Introduction to Physical Science: Energy and Fuels Energy is defined as the capacity or power to do work‚ such as the capacity to move an object (of a given mass) by the application of force. Energy can exist in a variety of forms‚ such as electrical‚ mechanical‚ chemical‚ thermal‚ or nuclear‚ and can be transformed from one form to another. It is measured by the amount of work done‚ usually in joules or watts. All known forms of energy can be converted from one form to another. The Law of Conservation
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Citronella Grass Oil as Mosquito Repellent ABSTRACT The study aims to produce oil economically available and accessible to the people. The study specifically focuses on using lemon grass or citronella grass or cymbopogon marginatus as a mosquito repellent in ointment. METHODOLOGY Materials * Citronella grass * concoction set (pot‚ water‚ stove‚) * container Procedure 1. Let the citronella grass dry. 2. Gather and prepare all your needed materials 3. Boil the dried
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hibernate through it. The wildlife that does stay in the Taiga during the winter have specialised adaptions including thick fur or feathers and the ability to change colour throughout the year..The Taiga inhabits huge amounts of insects hence birds migrate there to feed off these insects every year. Taiga forests are endangered due to logging and mining by humans. When trees are cut down it takes a very long time for them to regrow because due to the very short growing season there. Plants common to this
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order to beat other countries was so important that common sense was not present. Countries decided to forgo safety checks in order to make sure their products were more effective. As a result‚ many chemicals such as chorine‚ DDT (used as an insect repellant in the war) and PCB’s were released in society for commercial use. DDT in particular was linked to cancer and hurt wildlife in the
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health and irresistible. ! The cacao bean was founded by an ancient tribe called the Olmecs between the time of 1200 to 300 B.C. They were a tribe that inhabited the tropical lowlands of South America and would be the first to domesticate the plant and use the beans. The Olmec tribe would be responsible also for naming these bitter seeds that held secrets to power and health (Ziegler 400). ! Along would come the Mayans and Aztecs who would also become fond of the cacao bean. It would be used for physical
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Harvesting Cacao is Hard Work We tend to think of chocolate making as an assembly-line process. Most people picture automated presses plopping out candies onto conveyor belts at speeds unmatched by humans. But before cacao reaches the machinery of a chocolate factory‚ it must first pass through the hands of a farmer. Making chocolate takes years of manual labor. Like most agricultural crops‚ cacao must be closely monitored by farmers. They regularly walk their fields and check for pests‚
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a plant whose scientific name is theobroma cacao which means “food of the gods”. According to the historians‚ the Mayan in Central America is the first who learned to plant the cacao plants around 2.000 years ago. The Maya took the cacao trees from the rainforests and plant them around home. They cooked the cacao seeds then crushed them into a soft paste. They mixed the paste with water and flavorful spices to make an unsweetened chocolate drink. Cacao and chocolate were an important part of Maya
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are believed to be the first to grow cocoa beans as a domestic crop. Cacao trees have grown wild for possibly 10‚000 years. The Olmec civilization only lasted until about 300 B.C. In the 14th Century‚ cocoa became a drink that was popular for the upper class of the Aztecs; they called it “xocalati” meaning warm or bitter liquid. They were the first to tax the beans. In 1492‚ Christopher Columbus was said to have brought back cacao beans to King Ferdinand from his forth visit to the New World‚ but they
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confection made from cacao beans‚ the seeds of the cacao plant. There are a large number of products made from it on the market‚ from powdered cocoa for making drinks to white chocolate‚ and most markets carry a cross-section of confections for their customers. In addition to being available at general markets and grocery stores‚ chocolate can also be purchased from specialty companies which make luxury and distinctive confections. Making chocolate is a time consuming process. Cacao plants are grown
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CHOCOLATE Chocolate comes from the cacao bean‚ which comes from a cocoa tree‚ which are found in Central America. Mayans The Mayans found the cocoa trees down in South America‚ and then migrated up to Central America‚ where their empire stretched from the Yucatán Peninsula to the Pacific Coast of Guatemala. The Mayans are known for being the first people to create plantations‚ where they had people working on a cacao bean plantation. They also referred to the cacao bean as the “food of the gods.”
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