"Comparative Resilience" Materials Around Us PPT Courseware 4

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Third Grade Science Volume 1, Textbook Edition	pptx	6 MB

"Comparative Resilience" Materials Around Us PPT Courseware 4

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Upload Time: 2024-09-17

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Description

"Comparative Resilience" Materials Around Us PPT Courseware 4

What is resilience?

Toughness refers to the property of an object that is not easily broken after being deformed by force.

How to compare toughness?

The greater the curvature, the greater the toughness.

Experimental steps

1. Mark the wooden, iron and plastic strips with a ruler.

2. Extend the wooden strip, iron strip and plastic strip 5 cm, 8 cm and 11 cm respectively from the table, and hang the hook code on the other end.

3. Use a piece of paper with graduations and place it close to the wooden strip, iron sheet and plastic strip respectively, and measure how much they bend.

4. Fill in the data in the table in the workbook and compare the toughness of these three materials.

Result analysis

From the experiment, we can see the curvature of the three materials: plastic strips>wooden strips>iron strips

The greater the curvature, the better the toughness.

The toughness of the three materials: plastic strips>wooden strips>iron strips

Disadvantages of plastic

1. Easy to age

2. Not easy to decompose

3. Easy to burn

4. Burning easily produces toxic gases

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For more information about the PPT courseware "The Materials Around Us Are Comparatively Tough", please click on the Materials Around Us PPT Comparative Toughness ppt tag.

"Comparative Resilience" Materials Around Us PPT Courseware 5:

"Comparative Toughness" Materials Around Us PPT Courseware 5 Cognition Introduction Many items need to be tough and able to deform but not break. Of these four items, which one has better toughness? Scientific inquiry Specific requirements: 1. Put wooden strips and cardboard strips of the same width and thickness...

"Comparative Resilience" Materials Around Us PPT Courseware 3:

"Comparative Toughness" Materials Around Us PPT Courseware 3 Understanding Toughness Toughness refers to the property of an object that is not easily broken after being deformed by force. Scientific inquiry Specific requirements: 1. Mark the scales on wooden strips, iron sheets and plastic strips of the same width and thickness, and then...

"Comparative Resilience" Materials Around Us PPT Courseware 2:

"Comparative Toughness" Materials Around Us PPT Courseware 2 Understanding Toughness We call the characteristic of materials that are not easily broken after being deformed by force called toughness. Which material is tougher? Understand plastics. Understand the following plastic products. What properties of plastics do they utilize? Key words..

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Update Time: 2024-09-17

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"Comparative Resilience" Materials Around Us PPT Courseware 4