"Measurement of Temperature" State of Matter and Its Changes PPT Courseware

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"Measurement of Temperature" State of Matter and Its Changes PPT Courseware

temperature measurement

1. How to use a thermometer?

2. How many states of matter are there? How do they transform into each other?

1. Thermometer

1. What is temperature?

The degree of hotness or coldness of an object is called temperature.

2. What is the manufacturing principle of experimental thermometer?

Thermometers used at home and in physics experiments are made by utilizing the thermal expansion and contraction of liquids such as mercury, alcohol, and kerosene.

3. What are some types of thermometers?

2. Temperature in degrees Celsius

1. What does the letter C on the thermometer mean?

The letters ℃ on the thermometer indicate the temperature in Celsius

2. How are 0 degrees Celsius and 100 degrees Celsius defined?

It is stipulated as follows: the temperature of the ice-water mixture is set as 0 degrees, and the temperature of boiling water under standard atmospheric pressure is set as 100 degrees. The distance between 0 degrees and 100 degrees is divided into 100 equal parts, and each equal part is divided into one degree of Celsius. The unit is called 1 degree Celsius.

Thermometer Group A

1. Temperature is a physical quantity that represents ______. Commonly used thermometers measure temperature based on the properties of ______. The letter C on the thermometer indicates that the ______ temperature is used. It specifies the temperature of ______ as 0℃, and _____ The temperature of _ is specified as 100℃.

2. The normal human body temperature (oral temperature) is approximately ______, pronounced ______.

3． The measuring range of the thermometer is ______, and the minimum scale value is ______.

4. Use the same thermometer to measure the temperature of water at 0°C and ice-water mixture at 0°C. Which of the following statements is correct? [ ]

A. 0℃ water temperature is high

B． The temperature of the ice-water mixture at 0°C is high

C. Both have the same temperature

D． Can't compare

5. The correct way to disinfect a thermometer is [ ]

A. Boil in boiling water. B． Use alcohol lamp to heat.

C. Rinse with tap water. D． Wipe with alcohol cotton.

Supplementary exercises

1. Fill-in questions

1. Commonly used thermometers are made based on the properties of ______. The liquid used can be ______, ______ or ______.

2. A mercury thermometer is commonly used in the laboratory. Its lower end is ______, and a ______ with a very thin inner diameter is connected to it. When the temperature changes slightly, the ______ of the mercury surface in the thin tube will change.

3． The letters "℃" on the thermometer indicate that the thermometer adopts the ______ temperature scale. Its low point is ______ at atmospheric pressure. The temperature of ______ is 0 degrees. The high point is ______. The temperature of ______ at atmospheric pressure is 100. Spend.

4. The smallest scale of the thermometer is ______℃, and the measurement range is from ______℃ to ______℃.

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Update Time: 2024-09-09

This template belongs to Physics courseware Beijing Normal University eighth grade physics volume one industry PPT template

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