How to Start a Fire Without Matches. Chemical Reaction Games For Kids & Learning About Combustion. In a chemical reaction a reactant is consumed during a reaction while a product is formed as a result. In this game two examples of chemical reactions are highlighted: combustion and gasification. In both cases a hydrocarbon (such as oil, coal or wood) and oxygen are the reactants, while the products vary depending on the process and amount of oxygen.
Any product of a chemical reaction that is not the intended product of the reaction is a by-product. In combustion processes, heat is the main intended product, and the chemical compounds that are produced are considered by-products. The by-products produced by combustion depend on the type of reaction and reactants present. There are two types of combustion: complete and incomplete. Complete combustion occurs when a hydrocarbon burns in high oxygen levels; the reaction will only yield carbon dioxide and water. Gasification converts hydrocarbons by reacting them at high temperatures with a controlled amount of oxygen and steam. Colorful Convection Currents.
Fill two bottles with warm water from the tap and the other two bottles with cold water. Use food coloring or the Fizzers coloring tablets to color the warm water yellow and the cold water blue. Each bottle must be filled to the brim with water. Hot over cold: Place the index card or old playing card over the mouth of one of the warm water bottles. Hold the card in place as you turn the bottle upside down and rest it on top of one of the cold water bottles. The bottles should be positioned so that they are mouth to mouth with the card separating the two liquids.
You may want to do this over a sink. If you are using our Split Demo Tank, follow these directions: Make sure that the tank divider is firmly in place. Hot air balloons rise because warm air is lighter than cold air. The movement of warm and cold water inside the bottles (or tank) is referred to as the convection current.
What are the results of temperature inversion? More Weather Experiments. The Science of Heat (Children's Encyclopedia of Science): 6. Rays of Warmth. Stand outside on a warm summer day and you can feel the Sun's heat on your face. But how does it reach you? There is nothing but 93 million miles of empty space between the Sun and the Earth. Heat can only travel by conduction or convection where there is matter. To cross empty space, it must move by a different means. The third method by which heat moves is called RADIATION. Heat radiation, like light, consists of waves.
Hat waves are also known as INFRARED waves. Heat Rays and Matter The amount of heat radiation soaked up by a substance depends on what type of substance it is. A material that reflects light like a mirror, such as metal foil, will also reflect most of the heat waves that strike it. A Trap for Sunlight Glass will let both light waves ad heat waves from the Sun pass easily through it. This is how a greenhouse works. The Earth: A Giant Greenhouse Some gases work like the glass in a greenhouse. Misconceptions About Temperature.
Insulation Experiment: Keep Your Body Warm. Ever wonder why your mom makes you wear two or three layers of clothing when you want to go outside and build a snowman? These clothes are actually great insulators, which mean they're made from materials that keep your body temperature from dropping. In this insulation experiment, you'll learn which fabrics help keep you warm on an icy winter day. Some weather conditions, such as rain, wind, and snow cause our bodies to lose heat. If you don't select the right materials to keep your body warm and toasty, you'll start to shiver from the cold. Problem: Which type of fabric insulates heat the best? Materials: 7 glasses of the same size and shape Water Thermometer Wool Cotton Denim Lace Fleece Nylon Kitchen timer Notebook and pencil Procedure: Before diving into the directions, think about the kinds of clothes you usually wear on a hot day: Are the fabrics heavy or light?
Results: Fabrics like wool and fleece are great insulators and will keep your body warm over an extended period of time. Why?