"Photography is a major force in explaining man to man."Edward Steichen
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Cable TV and Satellite TV - which is better?
Cable TV and satellite TV - which is the better system? There's a battle going on between Cable TV and Satellite TV. Today, consumers have a choice between conventional cable TV, digital cable TV, and all-digital satellite TV. Do you want to know which of ...
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Drought is usually talked about as single event. In reality, there are two types of drought: agricultural and hydrologic. Drought is further defined by its duration. The earth's water or hydrologic cycle is a closed system, meaning the water is never ...
Elvis left the building and moved in with me!
I’ve lived in some very strange homes. Funny thing is they were all pretty much what could be classed as your average suburban home. Some were new and others old. The common denominator was that odd things would happen in all of them. Years ago no matter ...
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A thermometer is an instrument that measures the temperature. Depending on what country you live in, temperature is measured either in a scale called Fahrenheit or Celsius (sometimes called Centigrade). There are thermometers for food, humans, and the weather. You can even make a thermometer yourself, it's simple.
Here's what you'll need: - Water (plain old tap water will do just fine for this experiment.) - Rubbing alcohol - 1 clear plastic bottle with a narrow neck - Food coloring in your choice of color - See-through plastic drinking straw - Modeling clay.
Pour equal parts of the water and alcohol and a couple of drops of food coloring into the bottle (the liquid should only fill up about a quarter of the bottle.) and give it a shake to mix. Drop the straw into the bottle (it should touch the bottom) and plug the opening with the clay. That's all there is to it. Now it's time to make sure your thermometer works. What happens when you place it in direct sunlight and the liquid becomes warmer?
If your thermometer works properly, the colored liquid will rise up through the straw. In fact, if the liquid were to become extremely hot, the liquid would most likely come out the top of the straw.
Bring your thermometer outside with you, how does the colored water react inside the straw? Does it go up or down? Run it under warm water and then cold, the colored water will react accordingly. Of course this isn't an accurate measure of water temperature, and there's no way of telling how hot or cold the water actually is, but this should give you some idea of how a thermometer works.
Making a thermometer is a great rainy day craft for kids. It's easy, quick and in most cases involves items found around the house. Why not make it your next project?
About the author:
James Hunt has spent 15 years as a professional writer and researcher covering stories that cover a whole spectrum of interest. Read more at www.thermometers-cent ral.info
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