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After the thermometer has come into thermal equilibrium with the object being measured, the top level of the liquid (Mercury or alcohol thermometer) is the temperature. The indicators will often also be colored red on mechanical (coil expansion) thermometers.
Digital thermometers should be "locked" at the recorded temperature if the probe is to be removed before viewing, as it may heat or cool even during a very short interval.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoMercury(or what ever is in the thermometer) expands when it is heated up causing it to move up, and contracts when it is cooled down causing the fluid to move down the tube.
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Why is it necessary to warm the thermometer before placing it into the solutions?
The thermometer reading will change from reading the solution temperature.
How long does it take for a thermometer to reach the same temp as its surroundings?
Generally, you must leave a thermometer in your mouth approximately three minutes to get an accurate reading.
Why is it best to take temperature readings in the shade?
A thermometer is not kept in direct sunlight because the temperature needed to be recorded by the thermometer is of the air and not the rays of the sun.
What effect does the use of an uncalibrated thermometer have on the boiling point of a liquid?
The thermometer's reading of the point the liquid boils may not be accurate.
Define vapor pressure thermometer?
A thermometer which utilizes a gas(vapor) to react to temperature changes for an accurate reading. (Instead of a hazardous material such as a mercury filled thermometer.)
How long does it really take to get a reading on an instant meat thermometer?
As long as your meat thermometer is calibrated correctly, it should only take about 2-5 seconds to get a reading.
Why is it advised not to hold the thermometer by its bulb while reading it?
The temperature of your hand affects the reading of the thermometer.
Why is it necessary to warm the thermometer before placing it into the solutions?
The thermometer reading will change from reading the solution temperature.
How long does it take for a thermometer to reach the same temp as its surroundings?
Generally, you must leave a thermometer in your mouth approximately three minutes to get an accurate reading.
Why must you read the temperature without removing the thermometer from the solution?
The thermometer reading will change from reading the solution temperature.
How would a temperature reading would be different if the thermometer were over unshaded asphalt?
how would a temperature reading be different if the thermometer were over unshaded asphalt
Why is it inappropriate to stir a liquid with a thermometer?
Because that will mess with the temperature reading on the thermometer. And it would be dangerous if the thermometer is broken as there are dangerous chemicals (i.e.mercury) inside.
Is a rectal thermometer reading of 101 degrees equal to an oral thermometer reading of 101degrees?
No. Usually there is about a degree difference with the rectal temperature being about 1 degree higher.
Why is it best to take temperature readings in the shade?
A thermometer is not kept in direct sunlight because the temperature needed to be recorded by the thermometer is of the air and not the rays of the sun.
Why should you leave the thermometer in the liquid while you are measuring its temperature?
The reading is not accurate if it is not in the liquid that you are measuring. Once you take it out, the temperature will be measuring the air.
How much temperature has to raise to get a reading?
It depends on the thermometer that you are using.
At what temperature will a Fahrenheit thermometer give a reading that is twice that on the celsius thermometer?
A Fahrenheit thermometer will give a reading that is twice that of a Celsius thermometer at -40 degrees, as this is the point where the two temperature scales intersect.
