Week 13, 5/8. “Vietnam War Intro Notes”, Week 14, 5/11: “Vietnam War Stations Activity”) → Understand who was fighting on behalf of North and South AND the roles of both fighting parties supporting the North and South Vietnamese, respectively. The United States fought with South Vietnam, sending several million men to fight. The U.S was much more direct in the conflict, providing materials, strategy, men, and other equipment -The USSR did not send as many troops to fight with North Vietnam, but they did provide military aid (weapons), and military/logistical support → Main goal was to spread communism more in Asia → What was the significance of the Gulf of Tonkin AND the Gulf of Tonkin Resolution and how that affected United States involvement in the Vietnam War? The Gulf of Tonkin is in North Vietnam. U.S. destroyers got attacked, allegedly by the North Vietnamese which gave President Johnson the justification to enter the Vietnam War -Gulf of Tonkin Resolution was the response by President Johnson to enter the war without an official declaration of war approved by Congress → This led to the draft of 18-26 year old male citizens → Why was the Tet Offensive significant to the Vietnam War? How did this affect how people in the United States viewed the Vietnam War as a whole? North Vietnamese and Communist “Viet Cong” soldiers attack the South, giving heavy losses to them. Public support is going down significantly in the United States since this was the first televised war, showing the people at home how horrible the truths of war really are and how it is not being won by the U.S like the President is saying → Understand what a PROXY WAR is and the DOMINO THEORY and how it relates to the Cold War relations of the U.S and U.S.S.R. Proxy War is a conflict where a country supports other groups, often people not in the country, to fight a war against a common enemy without directly engaging into the conflict itself → These supported groups (Korea, Vietnam) can recieve military aid, funding, or training → Goal is to exert influence → EXAMPLES: Korea and Vietnam Domino Theory → The theory that if one country falls to communism then a surplus of others will fall to communism. This is a fear of the United States trying to prevent communism from spreading all over the world, putting their global dominance at risk

Carbon Dioxide and Respiratory Conditions Flashcards

suffering

potential dividers

Peptides and Peptidomimetics: Sulfur Containing Cyclic Peptides