As the Scientists have no concrete proof for how exactly Earth was formed, but they strongly think that it was a swirl of gas and dust some 4.6 billion years ago spreading around 15 billion miles in space.
Astrologers and scientists believe that all the particles of dust and gas began to aggregate and started to form molecules and particles. 99.9 % of it was used up in forming the Sun.
The remaining 0.1% started to form large chunks of matter due to electrostatic forces. These chunks of matter combined on further collisions and grew large to form planets, satellites, asteroids, etc. This took 200 million years.
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Many Scientists came up with their own theories till the time when Newton proposed that Earth's interior is made up of much denser material. The Density of the inner Earth is twice as that of the rocks on the surface of the Earth. This density reveals the cause for the formation of different layers inside the Earth.
The interior of the Earth is like a layered onion, with three main shells namely, Crust, Mantle and Core. Each layer is further divided in to two parts. The two parts of crust are namely, Oceanic crust and continental crust. Similarly the two parts of mantle are named as Upper Mantle and Lower Mantle. Finally the two parts of the Core are named as Upper Core and Lower Core.
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The only planet that supports life (as per the present knowledge of humans) is the Earth. The life supporting zone of the Earth is very small compared to the vast Universe. It is from the bottom of the ocean bed to the top of the highest mountain. Less than 0.5% is of the space available for human habituation, as we can’t like under extreme hot or cold conditions.
We humans live on just 12% of the total land area and only 4% of the whole surface area, but still Earth is the only planet that can sustain life in the entire solar system. Scientists discovered 70 planets beyond the solar system, but the expected number is around ten billion trillion.
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http://www.wonderwhizkids.com/index.php/earth-supports-life
E–learning is an basically a term generally used to refer to computer–enhanced learning, although it is often extended to include the use of mobile technologies such as Personal Digital Assistants and MP3 players. It may include the use of web–based teaching materials and hypermedia in general, multimedia CD–ROMs or web sites, discussion boards, collaborative software, e–mail, blogs, wikis, text chat, computer aided assessment, educational animation, simulations, games, learning management software, electronic voting systems and more, with possibly a combination of different methods being used.
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http://www.wonderwhizkids.com/index.php/e-learning
One of the most commonly asked questions at Dolphin encounters is: How do you train the dolphins? In technical terms, we can train animals with a system of positive reinforcement through operant conditioning (Operant conditioning is one of the fundamental concepts in behavioral psychology). In simpler terms, we can break down the steps of each behavior and train them one at a time. Trainers teach each step by having the dolphin follow an object we call a target.
Some animals are born with instinctive behaviors that help them survive. Play is an important aspect of learning new behaviors. For example, some animals learn hunting or defensive behaviors through play with siblings. Even in humans, play is an important aspect of learning. And dolphin's are no exception
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Dwarf planets are the ones which are very small to be considered as planets. Recently there was lot of discussion on the planet Pluto, for assigning a status of a dwarf planet.The ninth planet of the solar system, Pluto, was classified as "dwarf planet" along with four other bodies (Eris, Ceres, Make‐make and Haumea) which are smaller than the Earth's moon. This Pluto is the second largest Dwarf Planet. Volume of Pluto is one‐third of the volume of the Earth's moon and its mass is only one‐sixth when compared to the Earth's moon. The radio waves traveling with the speed of light could take approximately 4 hours to reach the Pluto when sent from Earth and it would take the same time to reach back.
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http://www.wonderwhizkids.com/index.php/dwarf-planets
One of the most frequently asked questions about nucleic acids is: What is the main difference between DNA and RNA and chemically how they both differ from each other? Nucleic Acids are the organic compounds found in the chromosomes of living cells and in viruses. These are mainly two types of nucleic acids, which differ slightly in their chemical composition.
Deoxyribonucleic acid (abbreviated DNA) ordinarily occurs only in the cell nucleus, which have nucleotides A, T, G, C, whereas in Ribonucleic acid (abbreviated RNA) is found both in the nucleus and in the cytoplasm and consists of A, U, G, C nucleotides. (where Thymine is replaced by Uracil in RNA). Thus, DNA and its chemical cousin RNA are unique in their ability to encode information and to pass it on through heredity.
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http://www.wonderwhizkids.com/index.php/dna-vs-rna
