Wednesday, 29 April 2015

MAPPING

MAPPING

A map is a picture that represents a particular part of the Earth’s surface, usually from above and at a reduced size. It can show the whole world, a single country, or the street where you live. Unlike a photograph, a map can give different kinds of information, such as place names, the elevation of the land, or the borders between countries.

TIME ZONES

The world is divided into 24 time zones, starting with Greenwich Mean Time (GMT) on the prime meridian. Countries to the east of this line are ahead of GMT, those to the west are behind. The 180° line of longitude is called the International Date Line. Places just west of this line are one day ahead of places to the east.

LATITUDE AND LONGITUDE

Latitude

Imaginary lines drawn around the world to make a grid tell us exactly how far north, south, east, or west anywhere on Earth is. Horizontal lines of latitude run from east to west, parallel to the Equator which runs around the middle of Earth, and is given the value 0°. All other lines of latitude are numbered in degrees north or south of it. They measure how far north or south a place is.

 
 

Longitude

Vertical lines of longitude run between the North and South Poles. The prime meridian (numbered 0°) runs through Greenwich, England, and all other lines of longitude are numbered in degrees east or west of this line. The line opposite the prime meridian on the other side of the world is numbered 180°. Lines of longitude measure how far east or west a place is.

EVOLUTION

EVOLUTION

SPECIALIZED FOR SURVIVAL
DUNKLEOSTEUS
EVOLUTION OF THE ELEPHANT
NATURAL SELECTION
ADAPTATION
FIND OUT MORE
The process by which changes occur in living things over time is known as evolution. The changes are passed from one generation to the next in genes. NATURAL SELECTION is one process by which evolution may occur. In nature, individuals with an ADAPTATION that helps them survive are more likely to reproduce. More of these individuals pass on their genes than their rivals, so the adaptation is more common in the next generation and builds up in the species.

SPECIALIZED FOR SURVIVAL

Although the forelimbs of mammals, birds, and reptiles are modified in different ways, the basic design is the same, suggesting they all descended from a common ancestor. The basic design includes one upper arm bone, two lower arm bones, and five fingers.

DUNKLEOSTEUS

Some animals become extinct as a result of evolution. They are replaced by other animals that are better able to survive. Dunkleosteus was an armoured fish with powerful jaws that lived about 350 million years ago. It may have become extinct as larger, faster sharks evolved, out-competing it for the fish they both hunted.

EVOLUTION OF THE ELEPHANT

Today’s elephants are the result of a long process of evolution. Over millions of years, small changes were passed from one generation to the next. The first fossil elephant species were small, but over time they increased both in size and weight. The three species alive today are the sole survivors of a once much more widespread group.

NATURAL SELECTION

Not all offspring survive to become adults. Those with favourable variations, such as long, thick fur in a cold environment, are more likely to survive than those without. This effect of different characteristics on survival is what the scientist Charles Darwin called natural selection. Natural selection is a cause of evolution but it is not the only cause.

HONEY CREEPERS
Natural selection can create new species. These Hawaiian honeycreepers all evolved from a single ancestor, which arrived on the islands long ago. With no other birds for competition, the honeycreepers began to feed on different foods. Over many generations, their bills changed to cope with their new diets.

BIOGRAPHY: CHARLES DARWIN British, 1809-1882

Darwin spent years gathering evidence to support his idea of evolution by natural selection. He travelled the world on expeditions aboard the ship, HMS Beagle. When he reached the Galapagos Islands in the Pacific, he was inspired by the number of unique species he found there.

PEPPERED MOTHS

During the Industrial Revolution in the 1880s, pollution blackened trees in parts of England. Previously rare black peppered moths began to increase, as they were harder for birds to spot than their speckled counterparts. By 1900, most moths in industrial areas were black. Now, with pollution controlled, the black population has fallen again.

ADAPTATION

Adaptation is an outcome of natural selection. It is the gradual matching of an animal to its environment over time. It applies to everything about an animal from its anatomy and behaviour to its life cycle. It is important in evolutionary terms because the better adapted an animal is, the more likely it is to survive and produce offspring.

ECHIDNA
The short-nosed echidna of Australia and Tasmania is well adapted to its diet of ants and termites. It has powerful claws to break into ant nests and termite mounds, and a long, sticky tongue to collect its prey. The short-nosed echidna also has spines to protect itself. It cannot roll up like a hedgehog – instead, when threatened, it digs quickly downwards to protect its soft underbelly.

MARINE IGUANAS

The marine iguana lives on the Galapagos Islands and feeds exclusively on seaweed. It shows a number of adaptations to this lifestyle. Because it feeds underwater, the marine iguana is a good swimmer and has a long tail, flattened from side to side, to help propel it through the water. It also has special glandular structures in its nose to help it get rid of excess salt.

HABITATS

HABITATS

 
A habitat is a place where plants and animals live, and provides them with food and shelter. It can be very small, such as a single tree or pond, or vast, such as a rainforest or desert. The physical conditions in a place and its vegetation are both part of the habitat. HABITAT LOSS is occurring in many parts of the world.
TROPICAL FOREST
Tropical rainforests, such as the Amazon rainforest in South America, flourish in equatorial regions where it is hot all year round and it rains almost every day. A rainforest contains three main habitats: the upper layers of the trees, called the canopy; the darker, cooler understorey; and the forest floor. A greater variety of species live here than in any other habitat.
DESERT
This quiver tree, in South Africa’s Northern Cape, is adapted to survive its desert habitat by storing water in its stout trunk. Deserts are harsh, dry habitats, with sometimes no rain for years. Animals and plants that live there have to cope with daytime temperatures of up to 50°C (120°F) and nights that can be very cold.

HABITAT LOSS

Habitat loss is the destruction of habitats such as forests and marshes through human activities, especially forestry and farming. Many species of animals and plants live in one small habitat and cannot survive anywhere else. It is estimated that more than a hundred species become extinct every day through habitat loss.

DEFORESTATION

Cutting down natural forests (rather than forestry plantations) is called deforestation. The world’s tropical rainforests have suffered most from serious deforestation. The trees are cut down for their valuable timber, or burned to make space for farming and ranching. Across the world, an area of rainforest larger than the city of New York is cut down every day.

planet earth

PLANET EARTH

PLANET EARTH

ATMOSPHERE
OCEANS
LAND
ICE AND SNOW
EARTH SCIENCE
STUDY TECHNIQUES
BIOSPHERE
AXIS
FIND OUT MORE
The rocky ball that forms our world is one of nine planets in the Solar System. Earth is a sphere, with a slight bulge in the middle at the Equator, and a diameter of 12,756 km (7,926 miles). It hurtles at speeds of 105,000 kph (65,000 mph) during its orbit around the Sun, turning on its AXIS once every 24 hours. This journey takes a year to complete. The Earth is the only planet that is known to support life, in a zone called the BIOSPHERE.
UNIQUE PLANET
Water, oxygen, and energy from the Sun combine on Earth to help create suitable conditions for life. The planet’s surface is mainly liquid water, which is why it looks blue from space. Earth is the only planet in the Solar System with an atmosphere that contains a large amount of oxygen. The Sun is 150 million km (93 million miles) away, producing heat that is bearable on Earth.

ATMOSPHERE

The atmosphere is a layer of gas surrounding the Earth that is some 700 km (400 miles) thick. It is made up of nitrogen (78 per cent) and oxygen (21 per cent), plus traces of other gases. Tiny droplets of water vapour form the clouds we see.

OCEANS

Oceans cover 70.8 per cent of the Earth’s surface, to an average depth of 3.5 km (2 miles). The hydrosphere (watery zone) also includes freshwater rivers and lakes, but these make up less than 1 per cent of Earth’s water.

LAND

Dry land occupies 29.2 per cent of the Earth’s surface, where the lithosphere (rocky crust) rises above sea level to form seven continents and countless smaller islands. Land can be categorised into biomes – major habitats such as forests, grasslands, and deserts.

ICE AND SNOW

The cryosphere (frozen zone) includes snow and glaciers on high mountains, sea ice, and the huge ice caps that cover the landmasses of Greenland and the Antarctic. In the past, during long cold eras called ice ages, ice covered much more of Earth’s surface than it does today.

EARTH SCIENCE

Meteorology, the study of Earth’s atmosphere, is one of the Earth sciences. Earth scientists study Earth’s physical characteristics, from raindrops to rivers and the rocks beneath our feet. Other branches of study include geology (rocks), hydrology, (oceans and freshwater), and ecology (living things and the environment).

STUDY TECHNIQUES

Satellite images allow scientists to monitor everything from ocean currents to minerals hidden below ground. Techniques such as radar and sonar have transformed our understanding of our planet. Some Earth scientists also spend time in the field, which means working outdoors, collecting data and samples from clouds, cliffs, craters, volcanic lava, and deep-buried ice.

BIOSPHERE

The biosphere is the part of Earth that contains what is needed for living things. This zone extends from the ocean floor to top of the troposphere (lower atmosphere). Tiny organisms can survive deep in the Earth’s crust, but most forms of life are found from a few hundred metres below sea level to about 1,000 m (3,300 ft) above sea level.

THE LIFE ZONE

Ozone is a gas spread thinly through the atmosphere. It filters harmful ultraviolet (UV) rays from sunlight, while allowing visible light (the light we can see) to pass through. Other gases in the atmosphere trap the Sun’s heat when it is reflected from the Earth’s surface, providing additional warmth for living things.

BIOGRAPHY: JAMES LOVELOCK British, 1919-

Environmental scientist James Lovelock argues that the planet can be seen as a complete living organism, which he names Gaia, after the Greek goddess of Earth. Gaia theory states that Earth itself balances conditions to suit living things in the biosphere. This includes regulating the composition of the atmosphere the chemistry of the oceans, and ground surface temperature.

AXIS

The ground beneath our feet may seem still, but in fact the Earth is spinning like a top as it orbits the Sun. The Earth takes 24 hours to rotate about its axis, an imaginary line running from the North Pole to the South Pole through the centre of the Earth. The Earth’s axis is not at a right-angle to the path of its orbit, but tilts at an angle of 23.5°. The angle between each region of Earth and the Sun’s rays alters through the year, producing seasonal changes in temperature and day length. These are most noticeable in regions next to the poles, which are most distant from the Equator.

DAY AND NIGHT

As Earth turns about its axis, one half is bathed in sunlight and experiences day, while the other half is plunged into darkness and has night. The Earth always rotates eastward, so the Sun and stars appear to rise in the east and set in the west. The tilt of the planet means that at any time, one hemisphere (half of the Earth, as divided by the Equator) leans toward the Sun and experiences summer, while the other leans away and has winter.

Tuesday, 28 April 2015

knowledge about world

World


 "The Blue Marble" photograph of Earth.
 
A map of world shorelines and national borders under the Robinson projection.
 
The flag of the World Health Organization combines a modern world map (azimuthal equidistant projection) with the Rod of Asclepius, in origin a symbol of the axis mundi[1]
World is a common name for the whole of human civilization, specifically human experience, history, or the human condition in general, worldwide, i.e. anywhere on Earth[2] or pertaining to anywhere on earth.
In a philosophical context it may refer to:
  1. the whole of the physical Universe, or
  2. an ontological world (see world disclosure).
In a theological context, world usually refers to the material or the profane sphere, as opposed to the celestial, spiritual, transcendent or sacred. The "end of the world" refers to scenarios of the final end of human history, often in religious contexts.
World history is commonly understood as spanning the major geopolitical developments of about five millennia, from the first civilizations to the present.
World population is the sum of all human populations at any time; similarly, world economy is the sum of the economies of all societies (all countries), especially in the context of globalization. Terms like world championship, gross world product, world flags etc. also imply the sum or combination of all current-day sovereign states.
In terms such as world religion, world language, world government, and world war, world suggests international or intercontinental scope without necessarily implying participation of the entire world.
In terms such as world map and world climate, world is used in the sense detached from human culture or civilization, referring to the planet Earth physically.

Contents

Etymology and usage

The English word world comes from the Old English weorold (-uld), weorld, worold (-uld, -eld), a compound of wer "man" and eld "age," which thus means roughly "Age of Man."[3] The Old English is a reflex of the Common Germanic *wira-alđiz, also reflected in Old Saxon werold, Old High German weralt, Old Frisian warld and Old Norse verǫld (whence the Icelandic veröld).[4]
The corresponding word in Latin is mundus, literally "clean, elegant", itself a loan translation of Greek cosmos "orderly arrangement." While the Germanic word thus reflects a mythological notion of a "domain of Man" (compare Midgard), presumably as opposed to the divine sphere on the one hand and the chthonic sphere of the underworld on the other, the Greco-Latin term expresses a notion of creation as an act of establishing order out of chaos.
'World' distinguishes the entire planet or population from any particular country or region: world affairs pertain not just to one place but to the whole world, and world history is a field of history that examines events from a global (rather than a national or a regional) perspective. Earth, on the other hand, refers to the planet as a physical entity, and distinguishes it from other planets and physical objects.
'World' was also classically used to mean the material universe, or the cosmos: "The worlde is an apte frame of heauen and earthe, and all other naturall thinges contained in them." [5] The earth was often described as 'the center of the world'.[6]
'World' can also be used attributively, to mean 'global', 'relating to the whole world', forming usages such as world community or world canonical texts.[7]
By extension, a 'world' may refer to any planet or heavenly body, especially when it is thought of as inhabited, especially in the context of science fiction or futurology.
'World', in original sense, when qualified, can also refer to a particular domain of human experience.

Philosophy

The Garden of Earthly Delights triptych by Hieronymus Bosch (c. 1503) shows the "garden" of mundane pleasures flanked by Paradise and Hell. The exterior panel shows the world before the appearance of humanity, depicted as a disc enclosed in a sphere.
In philosophy, the term world has several possible meanings. In some contexts, it refers to everything that makes up reality or the physical universe. In others, it can mean have a specific ontological sense (see world disclosure). While clarifying the concept of world has arguably always been among the basic tasks of Western philosophy, this theme appears to have been raised explicitly only at the start of the twentieth century[8] and has been the subject of continuous debate. The question of what the world is has by no means been settled.
Parmenides
The traditional interpretation of Parmenides' work is that he argued that the every-day perception of reality of the physical world (as described in doxa) is mistaken, and that the reality of the world is 'One Being' (as described in aletheia): an unchanging, ungenerated, indestructible whole.
Plato
In his Allegory of the Cave, Plato distinguishes between forms and ideas and imagines two distinct worlds : the sensible world and the intelligible world.
Hegel
In Hegel's philosophy of history, the expression Weltgeschichte ist Weltgericht (World History is a tribunal that judges the World) is used to assert the view that History is what judges men, their actions and their opinions. Science is born from the desire to transform the World in relation to Man; its final end is technical application.
Schopenhauer
The World as Will and Representation is the central work of Arthur Schopenhauer. Schopenhauer saw the human will as our one window to the world behind the representation; the Kantian thing-in-itself. He believed, therefore, that we could gain knowledge about the thing-in-itself, something Kant said was impossible, since the rest of the relationship between representation and thing-in-itself could be understood by analogy to the relationship between human will and human body.
Wittgenstein
Two definitions that were both put forward in the 1920s, however, suggest the range of available opinion. "The world is everything that is the case," wrote Ludwig Wittgenstein in his influential Tractatus Logico-Philosophicus, first published in 1922. This definition would serve as the basis of logical positivism, with its assumption that there is exactly one world, consisting of the totality of facts, regardless of the interpretations that individual people may make of them.
Heidegger
Martin Heidegger, meanwhile, argued that "the surrounding world is different for each of us, and notwithstanding that we move about in a common world".[9] The world, for Heidegger, was that into which we are always already "thrown" and with which we, as beings-in-the-world, must come to terms. His conception of "world disclosure" was most notably elaborated in his 1927 work Being and Time.
Freud
In response, Sigmund Freud proposed that we do not move about in a common world, but a common thought process. He believed that all the actions of a person are motivated by one thing: lust. This led to numerous theories about reactionary consciousness.
Other
Some philosophers, often inspired by David Lewis, argue that metaphysical concepts such as possibility, probability and necessity are best analyzed by comparing the world to a range of possible worlds; a view commonly known as modal realism.

Religion and mythology

Yggdrasil, a modern attempt to reconstruct the Norse world tree which connects the heavens, the world, and the underworld.
Mythological cosmologies often depict the world as centered around an axis mundi and delimited by a boundary such as a world ocean, a world serpent or similar. In some religions, worldliness (also called carnality[citation needed]) is that which relates to this world as opposed to other worlds or realms.

Buddhism

In Buddhism, the world means society, as distinct from the monastery. It refers to the material world, and to worldly gain such as wealth, reputation, jobs, and war. The spiritual world would be the path to enlightenment, and changes would be sought in what we could call the psychological realm.

Christianity

In Christianity, the term often connotes the concept of the fallen and corrupt world order of human society, in contrast to the World to Come. The world is frequently cited alongside the flesh and the Devil as a source of temptation that Christians should flee. Monks speak of striving to be "in this world, but not of this world"—as Jesus said, and the term "worldhood" has been distinguished from "monkhood", the former being the status of merchants, princes, and others who deal with "worldly" things.
This view is clearly expressed by king Alfred the Great of England (d. 899) in his famous Preface to the Cura Pastoralis:
"Therefore I command you to do as I believe you are willing to do, that you free yourself from worldly affairs (Old English: woruldðinga) as often as you can, so that wherever you can establish that wisdom that God gave you, you establish it. Consider what punishments befell us in this world when we neither loved wisdom at all ourselves, nor transmitted it to other men; we had the name alone that we were Christians, and very few had the practices."
Although Hebrew and Greek words meaning "world" are used in Scripture with the normal variety of senses, many examples of its use in this particular sense can be found in the teachings of Jesus according to the Gospel of John, e.g. 7:7, 8:23, 12:25, 14:17, 15:18-19, 17:6-25, 18:36. For contrast, a relatively newer concept is Catholic imagination.
Contemptus mundi is the name given to the recognition that the world, in all its vanity, is nothing more than a futile attempt to hide from God by stifling our desire for the good and the holy.[10] This view has been criticized as a "pastoral of fear" by modern historian Jean Delumeau.[11]
During the Second Vatican Council, there was a novel attempt to develop a positive theological view of the World, which is illustrated by the pastoral optimism of the constitutions Gaudium et spes, Lumen gentium, Unitatis redintegratio and Dignitatis humanae.

Eastern Christianity

In Eastern Christian monasticism or asceticism the world of mankind is driven by passions. Therefore the passions of the World are simply called "the world". Each of these passions are a link to the world of mankind or order of human society. Each of these passions must be overcome in order for a person to receive salvation (theosis). The process of theosis is a personal relationship with God. This understanding is taught within the works of ascetics like Evagrius Ponticus, and the most seminal ascetic works read most widely by Eastern Christians, the Philokalia and the Ladder of Divine Ascent (the works of Evagrius and John Climacus are also contained within the Philokalia). At the highest level of world transcendence is hesychasm which culminates into the Vision of God.

Orbis Catholicus

Orbis Catholicus is a Latin phrase meaning Catholic world, per the expression Urbi et Orbi, and refers to that area of Christendom under papal supremacy. It is somewhat similar to the phrases secular world, Jewish world and Islamic world.

welcome to my world poem


Welcome to my world
Won't you come on in
Miracles I guess
Still happen now and then
Step into my heart
Leave your cares behind
Welcome to my world
Built with you in mind
Knock and the door will open
Seek and you will find
Ask and you'll be given
The key to this world of mine
I'll be waiting here
With my arms unfurled
Waiting just for you
Welcome to my world

Knock and the door will open
Seek and you will find
Ask and you'll be given
The key to this world of mine
I'll be waiting here
With my arms unfurled
Waiting just for you
Welcome to my world
Waiting just for you
Welcome to my world