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How do you tell how hot or cold something is?
use a thermometer.We can feel how hot or cold something is. However, sometimes things are just too hot or cold for us to feel safely. At other times we need to know exactly how hot or cold something is. When we need to measure temperature correctly we need to use an instrument called a thermometer. This measures temperature in degrees Celsius [sometimes called centigrade] or degrees Fahrenheit. There are different types of thermometers for different situations. A medical thermometer, for example, needs to be very accurate. It measures in fractions of degrees. When we are ill, even tiny changes in temperature are important. Some thermometers use a liquid that moves up a very fine glass tube. Most room thermometers, and outdoor thermometers are like this. The liquid is either mercury [ which is poisonous] or coloured alcohol. As liquids get warmer they expand [get bigger], and move up the tube. Water expands too, but not as much as alcohol and mercury. Thermometers that might be used by small children are not made of glass. They use a digital display which lights up the temperature. Inside the displays are chemicals that change colour according to the temperature.
What instrument measures how hot or cold something is?
A thermometer is an instrument that measures cold and heat, together with temperature variations.
Who is the inventor thermometer?
thermometer
What risks are associated with a tilt table test?
Risks of the tilt table test are low, but do include significant changes in blood pressure while in the supine position, and any adverse reactions to any drugs administered during the tilt table test.
What is a glass bulb of a thermometer?
thermometer
Regulations and risks associated with carrying children?
regulations and risks associated with carrying children
What are the risks associated to management information systems?
What are the risks associated to management information system
Risks associated with owning your own business?
what are some of the risks associated with owning your own business
Tell you about risks associated with future generali insurance?
please answer me risks associated with future generali insurance
What are the risks associated with a pelvic exam?
Other than minor discomfort, there are no risks associated with a routine pelvic examination.
Are there risks to vitamin treatment?
Few risks are associated with supervised vitamin treatment
What are the major risks associated with pancreas transplantation surgery?
Organ rejection, excessive bleeding, and infection are other major risks associated with this surgery.
What are the advantages of alcohol thermometer?
They are cheaper an they don't pose the same environmental risks when broken.
What are the risks of poor positioning to a client in a salon?
risks associated with poor client positioning
What are some risks associated with research that involves chance?
risk associated with research
What are the risks associated with the mortgage origination process?
what are the risk associated with mortgage orgination
Are There are costs associated with reducing risks.?
True
