These thermometers measure the maximum and minimum water temperature during each day. Six’s Maximum and Minimum Thermometer: This Thermometer records both minimum and maximum temperature at a time. Expansion or contraction of the liquid in A causes a movement of the mercury thread. Thus, the lower end of the index on the left indicates the minimum and that on the right the maximum temperature attained. 14.5). The mean temperature for a day is calculated by taking average. These require longer answers than the structured questions that have fewer marks. The Thermometer has two arms and it looks like U. The lower portions of the arms are … One of the arms is fitted with a scale to record maximum and the other arm has a scale to record minimum temperature. The left side of this six’s shows the minimum temperature (about 15 degrees C), and the right side shows the maximum temperature (just about 25 degrees C). The bend of the U contains a thread of mercury. Measurement of the specific latent heat of fusion of ice . Maximum and minimum temperatures are measured by the maximum and minimum thermometers. It is used to record extreme temperatures at a location as in meteorology, horticulture etc. Sometimes, they are referred to as Maximum minimum thermometers for this reason. Two scales are provided, one against each limb of the tube so that the temperature may be read against either of the mercury levels. This thermometer is popular among gardeners for use in greenhouses. Always use caution when resetting any type of thermometer filled with gray liquid, as it is most likely mercury filled.Notice in the picture that there are two separate “lines” above the two mercury columns. The Stevenson Screen normally carries maximum and minimum thermometers, dry and wet bulb thermometers. They can be used to measure air temperatures. The maximum-minimum thermometer consists of a U-shaped glass tube filled with alcohol on both ends of the tube. Six-mark questions are extended open response questions. To calibrate a thermometer using the laboratory mercury thermometer as a standard. Six’s maximum and minimum thermometer. This is connected by a U-shaped stem to a second bulb nearly full of the same liquid (Fig. Explain the working of ‘Six’s maximum and minimum thermometer’ with the help of a diagram. Login. 14.5). Its purpose is to record the maximum and minimum temperatures reached since the thermometer was last read. All Activity; Questions; Unanswered; Categories; Users; Ask a Question ; NCERT Solutions; Ask a Question. It indicates current temperature along with the highest and the lowest temperatures since it was last set.
Six’s thermometer is used where when one wants to know the maximum or minimum temperature during a day. Remember. Explain the working of ‘Six’s maximum and minimum thermometer’ with the help of a diagram. They are either in the form of separate thermometers or joined in a U-shaped glass tube as in the Six’s thermometer. An index rests on top of either end of the mercury columns.
Measurement of the specific heat capacity of water. Data and images by Pierce College Weather Station. A maximum minimum thermometer, also known as Six's thermometer, is a thermometer which registers the maximum and minimum temperatures reached over a period of time, typically 24 hours. To measure the speed of sound in air. The bend of the U contains a thread of mercury. On the minimum side, the index will rest at the point of lowest temperature, whereas on the maximum side, the index will rest at the point of maximum temperature; this allows the observer to see the max and min temperatures recorded since the last time the thermometer was reset.The six’s thermometers are reset by shaking them in a downward motion which resets the mercury columns.It should be noted, that mercury is no longer used in newly manufactured thermometers due to the high toxicity levels of mercury. Sometimes, they are referred to as Maximum minimum thermometers for this reason. although oil of creosote is now more generall-yused. These are the indexes. Consequently, one or other index is pushed forward by the mercury and left in the extreme position reached. The Six’s Thermometers (on south side of pan) is on the lower left.These thermometers measure the maximum and minimum water temperature during each day. Resting on each of the mercury surfaces are small steel indexes provided with light springs to hold them in position in the stem. This is connected by a U-shaped stem to a second bulb nearly full of the same liquid (Fig. Register; Studyrankersonline. Generally speaking, a minimum temperature occurs during the nightalthough oil of creosote is now more generall-yused. After readings have been taken a small magnet is used to bring the indexes back into contact with the mercury. Six’s thermometers may also be used to measure air temperatures. In simplest terms, the six’s thermometer is merely a U-shaped thermometer, where one … The lowest point of each metal index indicates the temperature. Play our free online games Play Now. X. Two scales are provided, one against each limb of the tube so that the temperature may be read against either of the mercury levels. Powered by As the alcohol expands in response to temperature changes, the metal index on both sides of the thermometer record the maximum and minimum temperatures.
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