"Measuring the Temperature of Water" Changes in Temperature and Water PPT Courseware 3

Description

"Measuring the Temperature of Water" Changes in Temperature and Water PPT Courseware 3

think:

Which thermometer should you choose to measure the temperature of water?

The temperature of the water will be between 0℃-100℃. Therefore, choose a thermometer with a measurement value in the range of 0℃-100℃.

How to measure water temperature

1. Hold the top of the thermometer in your hand.

2. Immerse the lower end of the thermometer in the water without touching the bottom and wall of the container.

3. Keep your sight level with the liquid level of the thermometer.

4. Take the reading when the liquid column no longer rises or falls.

5. The thermometer cannot leave the water being measured when reading.

What else should you pay attention to when measuring?

1. Handle the thermometer carefully to prevent it from breaking.

2. When using it, first observe whether the measuring range of the thermometer is suitable.

What we found

Except for tap water, the temperature of other types of water has dropped.

The temperature of hot water drops quickly, while the temperature of warm water drops slowly.

The warmer the water, the faster it initially falls.

Temperature rises, heat increases

Temperature drops, heat decreases

What did you discover from this data? What is the pattern of changes in water temperature?

The general rules for water cooling naturally are:

The warmer the water, the faster the temperature drops.

The temperature of tap water is the same as the temperature of the surrounding air.

Therefore, the water temperature hardly changes in a short period of time.

Science facts

For an object:

A decrease in temperature means that the object's heat content decreases. When the temperature rises, the heat of the object increases. Naturally, heat always moves from places with more heat to places with less heat.

If one hour passes, what will the temperature of the four glasses of water be?

If half a day passes, what will be the temperature of these four glasses of water?

If one day passes, what will be the temperature of these four glasses of water?

If two or three days have passed...

Summarize

The greater the temperature difference, the greater the cooling rate.

The higher the water temperature, the faster the temperature drops.

The temperature of tap water is the same as that of the surrounding air, and the water temperature will not change in a short period of time.

For an object: a decrease in temperature means a decrease in the amount of heat in the object. When the temperature rises, the heat of the object increases.

Keywords: Temperature and water changes teaching courseware, Measuring the temperature of water teaching courseware, Educational Science Edition third grade science PPT courseware download volume 2, Third grade science slide courseware download, Temperature and water changes PPT courseware download, Measuring the temperature of water PPT courseware download, .PPT format;

For more information about the PPT courseware "Temperature and Water Changes Measuring the Temperature of Water", please click the Temperature and Water Changes ppt Measuring the Temperature of Water ppt tag.

"Measuring the Temperature of Water" PPT download of changes in temperature and water:

"Measuring the Temperature of Water" Temperature and Water Changes PPT Download Part One: Introduction of New Knowledge In the last lesson, we had a preliminary understanding of thermometers. In today's lesson, we will use a thermometer to measure the temperature of water. ... ... ... Measuring the temperature of water PPT, Part 2...

"Measuring the Temperature of Water" Changes in Temperature and Water PPT:

"Measuring the Temperature of Water" Temperature and water changes PPT Part 1: Methods of measuring water temperature Which thermometer should be chosen to measure the temperature of water? What are the requirements and regulations? Generally speaking, the temperature of liquid water will be between 0°C and 100°C. So, measure...

"Measuring the Temperature of Water" Changes in Temperature and Water PPT Courseware 2:

"Measuring the Temperature of Water" Temperature and Water Changes PPT Courseware 2 Thinking: To measure the temperature of water, which thermometer should be chosen? The temperature of liquid water will be between 0℃~100℃. Therefore, you should choose a thermometer with a measurement value in the range of 0℃~100℃. How to measure water temperature by hand...

File Info

Update Time: 2024-11-24

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

Preview