"Temperature" Changes in State of Matter PPT Courseware 5

Description

"Temperature" Changes in State of Matter PPT Courseware 5

Temperature: Meaning: How hot or cold an object is.

learning target

1. Through observation, understand the structure and working principle of a thermometer, know the regulations of Celsius temperature, and understand some common temperature values ​​through textbook information.

2. Learn how to use the thermometer correctly through experiments.

3. Understand the differences between thermometers and ordinary thermometers through observation.

Put the homemade thermometer into hot water and carefully observe the position of the water column in the thin tube. Then put it into cold water and observe the position of the water column. What phenomenon do you see?

Why is this?

When the temperature of the water in the bottle rises, it will expand due to heat, squeeze the water into the straw, and the water column will move up. When a bottle is put into cold water, the water in the bottle shrinks in volume when it is cold, and the water column will drop.

Let’s find a solution together!

1. How to modify our homemade thermometer to make it more portable?

2. How to modify our homemade thermometer to make it more sensitive?

3. How to modify our homemade thermometer so that it can accurately measure the temperature value?

How to express temperature:

The Celsius temperature was formulated by Swedish physicist Anders Celsius (1701-1744) in 1742.

Test in class

1. The _________ of an object is called temperature. To accurately judge or measure the temperature of an object, _________ is used. Commonly used thermometers are made based on the properties of _____________.

2. The correct reading of -20℃ is ( )

A. Minus 20 degrees Celsius B. Minus 20 degrees Celsius

C. Minus 20 degrees Celsius D. Minus 20 degrees Celsius

3. In the figure below, the readings of each thermometer are:

A is_______

B is _______

4. In the experiment of "measuring the temperature of water with a thermometer", after the following four steps, the correct sequence is _________

A. Select a thermometer and observe the measuring range and minimum scale of the thermometer;

B. Let the thermometer fully contact the water being measured;

C. Take out the thermometer;

D. Observe the reading on the thermometer.

5. The readings of two thermometers that have not been used are both 39 ºC. After disinfection, they are directly used to measure two patients whose body temperatures are 36 ºC and 40 ºC. The readings of these two thermometers are ( )

A, 36 ºC and 40 ºC B, 40 ºC and 40 ºC

C, 39 ºC and 40 ºC D, 39 ºC and 39 ºC

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For more information about the PPT courseware "Temperature of Changes in State of Matter", please click on the "Change of State of Matter ppt Temperature ppt" tab.

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Update Time: 2024-07-04

This template belongs to Physics courseware People's Education Edition Physics for Grade 8, Volume 1 industry PPT template

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