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Circulation in Earth's Air and Water
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What is a Hurricane, Typhoon, or Tropical Cyclone? The terms "hurricane" and "typhoon" are regionally specific names for a strong "tropical cyclone". A tropical cyclone is the generic term for a non-frontal synoptic scale low-pressure system over tropical or sub-tropical waters with organized convection (i.e. thunderstorm activity) and definite cyclonic surface wind circulation (Holland 1993). Tropical cyclones with maximum sustained surface winds of less than 17 m/s (34 kt, 39 mph) are usually called "tropical depressions" (This is not to be confused with the condition mid-latitude people get during a long, cold and grey winter wishing they could be closer to the equator). Once the tropical cyclone reaches winds of at least 17 m/s (34 kt, 39 mph) they are typically called a "tropical storm" or in Australia a Category 1 cyclone and are assigned a name. If winds reach 33 m/s (64 kt, 74 mph), then they are called: "hurricane" (the North Atlantic Ocean, the Northeast Pacific Ocean east of the dateline, or the South Pacific Ocean east of 160E) "typhoon" (the Northwest Pacific Ocean west of the dateline) "severe tropical cyclone" or "Category 3 cyclone" and above (the Southwest Pacific Ocean west of 160°E or Southeast Indian Ocean east of 90°E) "very severe cyclonic storm" (the North Indian Ocean) "tropical cyclone" (the Southwest Indian Ocean) Coriolis Effect The Coriolis Effect—the deflection of an object moving on or near the surface caused by the planet’s spin—is important to fields, such as meteorology and oceanography. Storm Approaching Southeast Asia Because of the Coriolis Effect, hurricanes spin counterclockwise in the Northern Hemisphere, while these types of storms spin clockwise in the Southern Hemisphere. This Northern Hemisphere storm, approaching Southeast Asia, is spinning counterclockwise. Earth is a spinning planet, and its rotation affects climate, weather, and the ocean through the Coriolis Effect. Named after the French mathematician Gaspard Gustave de Coriolis (born in 1792), the Coriolis Effect refers to the curved path that objects moving on Earth’s surface appear to follow because of the spinning of the planet. As Earth turns, points near the equator—countries like Ecuador and Kenya—are moving much faster than places near the planet’s poles. This is because Earth is shaped like a marble: Its circumference is larger near its middle (the equator) than near its top and bottom. All places on Earth experience a day that is about 24 hours long, but points near the equator have to travel longer distances in the same period of time, which means that those places move faster. Scientists say these points have more “angular momentum.” This is why rockets are usually launched from places near the equator, like Cape Canaveral, Florida, United States. Such locations give rockets a large initial speed, which helps them get into orbit using the least possible amount of fuel. The Coriolis Effect influences wind patterns, which in turn dictate how ocean currents move. Imagine wind near the equator flowing to the north. That wind starts with a certain speed due to Earth’s rotation (near the equator, Earth rotates at a speed of roughly 1,600 kilometers per hour (1,000 miles per hour) from west to east). As the wind travels north toward the North Pole, it moves over parts of Earth that are rotating progressively more slowly. Since the wind retains its angular momentum, it keeps moving from west to east, overtaking the part of Earth turning more slowly below it. As a result, the wind appears to bend to the east (that is, to the right). This is the Coriolis Effect in action. Wind flowing south from the equator would likewise bend to the east. This effect is responsible for many meteorological and oceanographic phenomena. For instance, due to the Coriolis Effect, hurricanes in the Northern Hemisphere spin in a counterclockwise direction, while hurricanes in the Southern Hemisphere (known as cyclones) spin in a clockwise direction. Ocean-circling currents known as “gyres” also spin in spiral patterns thanks to the Coriolis Effect. There is an urban legend that water in toilets spins in opposite directions in the Northern and Southern Hemispheres because of the Coriolis Effect. But that isn't true—a toilet bowl is too small for the effect to be observed. Instead, other factors like the shape of the toilet bowl and the direction that the water enters are largely responsible for how the flushing water moves.Early society and accomplishments Origins Knowledge of the early prehistory of Southeast Asia has undergone exceptionally rapid change as a result of archaeological discoveries made since the 1960s, although the interpretation of these findings has remained the subject of extensive debate. Nevertheless, it seems clear that the region has been inhabited from the earliest times. Hominid fossil remains date from approximately 1,500,000 years ago and those of Homo sapiens from approximately 40,000 years ago. Furthermore, until about 7000 bce the seas were some 150 feet (50 metres) lower than they are now, and the area west of Makassar Strait consisted of a web of watered plains that sometimes is called Sundaland. These land connections perhaps account for the coherence of early human development observed in the Hoabinhian culture, which lasted from about 13,000 to 5000 or 4000 bce. The stone tools used by hunting and gathering societies across Southeast Asia during this period show a remarkable degree of similarity in design and development. When the sea level rose to approximately its present level about 6000 bce, conditions were created for a more variegated environment and, therefore, for more extensive differentiation in human development. While migration from outside the region may have taken place, it did not do so in a massive or clearly punctuated fashion; local evolutionary processes and the circulation of peoples were far more powerful forces in shaping the region’s cultural landscape. Technological developments and population expansion Perhaps because of a particular combination of geophysical and climatic factors, early Southeast Asia did not develop uniformly in the direction of increasingly complex societies. Not only have significant hunting and gathering populations continued to exist into the 21st century, but the familiar cultural sequences triggered by such events as the discovery of agriculture or metallurgy do not seem to apply. This is not to say that the technological capabilities of early Southeast Asian peoples were negligible, for sophisticated metalworking (bronze) and agriculture (rice) were being practiced by the end of the 3rd millennium bce in northeastern Thailand and northern Vietnam, and sailing vessels of advanced design and sophisticated navigational skills were spread over a wider area by the same time or earlier. Significantly, these technologies do not appear to have been borrowed from elsewhere but were indigenous and distinctive in character. Austronesian languages Austronesian languagesMajor divisions of the Austronesian languages. These technological changes may partially account for two crucial developments in Southeast Asia’s later prehistory. The first is the extraordinary seaborne expansion of speakers of Proto-Austronesian languages and their descendants, speakers of Austronesian (or Malayo-Polynesian) languages, which occurred over a period of 5,000 years or more and came to encompass a vast area and to stretch nearly half the circumference of Earth at the Equator. This outward movement of people and culture was evolutionary rather than revolutionary, the result of societal preference for small groups and a tendency of groups to hive off once a certain population size had been reached. It began as early as 4000 bce, when Taiwan was populated from the Asian mainland, and subsequently it continued southward through the northern Philippines (3rd millennium bce), central Indonesia (2nd millennium bce), and western and eastern Indonesia (2nd and 1st millennia bce). From approximately 1000 bce on the expansion continued both eastward into the Pacific, where that immense region was populated in a process continuing to about 1000 ce as voyagers reached the Hawaiian Islands and New Zealand, and westward, where Malay peoples reached and settled the island of Madagascar sometime between 500 and 700 ce, bringing with them (among other things) bananas, which are native to Southeast Asia. Thus, for a considerable period of time, the Southeast Asian region contributed to world cultural history, rather than merely accepting outside influences, as frequently has been suggested. The second development, which began possibly as early as 1000 bce, centred on the production of fine bronze and the fashioning of bronze-and-iron objects, particularly as they have been found at the site in northern Vietnam known as Dong Son. The earliest objects consisted of socketed plowshares and axes, shaft-hole sickles, spearheads, and such small items as fishhooks and personal ornaments. By about 500 bce the Dong Son culture had begun producing the bronze drums for which it is known. The drums are large objects (some weigh more than 150 pounds [70 kg]), and they were produced by the difficult lost-wax casting process and decorated with fine geometric shapes and depictions of animals and humans. This metal industry was not derived from similar industries in China or India. Rather, the Dong Son period offers one of the most powerful—though not necessarily the only or earliest—examples of Southeast Asian societies transforming themselves into more densely populated, hierarchical, and centralized communities. Since typical drums, either originals or local renditions, have been found throughout Southeast Asia and since they are associated with a rich trade in exotics and other goods, the Dong Son culture also suggests that the region as a whole consisted not of isolated, primitive niches of human settlement but of a variety of societies and cultures tied together by broad and long-extant trading patterns. Although none of these societies possessed writing, some displayed considerable sophistication and technological skill, and, although none appears to have constituted a territorial centralized state, new and more complex polities were forming.Circulation in building Limbs - (usually 4) in 2 pairs with associated shoulder and hip girdle Each limb usually has 4 digits. Hind limb (sometimes 5) Skeleton mostly boney Ectothermic (cold blooded) Smooth moist + glandular skin modified for cutaneous respiration (breathe through skin) Pigment cells (also called chromatophores) Mouth is usually large with small teeth in the upper or both jaws and on the vulgar (2 teeth sets on roof of mouth) palate 3 part brain: fore brain midbrain Hindbrain Ear with a tympanic membrane and stapes (ear bones) Have eyelids Lachrymal glands that protect and wash the eye Separate sexes mostly external fertilization. Respiration by the skin, gills, and lungs All amphibians go through metamorphosis A heart with 2 atria, 1 ventricle, and double circulation Skin abundantly supplied with blood vesselsYawn (v) to open your mouth wide and breathe in deeply because you are tired or bored. Ex: Alan stretched and yawned. Sneeze (v) air suddenly comes from your nose, making a noise. Ex: I’ve been sneezing all morning. Reflex (n) a movement of your body that happens naturally in response to something. Ex: The doctor tested her reflexes. Sharp (adj) a very thin edge or point that can cut things easily. Ex: Be careful with that sharp axe. Pull away (p.v) to move away from something. Ex: He tried to pull away before the car hit him. Coordination (n) the way in which your muscles move together. Ex: These dancers have poor coordination. Breathing (n) How the body takes in oxygen and expels carbon dioxide from our lungs. Ex: For most of us breathing is automatic. Movement (n) How we move from one place to another. Ex: She is alert to every movement. Digestion (n) How the body turns food into energy for us to use. Ex: His digestion is bad. Blood circulation (n) How blood carries materials such as oxygen and nutrients around our body. Ex: Exercise will improve blood circulation. Helmet (n) a strong hat that protects your head. Ex: Wear a helmet when you ride your bike. Attendant (n) Someone who looks after customers in public places. Ex: We met an attendant in the office. Evidence (n) facts or signs that show clearly that something exists or is true. Ex: The police found the evidence in the crime scene. Twirl (v) To turn around quickly. Ex: He made the ice twirl in his glass. Frilly (adj) Decorative material on a dress or skirt. Ex: She is wearing a frilly dress. Itch (v) Rub or scratch your skin with your nails. Ex: I itch all over my body. Tantrum (n) When a young child gets angry. Ex: He had a tantrum when his sister used his phone. Shriek (v) Short, loud cry or scream. Ex: She shrieked in fright. Balk (v) Protest (because you don’t want to do something.) Ex: Many people balk at this danger. Frustration (n) The feeling of being annoyed or upset because you can’t achieve something. Ex: Don't take your frustration out on me. Proclaim (v) To say something important. Ex: The president proclaimed a public holidayAcupuncture, which is called zhen jiu in Chinese, is a medical treatment that originated in China. Zhen means 'needles that pierce one's body'. Jiu means 'moxibustion', a special treatment in traditional Chinese medicine. Plant leaves were once used to smoke certain parts of the human body. Traditional Chinese medicine describes the energy flow within the human body as a network. It is called jīngluò. The major nodes on the network are called qi wei. or an acupuncture point. Traditional Chinese doctors believe that stimulating the qi wei can promote energy circulation and expel illness. For example, having zhen jiu on zu san li can promote digestion and having zhen jiu on nei guan is good for one's heart. Chinese people have been using this medical treatment for thousands of years. The tiny needles reveal the mysteries of human body.56 1. Stroke is caused by the absence of blood in the brain. 2. Heart Attack means when the heart stops pumping due to constricted blood vessels. Nicotine affects the liver’s role in removing the fats from the blood which can caused the blood vessels to clog and eventually blocked. 3. Poor blood circulation- absorption of nicotine in the blood , makes the blood vessels to constrict, hence making it difficult for blood to pass through. 4. Uneasiness, irritability and laziness. BPersonal cleanliness means attending to your personal hygiene regularly, thus keeping your body free from bad odor and infectious diseases. In keeping your body clean, you have to use grooming aids discussed in previous module. Remember that to achieve a clean and healthy body you need to practice good grooming habits as well as good healthy habits. Your Body Regular care of the body is necessary for good health and pleasing appearance. As you grow, you should learn to be responsible to your self. You should never neglect your body. Your body is the temple of the Holy Spirit. That is why , if you take good care of your body, you are in effect taking care of the place where the Holy Spirit resides. You are the “masterpiece of God’s creation” which means to say that you are above all other creations of God. So, it is best to maintain your body clean and healthy. For your own good and in so doing, you are showing your reverence to God, our creator. “Rule of Thumb” to keep your body clean is to take a regular bath. Taking a bath is necessary to remove dust, germs, as well as dirt accumulated from your daily activities. It is invigorating for the act of cleansing stimulates blood circulation. It will give your skin a healthy pinkish glow. Something to read: Home Economics and Livelihood Education 7 Seibo College 31 There are three ways of taking a bath: 1. Full bath It includes washing, shampooing the hair, soaping the whole body and rinsing with clear water. It is a thorough cleansing of the body. 2. Shower A shower bath usually takes a shorter time than full bath. A wash clothe or sponge with thick lather is rub all over the body starting from the navel, then the thigh, joints, armpits, and the rest of the body. Then rinse your body in the shower and pat your body dry with clean towel 3. Sponge bath Use wash cloth or face towel with soap, soak in warm or cold water. Rub it briskly over the body. Rinse the cloth with clean water then use it to remove soap from the body. A sponge bath is usually given to a sick person.