Measuring Temperature, Conductivity & Solubility: Lesson for Kids

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  • 0:04 Measuring Temperature
  • 1:32 Measuring Conductivity
  • 2:22 Measuring Solubility
  • 3:26 Lesson Summary
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Lesson Transcript
Instructor: Tiffany Hightower

Tiffany is a certified elementary school teacher. She has a B.A. in English, education certification and a master's degree in education from Central Michigan University.

Objects can be measured based on their temperature, conductivity and solubility. In this lesson, you will learn about interesting ways to measure these properties in objects that you probably see every day.

Measuring Temperature

Have you ever heard a weatherperson say that 'the mercury is rising' and wonder what he or she meant? Well, the weatherperson was referring to increasing temperatures and the rising mercury in a thermometer.

If you've ever taken a close look at a non-digital thermometer, you probably noticed a thin line of a red substance inside of it. This substance may be mercury or alcohol, and it goes up or down inside of a thermometer based on the temperature of objects or matter.

There is a scientific explanation for this. Mercury or alcohol expands, or spreads out, as the temperature increases, which causes it to rise in the thermometer. Mercury also contracts, or gets smaller, as the temperature decreases, which causes it to move lower on a thermometer.

Thermometers have various names to indicate the temperature based on the part of the world you're in, or if you're a scientist. When you watch the news in the United States, the temperature is given in terms of degrees Fahrenheit. However, if you travel in Europe or other parts of the world, weatherpersons will describe the temperature as degrees Celsius. A scientist conducting experiments in a lab may use another term to describe temperature, called Kelvin.

Temperatures are used to describe the freezing points and a boiling points of material, which are represented by different numbers of measurement on the Fahrenheit, Celsius, or Kelvin scales.

Measuring Conductivity

Have you ever noticed that pots used to cook food on a stove are usually made of some type of metal, such as aluminum? This has something to do with conductivity. Metals such as aluminum are good conductors, which means that heat can easily be transferred and moved through them. This is why they make great materials for cooking because they can get very hot and won't melt.

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