0
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
To take the reading of a thermometer, simply look at the level of the liquid (usually Mercury or colored alcohol) inside the tube. The number where the liquid stops is the current temperature. Make sure to read it at eye level for accuracy.
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.
Add your answer:
Earn +20 pts
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?
It typically takes a thermometer a few minutes to reach the same temperature as its surroundings. The exact time can vary based on factors such as the material of the thermometer, the size of the thermometer, and the temperature difference between the thermometer and its surroundings.
What are 4 different methods to take a temperature?
Oral method: placing a thermometer under the tongue. Axillary method: placing a thermometer in the armpit. Tympanic method: using an ear thermometer to measure temperature in the ear canal. Rectal method: inserting a thermometer into the rectum for a core body temperature reading.
When a thermometer is kept in the ice the reading shows?
Increases first and then decrease
How do you calculate the mercury rise in a thermometer?
To calculate the mercury rise in a thermometer, you need to subtract the initial temperature reading from the final temperature reading. The difference between these two readings represents the mercury rise in the thermometer. Make sure to use the units of measurement (usually degrees Celsius or Fahrenheit) in your calculation.
Why must a laboratory thermometer be left in place to take a reading?
A laboratory thermometer must be left in place to take a reading because the thermometer needs time to adjust and reach thermal equilibrium with the substance being measured. Moving the thermometer too soon can result in an inaccurate reading.
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 must a laboratory thermometer be left in one place to take a reading?
A laboratory thermometer must be left in one place to take a reading because the mercury or alcohol inside the thermometer needs time to reach thermal equilibrium with the substance being measured. Moving the thermometer while taking a reading can disrupt this process and result in an inaccurate measurement.
How do you take the temperature of a tennis ball?
You can take the temperature of a tennis ball by using a digital thermometer or an infrared thermometer. Simply point the thermometer at the ball and press the measurement button to get a reading of the ball's temperature.
Why is it necessary to warm the thermometer before placing it into the solutions?
The thermometer reading will change from reading the solution temperature.
Is a rectal thermometer reading of 101 degrees equal to an oral thermometer reading of 101degrees?
No, a rectal thermometer reading is typically about 0.5 to 1 degree Fahrenheit higher than an oral thermometer reading. So a rectal thermometer reading of 101 degrees would roughly correspond to an oral thermometer reading of 100-100.5 degrees. It's important to use the same type of thermometer for consistent readings.
Why is it advised not to hold the thermometer by its bulb while reading it?
Holding the thermometer by its bulb can transfer heat from your hand to the bulb, affecting the temperature reading and providing inaccurate results. It's recommended to hold the thermometer by the stem to prevent any external heat sources from interfering with the measurement.
How do you read a glass thermometer?
Hold the thermometer at the top and look at the liquid level inside the tube for the temperature. Make sure the thermometer is at eye level and take note of the number closest to the liquid level to get the temperature reading.
Where do you hold the thermometer?
To get an accurate reading, hold the thermometer under your tongue, armpit, or in the rectum. These are common places to take temperature readings. Make sure to follow the specific instructions provided with your thermometer for the most accurate results.
How to use a thermometer accurately when reading the temperature?
To use a thermometer accurately when reading the temperature, first ensure the thermometer is clean and calibrated. Insert the thermometer into the area being measured (e.g., under the tongue, in the ear, or in the armpit) and wait for the reading to stabilize. Be sure to follow the manufacturer's instructions for the specific type of thermometer being used.
Why should you leave the thermometer in the liquid while you are measuring its temperature?
Leaving the thermometer in the liquid ensures that it reaches thermal equilibrium with the liquid, providing an accurate temperature reading. Removing the thermometer prematurely can result in an inaccurate measurement due to differences in temperature between the liquid and thermometer.
Is a thermometer linear?
Yes, a thermometer is linear because the relationship between the temperature being measured and the reading on the thermometer follows a straight line. This means that as the temperature increases or decreases, the reading on the thermometer changes in a consistent and predictable manner.
