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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 are the properties which make mercury suitable for clinical thermometer?
Its a liquid at room temperature and it has a high rate of thermal expansion and contraction(changes volume with temperature).
Why is mercury in a thermometer instead of colored water?
Because mercury has properties in it that react to temperature, but coloured water would just stay at the same level the whole time.
How does a forehead thermometer work?
place on forehead for 4 minuites and you should get a accurate reading.
Can mercury and alcohol mixed to become a thermometer?
Mercury and alcohol are not the thermometers but the liquids found in the thermometer they have different properties that make them uniqe for example alcohol is safe while mercury is poisonous,alcohol does not expand uniformly but has great expansion while mercury expands uniformly and has low expansion,alcohol is cheap while mercury is expensive,alcohol wets the glass while mercury does not.so alcohol can not combine to form a thermometer simply because they are the liquids found in it and not the thermometer itself.
What is the Physical properties of a resistance thermometer?
What is the physical properties of a resistance thermometer
What a properties of wall thermometer?
It shows temperature on a large, easily read, scale.
What makes a thermometer?
what are the sulfide mineral used to a thermometer
Which poisonous metal was once used in thermometer due to its properties of expansion in heat?
Mercury.
How many syllables does the word thermometer?
4
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 are the four kinds of thermomether?
1. Alcohol or spirit thermometer 2. Mercury thermometer 3. Liquid crystal thermometer 4. Quartz thermometer 5. Reversing thermometer 6. Resistance thermometer
How often should a thermometer be calibrated?
Every 4 Years Every 4 Years
Desirable properities in a mercury thermometer?
The two properties you would want in a mercury thermometer are accuracy and precision. Accuracy is important because you want to know that it is recording the right temperature, and precision is important because it allows you to know the exact temperature to the extent of the gradations of that thermometer. Cherry flavor would be nice too! :)
What are the properties of a square that are not properties of a rhombus?
A square has 4 congruent sides and 4 congruent angles
5 properties of silicon are?
Thermal properties, 3. Wafer Flats. 4. Electrical properties, 4. Cleaving. - Resistivity & Mobility Calculator, 5. Silicon etching. 5. Mechanical properties
What are the properties which make mercury suitable for clinical thermometer?
Its a liquid at room temperature and it has a high rate of thermal expansion and contraction(changes volume with temperature).
