There is a lot of hate and dishonesty in the world. Too many of us just watch from a distance, without caring what goes on around us. What if we actually took the time to look, even for a single day? How many people might be spared? How many people could no longer feel so isolated? We are all familiar with the children who have lunch alone or who never sit with a buddy in class. Some of us have gotten to the point where we dismiss those kids—the “geeks” and the “losers”—without thinking twice. We’ve gone so far as to defend ignoring them. “It’s not my problem,” “They could change if they wanted,” “They like being by themselves anyway,” and “They’re just freaks, that’s how they like it.” At some point, we’ve all said one of those things. I know I’ve said such things, maybe hundreds of times, so I’m not saying I haven’t. Why is the question. It would be so easy to simply say hello or that someone looks great as you walk up to them. Why don’t we, then? For me? I’m terrified. Now that I say this to myself, it seems absurd. It’s definitely not reasonable or even very justified. The majority of our justifications aren’t. When we choose to, though, we can come up with a lot of justifications and reasons not to speak with someone. “What do you think people would think?” What happens if they take offense? “I doubt that I would actually take any action to assist.” We allow these justifications and affirmations to creep into our thoughts in an attempt to make ourselves feel better about doing nothing. I wrote this largely for myself, to remind myself of my thoughts on the matter and to bring things back into perspective. I don’t mean to come across as a hypocrite. I’m not even close to being an expert at these things, let alone barely making progress. I aim to remind others as well, speaking from personal experience. It’s simple to be mean. On the other hand, being kind can sometimes be the most difficult thing in the world.
What is a miracle in the world?
When we deal with the whole question of “miracles,” We enter the field of religious belief. For example, we can simply say that a miracle is an event that is supernatural.
But what does that mean? We have to define a miracle further by saying it is an event that seems to go against the established laws of nature-as a direct result of divine intervention. Or it happened because certain laws are operating which we, as humans, cannot understand. But since for God all law is natural, nothing is accidental or against God’s will or permission.
So, from the religious point of view, a miracle is an event which makes us aware of the power, the presence, or the purpose of God. Many such miracles are described in both the Old Testament and the New. Miracles have also been reported from all ages and all parts of the world.
Did the miracles really happen? That is, did something supernatural take place? Religious authorities say that to understand the miracle stories, as they were understood by those who believed in them, we must forget about looking at things scientifically.
In other words, while a scientist may say: “Miracles do not happen”-and be right from the scientific point of view-it has nothing to do with the religious point of view. From the religious point, miracles are believed in not just on the basis of evidence but because of the meaning they have for those who accept them. To believe that certain “miracles” happened becomes an act of faith.
What is the Caste system in the world?
In n India there is a system that divides people into different social classes, or castes. The particular caste a person belongs to is the one he is born into.
The major castes, starting from the top, are: the Brahmans, the priestly caste; the Kashatriyas, the warriors and earthly rulers; the Vaisyas, the merchants and artisans; the Sudras, the servants; and the Panchamas, or outcasts. The Panchamas really belong to no caste and are known as “untouchables.”
An Indian born in a low-caste family cannot change his caste to a higher group by education or wealth. There are many rules about the kind of contact people of one caste can have with members of another caste. The caste system controls Indian society very strictly.
How did the caste system start? One theory is that when the Aryans came to Indian about 1500 B.C., they established it. The Aryans were tall, fair of skin, with thin noses and straight black hair. Their life was well organized into social groups, and the caste system enabled them to guard their standing as a ruling minority.
The Indian constitution prohibits discrimination on account of caste. But the caste system continues to flourish and it is believed probable that it will continue there for a long time.
The reason is that the caste system has existed in Indian for thousand of years, and it is also a kind of religious institution.
What is Etymology in the world?
The word “etymology,” comes from the Greek words etymon (“true”) and logos (“word”). So etymology is concerned with the first, true meanings of words. Etymologists study words to uncover the changes that have occurred in them.
There is a wide variety of ways in which the words we use originated and developed. Greek and Latin supplied most of the words used in English today. For example, from the Latin word manus (“hand”) we got the words manufacture, manicure, emancipate, and manipulate.
A Greek word, graphein (“to write”), gave us telegraph, “to write far away”; phonograph, “writing sound”; geography, “writing about the earth, “and so on.
Latin and Greek prefixes gave us many words. Anti (“against”) is used to make antiknock, antiseptic, etc. Astro (“star”) gave us many words. Anti (“against”) is used to make antiknock, antiseptic, etc. Astro (“star”) gave us astronaut. There are over one hundred common prefixes that were used in creating words.
English includes words borrowed from many other languages of the world. From the Vikings we got: leg, gate, freckle, seat, dirt, bull, birth, ugly, and many other words. The Normans introduced such words as prayer, ministry, parliament, poverty.
Later, as explorers ranged throughout the world, English obtained words from everywhere. From Indian we got bungalow, punch, faker, and coolies. From the Dutch came freight, schooner, scour, and landscape. From Spain and Latin America came armada, potato, cargo, tobacco, and hurricane.
It is impossible in a short article to give even an idea of all the sources of words that today make up the English language. An etymologist, who makes this his or her study, has certainly a big and interesting field of work!
What is ecology in the world?
Today we read and hear a great deal about “ecology,” and there is a good reason why this is so. Though ecology is one of the youngest of the sciences, it is one of the most important for the future of mankind.
Every living thing has its own way of life. The way of life depends partly on its own from and activities and partly on its environment (surroundings). Every organism (living thing) is affected by all that surrounds it—whether living or non-living. And in turn each organism has some effect on its surroundings. Each organism is part of a complex web of life.
At the same time, every organism lives as part of a community, or group, of other organisms. These organisms, too, make up part of the surroundings.
Therefore, when we study an animal or plant in its natural surroundings. We are really studying a web of life. A scientist who studies these webs of life is called an ecologist. His subject is ecology, which comes from two Greek words meaning “study of the home, or surrounding.”
Ecology studies the relations of living things to the world in which they live and tells us, among other things, how we can most effectively use and conserve our resources. It deals with such things as: How can we make the best use of our land? How can we save our soil, our forests, our wild life? How can we reduce the great losses caused by harmful insects? These are examples of the practical questions the ecologist asks and tries to answer.
Scientists believe that when life first began on earth more two billion years ago, the only plant life was in the sea. The land was bare and lifeless.
Then, about 425,000,000 years ago, a few small green plants appeared on land. They probably developed from certain kinds of green sea weeds (algae). The first land plants looked very much like the mosses, liverworts, and hornworts you can see growing in damp, shady places.
About 400,000,000 years ago more complicated plants existed. These resembled modern ferns, horsetails, and club mosses. Ferns were the first plants to have roots, stems, and leaves.
By the time the first dinosaurs walked the earth, vast forests of seed ferns, ginkgoes, cycads, and cordaitales stretched across the land. These were the first trees to reproduce by means of seeds.
Pines and other conifers (cone-bearing trees) developed somewhat later, 300,000,000 years ago. This group includes many familiar trees, such as pines, firs, spruces, cedars, hemlocks, and redwoods. All of these trees bear their seeds on cones.
The first flowering plants developed about 150,000,000 years ago. Their well-protected seeds gave them a great advantage over plants with more exposed seeds, and they increased in numbers and kinds. Today flowering plants are found almost everywhere.
How can scientists know what the sun is made of?
We know that the sun is a great ball of hot gases, made up of many layers of hot gases. But how do we know this, or any of the other things that make up the sun?
Astronomers have obtained many of their facts about the sun by using special instruments. Some of these instruments are the spectroscope, spectrograph, spectroheliograph, coronagraph, radio telescope, and space probe.
The spectroscope is used to study the glowing gases of the sun. It enables them to tell what chemical produced the colors in the light from the sun. The spectrograph enables astronomers to see how different substances are distributed on the sun. And when this instrument has photographic equipment attached, it is called a spectroheliograph.
A coronagraph is a special kind of Telescope. With a coronagraph astronomers can photograph the sun’s corona without having to wait for an eclipse of the sun. A radio telescope enable scientists to study radio waves that are emitted by the sun.
Because the earth’s atmosphere stops many of the sun’s radiations from reaching the earth, scientists send instruments high up into the atmosphere. Such space probes help them learn more about the sun. While the technical ways in which all these instruments work have not been explained here, you can see that scientists do have instruments that enable them to learn a great deal about the sun.
Can sound travel through water?
All sounds are produced by very fast, back-and-forth motions called vibrations. Vibrations are the source of all sounds.
Sound travels from a vibrating object to your ear by means of a medium, or sound carrier. The medium may be a solid, a liquid, or a gas.
Sound travels from a vibrating object to your ear by means of compression waves in the air. The vibrating object pushes against the tiny particles of air next to it and the particles are compressed, or squeezed, together. As it moves back, it leaves a space with fewer particles in it. The thinned-out air is called an expansion. Sound waves are made up of such compressions and expansions of air.
Not only does sound travel through water in this way, but it travels about four times as fast in water as it does in air. Sound travels through air at a speed of about 335 meters a second. Sound travels in sea water at about 1,463 meters a second.
The fact that sound travels through water is very useful to man. Ships and submarines are equipped with sonic devices for finding depth or for discovering the direction and distance of other vessels or of rocks.
By sending out a sudden pulse of sound from an underwater loudspeaker and finding the time it takes for the sound to return as an echo from the bottom of the sea, one can know the depth of the water beneath a vessel.
By sending out sound pulses horizontally and listening for echoes. One can detect other vessels or submerged rocks. The direction in which they lie and the distance can also be determined.
What is an earthquake belt?
Earthquakes are trembling’s or vibrations of the earth’s surface. The real cause of earthquakes is usually a “fault” in the rocks of the earth’s crust –a break along which one rock mass has rubbed on another with very great force and friction.
Because of this, earthquakes do not occur in all parts of the world. They are confined to certain definite areas, which are called “belts.” The most important belt is the rim of the Pacific Ocean, where most of the world’s earthquakes have occurred.
This belt begins at the southern tip of Chile, reaches up the Pacific coast of South America to Central America (branching into the Caribbean), runs along the Mexican coast to California, and on to Alaska.
But that isn’t the end of it. The belt continues from Alaska to Kamchatka. Passing through the Kurile Islands and the Aleutian Islands, it stretches on to Japan, the Philippines, Indonesia, New Guinea, and through various South Pacific islands.
Most of the big earthquakes in history have taken place within the Pacific belt. However, another earthquake belt branches off from Japan. It runs through China, India, Iran, Turkey, Greece and the Mediterranean.
In some regions, such as Japan, earthquakes occur almost every day. Fortunately, most of these earthquakes are not severe and damage. On the other hand, in the New England states there have been no destructive earthquakes since the last Ice Age, many thousands of years ago.
What is a cloud?
Here is how clouds are formed. Warm air, laden with moisture, rises into the sky. When it gets to a certain height, the warm air cools. At the cooler temperatures it can no longer hold all its moisture in the form of water vapor. So, the extra moisture changes into small drops of water, or bits of ice, and this forms clouds.
No two clouds are exactly alike, and they are always changing their shape. The reason we have different types of clouds is that cloud formation takes place at different heights and temperatures. And clouds will be composed of different particles, depending on their height and temperature.
As the water vapor in the air changes back into a liquid (this is called condensation), it comes into contact with dust and other particles in the air. A droplet of liquid water forms around each tiny particle.
It takes about 100,000,000 droplets to from one large raindrop. And so it would takes about a million million droplets to make up a cloud 1 kilometer wide, 1 kelometer long and 1 kilometer deep. Such a cloud may have about 790 tonnes of water in droplet (liquid) from and nearly 7,940 tonnes of water in water-vapor (gas) form.
The water vapor condenses into droplets to form clouds around many kinds of particles. There are dust particles blown from deserts, dry topsoil, and volcanoes. There are tiny crystals of salt from the oceans, solid particles from the burning of coal, and many other kinds.
Why is gravity in space not the same as on earth?
Every object in the universe pulls on every object. This is called gravitation, or gravity. But the strength of that pull—of gravity—depends on two things.
First, it depends on how much matter a body contains. A body (object) that has a lot of matter has a lot of gravitation. A body contains. A body that has very little matter has very little gravitation. For example, the earth has more matter than the moon, so the earth’s pull of gravitation is stronger than the moon’s.
Secondly, the strength of gravitation depends on the distance between the bodies. It is strong between bodies far apart.
Now let’s take human being on earth. The earth has more matter than the human being, so its gravitation pulls him to the earth. But the earth behaves as if all its matter were at its center. The strength of gravity at any place, therefore, depends on the distance from the earth’s center.
The strength of gravity at the seashore is greater than at the top of a mountain. Now, suppose a human being goes some distance up into the air, away from the earth. The pull of the earth’s gravity will be even weaker.
When man goes out into space, he is away from the earth’s gravitational field. There is no pull on him. He is in a condition of weightlessness. And this is why, in rockets and space capsules, weightless astronauts and objects float about in the air.
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