Table of Contents
- 1 What physical property does a thermometer use?
- 2 What are the properties of a good thermometer?
- 3 How must a physical property behave to measure temperature?
- 4 Which property of matter is used in measurement of temperature?
- 5 What is the physical property of a thermometer?
- 6 How does the resistance of a thermistor change?
What physical property does a thermometer use?
A thermometer has a liquid in a very narrow tube, which when heated will expand and move up the tube. If you cool the liquid down, then the liquid will contract and move back down the tube. So the physical property used in a thermometer is thermal expansion.
What property are most thermometers based on?
A clinical thermometer makes use of the expansion of mercury to measure temperature, while thermometers used in industry make use of electric properties that change with temperature. Physical properties that change with temperature are known as temperature-dependent properties.
What is thermometer property?
The property of an object which changes with temperature is called a thermometric property. The devices used to measure temperature are called thermometers.
What are the properties of a good thermometer?
It should not freeze nor boil in the working range.
What is the properties of temperature?
Temperature is the measure of the average kinetic energy of the particles, atoms or molecules, making up a substance. Temperature can be measured using a thermometer. It is measured in degrees on the Fahrenheit, Celsius, and Kelvin scales.
What properties are dependent on temperature?
2 shows the temperature-dependent physical properties including thermal conductivity, specific heat and liquid viscosity.
How must a physical property behave to measure temperature?
In terms of matter itself, temperature is directly proportional to the average kinetic energy of particles. If you add energy to particles – heating the object up, you are increasing the object’s temperature. As a result, the object will eventually change state where the particles are able to “fly” past one another.
What important properties should the liquid in the thermometer have?
A desirable property of a liquid used in a thermometer is a high coefficient of thermal expansion. This means even a small change in temperature results in a significant change in volume. Mercury was the original liquid of choice for thermometers.
What are the thermometric properties in making a thermometer liquid?
Its thermometric property is volume and it is used to determine the temperature by allowing the mercury or alcohol to expand or contract in the capillary tube as temperature rises or decreases. For example, some substances expand on heating, some change their colors, some change their electric resistance, etc.
Which property of matter is used in measurement of temperature?
The property of matter that is used in the measurement of temperature is thermal conductivity. Scientists used the Celsius and thermodynamic temperature to measure the temperature using the Kelvin scale which can be taken as an offset value of the Celsius scale.
What is an important property of heat?
Heat has a relationship with temperature, mass, and the volume of a substance. Specific heat is the amount of thermal energy per unit mass required to increase the temperature of the system of particles by one degree Celsius.
What does temperature depend on?
Temperature Depends on Particle Movement! All matter is made up of atoms that are moving…even solid objects have atoms that are vibrating. The motion from the atoms gives the object energy.
What is the physical property of a thermometer?
The physical property is referred to as thermometric property. The following table shows some of the thermometric properties of matter that are used in the various thermometers: Note: You can visit UY1: Measurement Of Temperature for a in-depth review of the different types of thermometers.
What are the uses of a thermistor thermometer?
Thermistors have a variety of applications. They are widely used as a way to measure temperature as a thermistor thermometer in many different liquid and ambient air environments. Some of the most common uses of thermistors include: Digital thermometers (thermostats)
Why are the thermometers called primary or secondary?
A thermometer is called primary or secondary based on how the raw physical quantity it measures is mapped to a temperature. As summarized by Kauppinen et al., “For primary thermometers the measured property of matter is known so well that temperature can be calculated without any unknown quantities.
How does the resistance of a thermistor change?
A thermistor (or thermal resistor) is defined as a type of resistor whose electrical resistance varies with changes in temperature. Although all resistors’ resistance will fluctuate slightly with temperature, a thermistor is particularly sensitive to temperature changes.