Other / 13/01/2019

What are the thermometric properties in making a thermometer liquid?

A property which changes with temperature is called a thermometric property. These can include volume, pressure, electrical resistance, emf and colour. With one of these properties, a thermometer can be made. Two fixed points will also be needed to create a temperature scale to display numbers.

Which property of a liquid is most important when designing a thermometer?

Because mercury has no set shape, it can conform to the shape of the glass tube that the thermometer is made from. Liquids expand when heated and contract when cooled. This is obviously very important for a thermometer.

What is the physical property of temperature?

This is a funny question because temperature is a property of matter – a physical property to be exact. This includes the temperature points of changing states – boiling, melting, and freezing points. In terms of matter itself, temperature is directly proportional to the average kinetic energy of particles.

What does the maximum and minimum thermometer read?

The maximum temperature is read at the level of the bottom of the maximum marker, the minimum temperature is read at the bottom of the minimum marker. 3. Record the present temperature by reading at the top of the mercury column on either side (they read the same on the maximum or the minimum side).

Which liquid is used in thermometer?

mercury 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 is the property of temperature?

What is maximum minimum thermometer Class 7?

Class 7 Question Six’s thermometer is a regisetring thermometer which can record the minimum and maximum temperatures reached over a period of time, for example 24 hours. There is a special thermometer called maximum minimum thermometer which automatically records the maximum and minimum temperatures of a day.

What is the difference between maximum and minimum temperature on Monday?

The temperature of air measured using a maximum-minimum thermometer can be used to show the difference in temperature over a period of time, usually one day. The difference between the daily maximum and the daily minimum is called the diurnal range.

What is the property of a liquid in a thermometer?

The important property of a liquid in a thermometer is thermal expansion. That is, the liquid expands at a consistent and predictable rate so as it expands up the thermometer, it accurately represents the temperature. Different liquids have different rates of expansion so as long as you know what the liquid is you can calibrate the thermometer.

What kind of liquid is used to measure temperature?

A thermometric liquid is a liquid that can change its volume (increase or decrease) in accordance with surrounding temperature. In other words, thermometric liquids are used in thermometers to measure temperature. Mercury and alcohol are common thermometric liquids.

Is it safe to use liquid in glass thermometer?

Reading temperature via liquid-in-glass thermometers call for brilliant eyesight. Liquid element contained in a glass thermometer may be perilous or risky to health owing to their potential chemical spills. These thermometers display temperature either in Celsius or Fahrenheit scales.

Why is mercury used in a thermometer tube?

Liquids expand when heated and contract when cooled. This is obviously very important for a thermometer. It is because of this property of liquid that the mercury can go up the thermometer tube as the temperature goes up. Mercury is not the only liquid that can be used in a thermometer.

What is the property of a liquid does a thermometer use?

Liquids have no set shape. Because mercury has no set shape, it can conform to the shape of the glass tube that the thermometer is made from. Liquids expand when heated and contract when cooled. This is obviously very important for a thermometer. It is because of this property of liquid that the mercury can go up…

Why is mercury used in liquid in glass thermometer?

Mercury was/is used not only because of the wide temperature range (theoretically applicable from -39 °C to 357 °C) but also because mercury hardly wets the glass tube. The capillarity is therefore lower and the temperature can be displayed and read off more accurately.

Can a thermometer be used to measure body temperature?

Thermometers – tools that are used to measure temperature. The most common consists of a tank with liquid and a graduated tube. Liquid from thermometers (usually mercury or alcohol) is expanding as the temperature rises and it rises within the tube. Clinical thermometers with mercury can be used to measure body temperature.