A resource is any natural or artificial substance or energy which can be used for the benefits of mankind. Natural resources are those which exist in the environment naturally, that is, they are not created by humans. They are soil, water, sunlight, the wind, plants, coal etc.Natural resources are classified further into exhaustible and inexhaustible resources. Exhaustible resources are those which are limited and will be exhausted with continuous usage, for example, coal, natural gas etc. whereas inexhaustible resources are those which cannot be depleted by human consumption, for example, wind power and water power etc., Need for Conservation of ... Read More

Anger is the strong feeling of displeasure or annoyance. We often feel bad for being out of control due to anger but have no idea on how to control it. The reason we get angry can be because of many reasons but the root cause is usually something else like from a past situation.Anger is caused due to a certain event that happens to the person. The person feels that he is angry because of that particular event alone and no other factors are responsible for his rage. But the same event may not anger someone else. For example, you ... Read More

The Western Ghats is a mountain range that runs from the western coast of Peninsular India. Older than the Himalaya Mountains, they are also known as Sahyadri. It is recognized as a UNESCO World Heritage Site. It is one of the eight hotspots of biological diversity in the world due to its high level of biological diversity and endemism. It begins near the border of Gujarat and stretches down 1600 km through the states of Maharashtra, Karnataka, Kerala and Tamil Nadu covering around 160, 000 km2 of the area.TopographyThe Western Ghats traverses from Gujarat, extending from the Satpura Range and ... Read More

Charminar is a monument which was constructed in 1591, in Hyderabad, India. The literal translation of Charminar in English is 4 pillars. It is located on the east bank of the Musi River and is listed among the most recognized structures of India. There are many theories regarding the reason for the construction of Charminar but the commonly accepted theory is that it was built to celebrate the elimination of the Plague, which was widespread at that time.Charminar was built by Muhammad Quli Qutb Shah, the fifth ruler of the Qutb Shahi dynasty. After shifting his capital from Golkonda to ... Read More

The fishes that can survive without water for a good amount of time are known as amphibious fishes. Convergent evolution plays an important role in these species, as the next generation species receives analogous structures that have similar function but were not present in the last generation.Many fishes are amphibious, which means they can naturally survive out of the water. These fishes have developed limbs or use lateral undulation (that is, wave-like movement patterns that act to propel an animal forward) for terrestrial locomotion. They leave water bodies for many reasons like escaping predators, low oxygen environments etc.Ancient fish had ... Read More

Kanchenjunga National Park is a biosphere reserve located in Sikkim, India. Sikkim is known as the paradise of naturalists and is the second smallest state in India. The park gets its name from the mountain Kanchenjunga. Kanchenjunga National Park is recognized as a UNESCO world heritage site. The Park was established in 1977 and later expanded in 1997 to include the major mountains and the glaciers and additional lowland forests and it covers an area of 850 km2.TopographyThe Kanchenjunga Park is located in the North and West Sikkim districts. It is situated on high altitudes at an elevation of 6, ... Read More

A rocket can be an aircraft, spacecraft or a missile which is propelled by a rocket engine. A rocket engine works on the principle of Newton's Third law, that is, for every action, there is an equivalent and opposite reaction. Rocket propellant is the fuel which burns and produces thrust to propel the rocket.The propellants are usually fueled together with the oxidants. Oxidants are required to burn the fuel efficiently. Thus the chemical reaction in the combustion chamber produces the required energy for thrust.The propellant is burnt in a controlled manner in the combustion chamber of the rocket engine and ... Read More

Neptune is the coldest planet in the solar system as Pluto has been excluded as it was regarded as a dwarf planet. It is the eighth and farthest known planet from the Sun. It has 17 times the mass of Earth and is the fourth largest planet in the solar system. It takes 164.8 years for Neptune to finish one revolution around the sun and the elliptical orbit of Neptune is inclined 1.77° compared to that of Earth.Voyager 2 is the only spacecraft that visited Neptune. It analyzed Neptune's rotation, tilt, weather conditions and also its moons and ring systems.Physical ... Read More

Robonaut is a NASA robot, which is designed as a humanoid. The artificial intelligence makes it easier for Robonaut to do the same jobs as a human. Robonaut could help with anything from working on the International Space Station to exploring other worlds. The core idea behind the Robonaut series is to have a humanoid machine work alongside astronauts. Its form factor and dexterity are designed such that Robonaut can use space tools and work in similar environments suited to astronauts.These new space explorers won’t need space suits or oxygen to survive outside of the spacecraft. Thus they might help ... Read More

Both scramjet and Ramjet are types of jet engines. A ramjet is an air breathing jet engine which is usually associated with supersonic transport. Ramjets can start at supersonic speeds only, so as a result they cannot be started at zero velocity and cannot produce thrust as there is a lack of airspeed.Hence assisted take off flights or rockets are needed to or accelerate it to a supersonic speed from which it starts producing thrust. This makes ramjet engine to be efficient only at supersonic speeds as it can accelerate to speeds of about Mach 6. Ramjet has revolutionized Rocket ... Read More