"Freezing" PPT courseware on changes in water

Category	Format	Size
Hunan Education Edition Fourth Grade Science Volume 1	pptx	6 MB

"Freezing" PPT courseware on changes in water

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Upload Time: 2024-11-22

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"Freezing" PPT courseware on changes in water

Discussion: Do you know what icing phenomena occur in nature?

Ice is solid water.

Communication: What conditions are needed for water to freeze?

Follow the method below to conduct an experiment to see at what temperature water can freeze.

1. Put ice cubes in the cup and measure the temperature of the ice.

2. Add table salt into the cup and measure the temperature of the mixture of ice and salt.

3. Insert a test tube containing a small amount of water into the ice and salt mixture. When ice appears in the test tube, measure the temperature in the test tube.

Think about it: Can we use the equipment provided below to design an experiment to explore the cause of frost?

When the weather is dry, you can put a wet towel under the iron cylinder!

The world of ice and snow on Earth──Antarctica and the North Pole

Most of the Earth's poles are covered with ice and snow all year round. The Antarctic land ice sheet is connected with the surrounding fixed sea ice to form a vast white ice sheet. The average thickness of the ice sheet is about 2,000 meters, and the thickest part is as high as 4,800 meters.

Keywords: water changes teaching courseware, freezing teaching courseware, Hunan Education Edition fourth grade science PPT courseware download, fourth grade science slide courseware download, water changes PPT courseware download, freezing PPT courseware download, .PPT Format;

For more information about the PPT courseware "The Change of Water Frozen", please click the "The Change of Water Freezes" ppt tag.

"Water Frozen" PPT download of changes in temperature and water:

"Water Frozen" PPT Download of Changes in Temperature and Water Part One: Introduction of New Knowledge Do you want to know what is in this bag? Come on stage, touch it and tell me how you guessed it? ... ... ... Water freezes PPT, part 2: new knowledge explained...

"Water Frozen" Changes in Temperature and Water PPT:

"Water Frozen" PPT on Changes in Temperature and Water Part One: Observation of Ice Take some ice cubes and observe them carefully. What color is ice? Can you see other objects through the ice? Do ice cubes have a fixed shape? How does it feel when you touch an ice cube with your hand? ... ..

"Water Frozen" PPT Courseware 2 on Changes in the Four Seasons:

"Water Frozen" Changes in the Four Seasons PPT Courseware 2 Do you understand water? Think about it, what does water look like in daily life? Please describe the characteristics of water from some of the following aspects. The color, smell, taste, state of water, etc. What are the characteristics of water? colorless no...

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Update Time: 2024-11-22

This template belongs to science courseware Hunan Education Edition Fourth Grade Science Volume 1 industry PPT template

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Changes in water ppt Freezing ppt

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"Freezing" PPT courseware on changes in water