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Greenhouse Effect. What happened? Why are you shivering? No sun rays. Before. I will go and check what happened. What happened? Now. Before. Sun. Earth. Greenhouse gases. Sun rays. The sun’s rays warm the earth. A part of the sun’s rays is absorbed by the earth. A part of the sun’s rays is reflected back

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Magnetism. A magnet is an object or device that produces a magnetic field. Magnet attracts objects made of nickel, iron and cobalt. A magnet has 2 poles, the North Pole and the South Pole. Attack. Opposite poles of two magnets always attract each other. Repel. Like poles of two magnets always repel each other. Repel.

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Potential and Kinetic Energy. The law of conservation of energy. Energy cannot be created. Energy cannot be destroyed. It can only be converted from one form to another. Conversion of Energy. Solar Energy. Electrical Energy. Mechanical Energy. Potential Energy. Energy due to position. Potential Energy. Kinetic Energy. due to motion. The unit of energy is

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Solution, Suspension and Colloid. After sometime. Let us understand this with the help of an activity. Take some water in 3 separate beakers. Sugar. Lemonade. Add sugar in the 1st beaker. Lemon? Add chalk powder in the 2nd beaker. Add milk in the 3rd beaker. Stir all the mixtures. Direct a beam of light through

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Photosynthesis. Do you know how plants make their own food? Plants prepare their own food by a process called photosynthesis. Photo is the Greek word for light and synthesis is the Greek word for putting together. Plants need sunlight, carbon dioxide from air and water from soil to prepare their own food. Photosynthesis takes place

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SucceedSchool.com. Learn to Succeed. Terminal Velocity. Terminal velocity is the maximum velocity a falling object can reache. Friction, usually in the form of air resistance, opposes its weight. We can also get terminal velocities as an object falls through any fluid other than air, with lower terminal velocities for more viscous fluid such as water,

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SucceedSchool.com. Learn to Succeed. Kinetic Energy is movement energy and can be calculated as 1/2 times mass times the square of the velocity. KE equals 1/2 m v squared. Because the kinetic energy is proportional to the square of the velocity, tiny changes to the velocity can have a big effect, making fast moving objects

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SucceedSchool.com, learn to succeed. Acceleration. The rate of change of velocity of an object is called acceleration. To calculate it we first need to know how much that velocity has changed. Sometimes we represent this as delta v and sometimes as v minus u. They both mean the same thing; subtract the start velocity from

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SucceedSchool.com. Learn To Succeed. Forces. A force is a push or a pull which acts upon a mass and is caused by an object with mass. This is usually, though not always, another object. Contact forces are where two objects are touching and include friction, air resistance (which is really a type of friction), tension,

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Covalent Bonding. Who are you? Hi. I am noble gas neon. Noble gases have complete outer electron shells, which make them stable. I am Mr. Smart. Hey, do you want to form a bond? Let’s form a bond. No, I have complete outer electron shells. Hey, I will bond with you. In order to get

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