ELECTRICITY AND CIRCUITS | Study
Pre-Requisires Test & Enrich Electricity | Speed Notes Notes For Quick Recap Electric Circuit: Connecting wires, bulb, switch and electric cell is used in Torch, Battery, LED (Light Emitting Diode), etc. Electric current is carried by Conductor. Conductor: Materials that allow electic current to pass through them. All metals are good conductors of electricity. Carbon…
FUN WITH MAGNETS | Study
Pre-Requisires Test & Enrich FUN WITH MAGNETS | Speed Notes Notes For Quick Recap Magnets: Materials that attract iron, nickel and cobalt. Natural magnet is called Iodestone or magnetite. Magnetite is a natural magnet. Magnet attracts materials like iron, nickel, cobalt. These are called magnetic materials. Materials that are not attracted towards magnet are called…
AIR AROUND US | Study
Pre-Requisires Test & Enrich Air Around Us | Speed Notes Notes For Quick Recap Air: The invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen. The blanket of air that surround the earth is called atmosphere. Air is found everywhere. We cannot see air, but we can feel it. Air in…
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Motion and Time | Study
Pre-Requisires Test & Enrich Motion and Time | Speed Notes Notes For Quick Recap Motion: The action or process of moving or being moved. The distance moved by an object in a unit time is called its speed. Speed of objects help us to decide which one is moving faster than the other. The speed…
Electric Current and its Effects | Study
Pre-Requisires Test & Enrich Electric Current | Speed Notes Notes For Quick Recap Flow of electrons through a conductor. It is convenient to represent electric components by symbols. Using these, an electric circuit can be represented by a circuit diagram. When an electric current flows through a wire, the wire gets heated. It is the…
Light | Study
Pre-Requisires Test & Enrich Light | Speed Notes Notes For Quick Recap Light: It is the natural agent that stimulates sight and makes things visible. Light travels along straight line. Any polished or a shining surface acts as a mirror. An image which can be obtained on a screen is called a real image. (Scroll…
Forests: Our Lifeline | Study
Pre-Requisires Test & Enrich Forests: Our Lifeline | Speed Notes Notes For Quick Recap Forest: Large area of land thickly covered with trees, bushes, etc. We get various products from the forests around us. Forest is a system comprising various plants, animals and micro-organisms. In a forest, trees from the uppermost layer, followed by shrubs,…
Wastewater Story | Study
Pre-Requisires Test & Enrich Wastewater Story | Speed Notes Notes For Quick Recap Wastewater: Black-brown water which is rich in lather , mixed with oil that goes down the drains from skins, showers, toilets, laundries is called wastewater. sewage: Wastewater is generated in homes, industries, agricultural fields and in other human activities. This is called…
Transportation in Animals and Plants | Study
Pre-Requisires Test & Enrich Transportation in Animals and Plants | Speed Notes Notes For Quick Recap Transportation in animals: In most of the animals the blood that circulates in the body distributes food and oxygen to different cells of the body. It also carries waste products from different parts of the body for excretion. Circulatory…