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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