they can be checked by keeping them in under arms
As a temp. indicator in thermometers.
Yes so they can get the temp. the better.
By 'regular thermometer' I presume you mean a medical thermometer, since that type is designed specifically for checking body tempertaure in humans and would not be suitable for most other uses. Other thermometers have a more general use, so that you can check the temperature of your room, or fridge, greenhouse etc.
You can read the temp a lot easier.
Oral temp is usually lower especially if the pt. is a "mouth breather" or has drank something cold.
nope.
Yes
A child's body temperature is the same as an adult's body temperature. A normal oral temperature is 98.6 degrees. Forehead or underarm temperature is normally one degree less because it is more exposed to the air which results in less than a core-body temperature, so a normal forehead or underarm temp can be around 97.6. Note: A high underarm temp should be re-checked orally to confirm a fever. For example, if a forehead or underarm temp is 100.8, the oral temp is likely 101.8. Rectal temp is sometimes preferred to give a more accurate reading.
Take your temperature at the same time every day for a week. Use an oral thermometer. Do not test right after you've had anything to drink--hot or cold drinks can temporarily change the oral temp.
Rectal temperature is much less influenced by other factors.
A thermometer is a tool used to measure temperature. There are various types of thermometers, such as digital, infrared, and mercury thermometers, that can measure temperature in different ways depending on the application.
No. You only add a degree when taking a axial (under the arm) temp. This is because the axial temp is taken externally, so it only gives a close approximation of the body's internal temperature. Since oral temps are taken from inside the mouth, they give you the accurate internal body temperature without having to add anything.