"The Sink and Float of Materials in Water" Materials Around Us PPT Courseware 4

Description

"The Sink and Float of Materials in Water" Materials Around Us PPT Courseware 4

think about it

1. How to put materials into water? Place the object gently in the middle of the water and then let go

2. How to judge the sinking and sinking of materials? How to calculate weight?

If the object touches the bottom of the tank downward, it means that it sinks in the water. If the object cannot touch the bottom of the tank, it means that it floats in the water.

Experimental requirements

1. Test the materials one by one in order. After testing one material, take it out and then test the next material.

2. Fill in the experiment record sheet (sink or float)

3. The group that completes the experiment quickly can try the materials around them to see how they float in the water.

4. When doing experiments, students are asked to handle them with care to prevent water droplets from splashing on the table.

What we found

1. Objects made of metal materials are mostly _______ in the water; objects made of wood, plastic, and foam materials are _______ in the water.

2. The sinking and floating of objects in water is related to the _______ that make up the object.

wood

Wood has been a very important natural material since ancient times. People directly process trees into wood, which is widely used in all aspects of production and life. Do you know what properties these uses of wood are related to?

do you know?

A mature tree takes at least ten years to grow in nature. The world's forests are declining rapidly due to environmental pollution and artificial logging. People have now begun to use other materials to replace wood, and even make wood and wood scraps into artificial boards, which are widely used.

Students, what other alternatives to wood do you know?

Expand research

How to prevent the waste of wood resources in life? Do you have any good ideas?

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"The Sink and Float of Materials in Water" Materials around us PPT:

"The Sinking and Floating of Materials in Water" Materials Around Us PPT Part One: Sinking and Floating Experiment If common materials such as wood, paper, metal, and plastic are put into water, which of them will float and which will sink? Collect something made of wood, metal, plastic...

"The Sink and Float of Materials in Water" Materials Around Us PPT Courseware 3:

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"The Sink and Float of Materials in Water" Materials Around Us PPT Courseware 2:

"The Sinking and Floating of Materials in Water" Materials Around Us PPT Courseware 2 Think about it 1. How to judge the sinking and floating of materials? How to calculate weight? If the object touches the bottom of the tank downward, it means that it sinks in the water. If the object cannot touch the bottom of the tank, it means that it sinks in the water.

File Info

Update Time: 2024-11-21

This template belongs to science courseware Third Grade Science Volume 1, Textbook Edition industry PPT template

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