Why a doctor dips the thermometer in a liquid before use? That liquid is actually, alcohol. Since the thermometer is kept beneath the tongue,
it needs to be cleaned to use it again
. Therefore doctor dips the thermometer in alcohol, which acts as a disinfectant, to clean the thermometer.
Why she dips the thermometer in a liquid before use answer?
Answer: a. She dipped the thermometer in a liquid before use. This is done to avoid infection because the liquid in which the
thermometer is dipped is an antiseptic and helps in preventing infection
.
Why thermometer is kept under tongue?
The internal body heat is present under the tongue
. So, thermometer is kept under the tongue to get the correct reading of inner body heat. This way we can measure the temperature of our whole body.
Why do we use liquids in thermometer?
The liquid in a thermometer typically stays in a bulb at the bottom of the device.
Because liquids expand as temperatures rise
, the liquid climbs the thermometer tube as the temperature warms.
Why does the liquid in a thermometer go down?
When heated, the molecules of the liquid in the thermometer move faster, causing them to get a little further apart. … When cooled,
the molecules of the liquid in the thermometer move slower
, causing them to get a little closer together. This results in movement down the thermometer.
Why mercury level does not fall when the thermometer is taken out of mouth?
The mercury does not fall or rise in a clinical thermometer when taken out of the mouth
because of the presence of kink
. It prevents mercury level from falling on its own.
Can we use sanitizer to clean thermometer?
Sherman says
hand sanitizers or disinfecting wipes can be
used to clean a thermometer in a pinch. “While hand sanitizer often does the job, not all hand sanitizers contain at least 70-percent alcohol, which is the official recommendation for disinfecting thermometers,” he explains.
What is normal temp under tongue?
The normal oral temperature for adults is
about 98.6° F (37° C)
. The normal oral temperature for a child is between 97.6° and 99.3° F (36.4° and 37.4° C). The normal oral temperature for older persons is 98.2° F (36.8° C).
Is temp under tongue accurate?
Should I add a degree to oral (under the tongue) and axillary (under the arm) readings? Yes, for the most accuracy.
Rectal temperatures are considered most accurate indication of the body's temperature
. Oral and axillary temperature readings are about 1⁄2° to 1°F (.
Does weather affect your temperature?
External factors, like warm summertime weather or chilly winter weather, can alter the
core body temperature
. Your level of activity, current health status and conditions of exposure will all play a significant role in exactly how much it causes your body temperature to change.
What is the liquid used in thermometer?
In a
mercury
thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.
What liquid is in a Galileo thermometer?
The liquid in AcuRite Galileo Thermometers is
100% paraffin
. The colored bulbs are filled with paraffin and 3.4% dye. The liquid is non-toxic. The dye inside colored bulbs may stain fabric.
Why do different thermometers give different readings?
“Liquid in glass thermometers show different readings for temperatures other than the fixed points
because of differing expansion properties
. A thermometer which uses a gas gives the same readings regardless of which gas is used”.
Why do thermometers use alcohol instead of water?
Alcohol thermometers are used rather than mercury thermometers in very cold regions
because alcohol has a lower freezing point than mercury
. … If it freezes it won't move in the tube, so a liquid must be used that has a freezing point that's lower than the temperature it's measuring.
Why is the mercury in a thermometer stored in a narrow tube?
3. The tube in the thermometer that contains the red liquid is
very thin
so that it is easier to see the liquid move up and down. … The alcohol and the mercury thermometers go up by different amounts because the molecules that make up alcohol and the atoms that make up mercury are different.
Why does mercury rise in a thermometer?
Heat. Why does mercury in a thermometer rise when the temperature goes up? In a mercury thermometer, the level of mercury rises when
its bulb comes in contact with a hot object because mercury expands when the temperature is increased
and hence it rises in the capillary tube.
