Top 10 Science Experiments For Kids 7 - 12 (Volume 1)

Top 10 science experiments for kids 7 - 12 years old are described in a simple language that includes materials needed, steps involved, and a discussion on theories behind them. Kids would love to build a Juice Rocket, an Electric Motor, and an Elephant Toothpaste and several other exciting experiments. With some help from parents this book makes learning a lot of fun for kids. It offers a perfect family activity without the cost of a summer camp. Following is a complete list of top 10 science experiments from the book: PHYSICS Hovercraft, Solar Cooker, Electric Motor, Rubber-band Racer CHEMISTRY Lemon Batter, Juice Rocket, Elephant Toothpaste LIFE SCIENCES Germinator, Painting Flowers, Straw Pulse Meter Each of the top 10 experiments have following sections: 1. Goals 2. Description 3. Materials 4. Building Steps 5. Problem Solving 6. Discussion and a lot of images showing materials and building steps. Here is a sample Description for Electric Motor: Electric motors convert electrical energy into mechanical energy. In other words they use battery or A/C power to spin a shaft which can then be used to move wheels on cars and trains, lift weight for elevators and cranes, or spin CDs and DVDs for players. Motors have magnets with the same poles (north-north or south-south) positioned to repel each other. One of them is placed on a stationary part called "stator" and other one on the "rotor" which moves because stator's magnet repels it. It can only move in a circular motion making it spin. To make the rotor spin continuously stator has an electro-magnet instead of a permanent magnet. When electric current flows through its coil, it turns magnetic and repels the permanent magnet on the rotor making it move. And here is a sample Discussion from Juice Rocket: Lemon juice is an acid, and baking soda is a base. When the two ingredients are mixed together, they produce carbon dioxide gas. You can try acidic ingredients like vinegar, any citrus juice, sour cream, yogurt, or buttermilk with baking soda or baking powder. Often recipes that use baking soda will need another ingredient with acid to make the bubbles so the bread or cake rises. Baking powder is made up of baking soda with the right quantities of acidic salts and both react when heated or water is added. In this experiment you put the baking soda in a toilet paper pouch to slow down the mixing process which gives you some time to fix the cork and stand back. Here is the chemical formula: Lemon juice or vinegar is acetic acid: CH3COOH Baking soda is sodium bicarbonate: NaHCO3 Mixing the two is simply an acid base reaction: CH3COOH + NaHCO3 = CH3COONa + H2CO3 That last product is carbonic acid which quickly decomposes into carbon dioxide and water: H2CO3 = H2O + CO2 This book is written in a way to explain theory and formulas in plain English and to encourage curiosity. It will help young readers and parents learn science in a fun way and ignite a life long interest in all aspects of experiments.