"Temperature and Thermometer" Changes in Temperature and Water PPT Courseware 3

Description

"Temperature and Thermometer" Changes in Temperature and Water PPT Courseware 3

scientific concept

Temperature The degree of hotness or coldness of an object is called temperature, usually expressed in degrees Celsius (℃).

Teach a new lesson

1. If there are two glasses of water, which one is hot and which one is cold? Can you tell the difference?

2. If there are four glasses of water, can you tell whether the water in the glass is hot or cold with your fingers?

Observation thermometer

The thermometer is mainly composed of three parts: glass tube, glass bubble and scale.

How to read temperature correctly

1. Hold the upper end of the thermometer in your hand.

2. After the liquid level is still, the line of sight is level with the liquid level of the thermometer.

3. Hold your breath and take the reading.

Class exercises

1. The degree of hotness and coldness of an object is called ( ) and is usually represented by ( ).

2. The temperature of an object can be measured using ( ).

3. The thermometer is mainly composed of three parts: ( ), ( ), and ( ).

4. 37℃ is read as ( ), 0℃ is read as ( ), and -5℃ is read as ( ).

5. Writing at 49 degrees Celsius ( ), writing at minus 36 degrees Celsius ( ).

6. Cover the glass bulb of the thermometer with your hand to heat it up, and the liquid column of the thermometer will ( ).

practise:

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, which specifies the temperature of ______ at 1 standard atmosphere. is 0℃, the temperature of ______ at 1 standard atmosphere is defined as 100℃.

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

3. The measuring range of the thermometer is ___________, and the graduation value is ______.

Use of thermometer

Use a thermometer correctly:

1. See clearly the range and graduation value of the thermometer;

2. The glass bulb of the thermometer should be completely immersed in the liquid to be measured, and do not touch the bottom or wall of the container; (immerse in the liquid, do not touch the bottom of the wall)

3. Wait for a while after the glass bulb of the thermometer is immersed in the liquid to be measured, and then take a reading after the thermometer's reading is stable;

4. When reading, the glass bulb of the thermometer should remain in the liquid, and the line of sight should be level with the upper surface of the liquid column in the thermometer. (Read steadily while looking straight into the liquid)

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"Temperature and Thermometer" PPT download of changes in temperature and water:

"Temperature and Thermometer" Changes in Temperature and Water PPT Download Part One: Introduction of New Knowledge Talk about it. Students, we feel very hot in summer and very cold in winter. What is the difference between these two seasons? ... ... ... Temperature and thermometer PPT..

"Temperature and Thermometer" Changes in Temperature and Water PPT:

"Temperature and Thermometer" Changes in Temperature and Water PPT Part 1 Content: Comparing Hot and Cold Water If there are two cups of water, which cup is hot? Which cup is cold? Can we feel it by touching it with our hands? There are four cups on the table. Cup No. 1 contains cold water, cups No. 2 and No. 3...

"Temperature and Thermometer" Changes in Temperature and Water PPT Courseware 2:

"Temperature and Thermometer" Changes in Temperature and Water PPT Courseware 2 The degree of hotness and coldness of an object is called temperature. Observation Tips: Handle the thermometer carefully to prevent it from breaking! If the thermometer tube breaks, tell your teacher immediately! ... ... ... Methods of observing temperature: ..

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Update Time: 2024-11-22

This template belongs to science courseware Third Grade Science Volume 2, Textbook Edition industry PPT template

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