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Difference between Planet and Satellite The main difference between a planet and a moon is that the planet is a celestial sphere in which a star or stellar debris orbits directly. A satellite is a man-made object placed in orbit. Planet Satellite By modern definitions, any celestial body orbiting a star can be classified as a planet. Natural and artificial moons orbit planets or other relatively large celestial bodies. The planet’s axis is bent at an angle to the equatorial plane of its star. This causes the amount of light received in the hemisphere to vary during the period of its rotation. It is believed that satellites orbiting planets in circular orbits are believed to have formed from a collision between two celestial bodies. The word “planet” is derived from the Greek word, that is “planon”. The word ‘satellite’ is derived from the Latin word ‘satellites’, which means ‘follow’ or ‘participate’. Planets revolve around invisible axes around their centers. Most of the planets in th

What is a pulley  A pulley is a wheel with a flexible rope, cord, cable, chain, or belt that runs along its edge. Dots can be utilised alone or in groups to impart energy and movement. Bundles are the patches around the waist. The points are coupled to the shaft on its axis in the belt drive, and power is delivered between the shafts by an infinite belt that runs through the points. A pulley is a mechanical device that makes it easier to lift heavy objects. The dots have a rotating wheel on an axle, which is connected to the centre of the wheel by a rope, cable, or chain. Fixed, moving, and compound spots are the three major types of spots.  A fixed point's wheel and axle are fixed in place, and the best example of one is a flag pole: as you pull down on the rope, the force is redirected via the point, and you lift the flag up.  Use of Pulley Use of pulley infographic The pulley's initial purpose was to make lifting large objects simpler. A spot is a basic machine consisting of

Solid Shapes Definition Solids, or three-dimensional forms, are shapes that exist in space. Solid shapes are three-dimensional figures with length, breadth, and height. A ball is a spherical, or three-dimensional structure, whereas a circle drawn on paper is a two-dimensional object. Solid shapes, such as tables, seats, notepads, and pencils, are also everywhere. Here are some solid form instances and characteristics. Click to know about Solid - Properties and Types  Solid Formula List (Formula list for Solid Shapes in Maths) Now that we know about the properties of all these solids, let’s also make a note of all its perimeters and areas. Shape (solid shapes name) Volume Total Surface Area Cuboid l × b × h 2 (lb + lh + hb) Cube a 3 6a 2 Sphere (4/3)πr 3 4πr 2 Cylinder πr 2 h 2πr(r + h) Cone (⅓)πr 2 h πr(r + l) Solving some problems with these formulas 1. Calculate the surface area and volume of a cube where a side is 6 cm. Given that side, a = 8 cm Cube’s volume = a 3 Substituting the

Motion and Time class 7 extra questions Download class 7 science extra questions 1. Answer the following What is the S.I unit of measurement for speed. What is a pendulum bob’s resting position called? What is the posture of the body called when it does not alter in relation to its surroundings? Name a device that measures the vehicle’s speed. Name a device that measures a vehicle’s distance traveled. What is the amount of time it takes a pendulum to complete one oscillation called? What is a pendulum’s metallic ball called? Name the material in which the crystals vibrate at an extremely rapid and accurate pace. Name a timepiece that uses the shadow of a pointer cast by the sun on a graded plate to display the time.   2. State True/False: A speedometer is an instrument to measure a vehicle’s speed at a particular speed. The speed of a car is always uniform. The kilometer is the SI unit of distance. Speed is a vector quantity. The speed of light is always faster than sound. 3. Match the

What are the Security and Safety of Business Transactions? Class 11 Business Studies E-commerce-related security issues E-commerce has had certain issues that put the security and safety of business transactions in jeopardy. The following are the most significant issues: 1. Transactional Risk : The following are some of the most typical internet transactional risks: A) Order default - A merchant may claim that the consumer never placed the order. B) Defective delivery — Sometimes, things are delivered to the wrong address or to the buyer with goods that were not requested. C) Payment default — Sometimes the seller does not receive payment for the items provided, despite the fact that the consumer states that payment was made. To avoid these issues, the vendor must ensure that the buyer has submitted the necessary cookie information. Cookies are similar to caller ID on the phone in that they provide information such as the customer's name, address, past purchase history, and so on.

Worksheet for Class 6 Science - Light and Shadow 1. Complete the following sentences: 1. Fill in the blanks: The type of energy is._______  Light always follows a ________ path. The phenomena of seeing ourselves in the mirror is known as ._______  ________ materials include things like butter paper. 2. Give True/False answers: Luminous objects can be artificial or natural light sources. A shadow is generated when light is blocked by an object. Items that are opaque allow light to pass completely through them. We appear to be the same size, shape, and colour when we glance in the mirror. 3. Match the following: “A”                 “B” Sun, Stars Moon and all planets Mirror       Lanterns, candles, bulb non-luminous objects Clear images Shadows           Always black Luminous objects Natural sources of light 4. What are the characteristics of images? 5. Discuss Transparent, opaque, and translucent objects. Click for the answer of the Light Shadows and Reflection Class 6 works

How does nuclear Energy Affect the Environment? Nuclear energy has been proposed as a solution to the requirement for a sustainable energy source that does not produce CO2. Nuclear power is not a renewable energy source by definition. The environmental implications of nuclear energy raise important concerns that must be addressed, particularly before any further nuclear power facilities are built. Carbon Dioxide : Because nuclear power plants do not emit carbon dioxide, it has been dubbed a "clean" form of energy. While this is correct, it is also misleading. Although nuclear power plants do not emit carbon dioxide while in operation, large amounts of carbon dioxide are released during the construction and operation of the plants. Uranium is used as a fuel in nuclear power reactors. Uranium mining emits a significant amount of carbon dioxide into the atmosphere. When new nuclear power facilities are created, carbon dioxide is also emitted into the atmosphere. Finally, the tr

Worksheet for Class 6 Science -  Electricity And Circuits 1. Fill in the blanks: __________ is the device used to break an electric circuit. There are __________ terminals in an electric cell. An electric bulb has a ___________ that is connected to its terminals. __________ is two (or more) cells combination.   2. State True/False: The bulb is the source of electricity in an electric circuit. A sheet of thermocol may carry an electric current. Paper is an excellent electrical conductor. Metals allow electric current to pass through them. In place of metal wires, circuit may be created with a jute thread.   Match the following: ‘A’ ‘B’ Battery Electricity cannot pass through it. Switch Either completes or breaks the circuit Circuit Converts electricity into light Filament Electricity can pass through it   Bulb Is a path of electricity Conductor A combination of cells Cell Glows when electricity passes  in it Insulator A device that produces electricity 4. Define a circuit. Draw the labe

Biodiversity , often known as biological diversity, refers to the diversity of living things on the planet. It explains the degree to which life varies. Microorganisms, plants, animals, and ecosystems such as coral reefs, forests, rainforests, and deserts are all  examples of biological diversity . Importance of Biodiversity Biodiversity benefits the Earth in a multitude of ways. The following are some examples: Ecological stability is provided through biodiversity. Within an ecosystem, each species serves a certain purpose. Organisms capture and store energy from the sun (the Earth's sole source of energy), produce organic material and destroy organic stuff. Biodiversity aids the water and nutrient cycle throughout the ecosystem, reduces soil erosion, and aids in the fixation of atmospheric gases so that they can be used by various organisms. Biodiversity regulates the climate. A healthy ecosystem supports the production of products and services that humans require to survive. The

Differences between Gonds and Ahoms - NCERT Class 7 History The following are the differences between Ahoms and Gonds : 1. Ahoms were migrants from Myanmar and China's Yunnan Province who came to the Brahmaputra Valley. They were descendants of the Tai-Mongoloid people. On the other hand, the Gonds were not immigrants to the area. They lived in Gondwana, a massive continent covered in forests. 2. The Ahoms established their power by warring against various tribes' kingdoms. The Rajputs influenced the Gonds, and the Rajputs influenced the Gonds. They formed marriage connections with Rajputs in order to obtain authority and recognition. The Ahoms spoke an Assamese dialect. 3. The Gonds, on the other hand, spoke Gondi, which is a Telugu-like language. They spoke in a Dravidian dialect as well. 4. Following their conversion to Hinduism, the Ahoms began to worship Hindu gods rather than their tribal gods. On the other side, the Gonds practised both clan worship and Lord Shiva devoti

What is the Right to Education (RTE)? Following the 86th Amendment to the Constitution in 2002, the right to education was incorporated in Article 21A of the new Constitution. For a long time, it has been necessary to assert that obligatory and compulsory education is a fundamental entitlement for all children aged 6 to 14. This is a critical step toward illiteracy in the country. This addition was worthless because it could not be implemented until the Right to Education Act was passed by Parliament in 2009. The goal of this regulation is to ensure that every child in India between the ages of 6 and 14 years old attends school. He has the right to a good education. Every child has a fundamental right to education between the ages of 6 and 14. This statute establishes basic requirements in primary schools. It asks that 25% of all seats in all schools be designated for students from low-income families. The government then compensates you. It forbids all non-accredited schools from oper

Birsa Munda History Birsa Munda (also called as Birsa Bhagwan by his devotees) was born on November 15, 1875, in Bamba, a Ranchi suburb (Jharkhand) . He followed in his brother's footsteps by claiming Christianity. He was thereafter initiated into Vaishnavism in Bandgaon. He abstained from meat, revered the tulsi plant, and wore the holy thread and a turmeric-dyed dhoti, like a conventional Vaishnavite would. He finally returned to his forefathers' religion, forming the 'Birsait' cult, which emphasised prayers, faith in God, obedience to a code of conduct, abstention from alcohol and sacrifices, among other things. Birsa received his elementary education at a German Mission School in Burjee. Until he reached the upper primary stage, he was a member of the Sardar Movement. Until 1895, Birsa was a religious reformer and a fighter for the raiyats' forest and other rights, but he eventually wanted political independence for the region. As a result, he recruited voluntee

What was the immediate cause of the revolt of 1857? Immediate Reason for the 1857 Rebellion The immediate cause was the requirement to use the 'Enfield' weapon. Before being inserted into the pistol, the cartridge had to be chewed off. The cartridge was lubricated with either pig or cow fat, according to the Indian sepoys. It was offensive to Hindu and Muslim feelings. As a result, they were hesitant to use the "Enfield" weapon. The soldiers were furious at the British. As a result, this became a flashpoint. It is supposed to have sparked the 1857 Rebellion. What were the causes of the failure of the 1857 revolt? The Failure of the 1857 Rebellion The uprising failed to drive the British out of the country for various reasons. 1. Military Motives The British army had a better organisation. The troops were well-supplied. The insurgents were running out of supplies and ammo. 2. Ideological Motives All sections were devoid of participation (Princess and educated classes).

Historical Background and Discovery of Cell - Class 11 Biology Aristotle (384-322 B.C.) and Paracelsus, two ancient Greek philosophers, believed that the complex structure of animals and plants is made up of a few repeating elements. These were an organism's macroscopic structures, such as roots, leaves, and flowers for plants, and organs for animals. Conrad Gesner (1516-1565), a Swiss biologist, researched the structure of a kind of protists termed foraminifera after the introduction of magnifying lenses in 1558. The compound microscope, invented in 1590 by Francis Janssen and Zacharias Janssen, aided in the advancement of cell biology research. Marcello Malpighi (1628-1694), an Italian microanatomist, examined thin slices of animal tissues from organs such as the brain, kidney, spleen, and lungs, as well as plant tissues, and proposed that they were made up of structural units he called "utricles." Cell was coined by Robert Hooke (1635-1703), an English microscopist (c

Nervous System vs. Hormonal System  The nervous system helps us in speaking with the rest of the world while likewise controlling numerous interior elements of the body. The sensory system gets information, examinations it, and afterward starts reactions. The neurons aid signal transmission. Then again, hormones permeate the plasma layer of target cells and tie to a receptor protein in the cell's cytoplasm. This limiting gets rolling a fountain of cycles that outcome in the development of optional couriers. These auxiliary couriers cause a fountain of atomic cooperations that change the cell's physiological state. This interaction is likewise called signal transduction. Five differences between hormonal coordination and nervous coordination Nervous/ Sensory system Mechanism A deliberate exertion between the axons and dendrites is utilized to communicate the data. Nerve driving forces don't make a clear difference. It is comprised of nerve motivations that movement between t

10 Characteristics of Living Things Notes for Class 12 Cellular respiration allows animals to receive the energy that cells require to perform their jobs. Food is absorbed for energy, while waste is removed from the body. Birth, growth, reproduction, and death are the four stages of their life cycle. Living creatures include animals, birds, insects, and people. Converting, growing, reproducing, breathing, and transferring cells, DNA, and nourishment are all abilities that organisms possess. Scientists use these characteristics to distinguish natural elements from inorganic ones. DNA & CELLS Cells are the building blocks of all living things. Cells, which are arranged into groups such as organs, molecules, and other multicellular classifications, can reproduce, express themselves, and respond to particular stimuli, and are thus considered organisms by scientists. METABOLIC ACTIVITY He must ingest food and convert it into energy for his body in order to survive. All living creatures

Ultrasonic waves and Infrasonic waves soundCBSE Class 8 Science What is Infrasonic sound? Infrasonic sound is defined as a sound with a frequency of less than 20 Hz. The frequency of infrasonic sounds is below the range of human hearing ability. Infrasonic sound waves can be produced by earthquakes, thunder, and volcanic eruptions, for example. Elephants and whales can detect this sound, even if the human ear is incapable of hearing it. Elephants, whales, rhinos, and pigeons all use infrasound to communicate. What are Waves of ultrasonic sound? Ultrasonic sound is defined as sounds with a frequency of more than 20,000 hertz (cycles per second). The frequency of ultrasonic noises is higher beyond the range of human hearing ability to discriminate. The hearing range of dogs, cats, bats, and mice, for example, extends into the ultrasonic frequency region. They are able to detect wavelengths that humans are unable to detect. Ultrasound's Applications Ultrasound is also used to monitor

Organ Systems of the Human Body Grade 3 Science A great number of cells make up our body. Tissues refers to a group of cells. Organs and body parts are made up of different types of tissues that come together to form organs or body parts. There are five sensory organs in our body, as well as several additional organs. These organs function together as a team. An organ system is a group of organs that work together to perform one fundamental task for the body. An Organ System is made up of a number of organs that collaborate to perform the same task. In order for our body to operate effectively, these organ systems must work together. Organ Systems  Bones and joints make up the Skeletal System . It supports our bodies and helps us to move about. The skull protects the brain, the rib cage protects the heart and lungs, and the skeleton protects other vital organs. The Digestive System aids in the digestion of meals. The mouth, food pipe, stomach, intestines, and rectum are the organs of