"Resisting Bending" Shape and Structure PPT Courseware 2

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"Resisting Bending" Shape and Structure PPT Courseware 2

Many houses and bridges are supported by upright materials (pillars) and horizontal materials (beams). When they are stressed, beams bend and break more easily than columns, so the ability of beams to resist bending is an important issue to study in architecture.

What factors are related to the bending resistance of bridges?

I think:

1. Related to the material of the bridge

2. Depends on the length of the bridge

3. Depends on the width of the bridge

4. Depends on the thickness of the bridge

Effect of width on bending resistance

Experiment content Width and bending resistance of paper

Our guess: Paper's ability to resist bending is related to its width.

Conditions changed in the experiment Width of paper (1 times wider, 2 times wider, 4 times wider)

The constant conditions in the experiment are the material, length and thickness of the paper, the distance between the paper and the bending degree of the paper, the weight of a single washer, the location of the washer, etc.

judge

1. The thickness of paper is directly proportional to its bending resistance. ( )

2. Beams placed horizontally can withstand greater pressure than placed vertically. ( )

3. Beams are easier to bend and break than columns. ( )

4. The bending resistance of two pieces of paper must be stronger than that of one piece of paper. ( )

practise:

1. The material’s bending resistance ( ).

A. Only related to material thickness B. Only related to material width C. Related to both material width and thickness

2. The thickness and width of the material ( ) affect the ability to resist bending.

A. Same degree B. More thickness C. More width

3. When studying the relationship between the width of paper and its bending resistance, the conditions to be changed are ( ).

A. Thickness of paper B. Width of paper C. Length of paper

4. When studying the relationship between the thickness of paper and its bending resistance, the conditions to be changed are ( ).

A. Paper material B. Paper width C. Paper thickness

5. When studying the relationship between the width of paper and its bending resistance, the following conditions remain unchanged ( ).

A. The length and thickness of the paper B. The length, width and thickness of the paper C. The width of the paper

6. When studying the relationship between the width of the paper beam and its bending resistance, the conditions to be changed are ( ).

When studying the relationship between the thickness and bending resistance of paper beams, the conditions that need to remain unchanged are ( ).

A. Paper material B. Paper thickness C. Paper width D. Paper length

E. The weight of a single washer

Study the thickness and bending resistance of paper

Guess what will happen to the paper's resistance to bending as the thickness increases? Use experimental methods to verify this conjecture.

1. What quantities should be kept constant during the experiment?

①The height of the paper beam remains unchanged;

②The bending standard remains unchanged;

③The overhead distance of the paper beam remains unchanged;

④The position of the washer remains unchanged;

⑤The width of the paper beam remains unchanged.

1. Experiment on paper beam width and bending resistance

We guess: the width of the paper beam is related to the bending resistance

Experimental equipment: paper beam (one piece each of 2, 4, and 8 cm cardboard); several washers of the same size, a ruler, and two science books

The same conditions: the height of the paper beam remains unchanged; the bending standard remains unchanged; the distance the paper beam is raised remains unchanged; the position of the washer remains unchanged; the thickness of the paper beam remains unchanged.

Different conditions: paper beam width changes exponentially

We conclude that as the width of the paper beam increases, the bending resistance will also increase.

2. Experiment on paper beam thickness and bending resistance

We guess: the thickness of the paper beam is related to the bending resistance

Experimental equipment: several paper beams of the same width and thickness; a bottle of glue; several washers of the same size, a ruler, and two science books

The same conditions: the height of the paper beam remains unchanged; the bending standard remains unchanged; the distance the paper beam is raised remains unchanged; the position of the washer remains unchanged; the width of the paper beam remains unchanged.

Different conditions: the thickness of the paper beam changes exponentially

We conclude that as the thickness of the paper beam increases, the bending resistance will be greatly increased.

Keywords: Shape and Structure Teaching Courseware, Resistance to Bending Teaching Courseware, Educational Science Edition Sixth Grade Science PPT Courseware Download, Sixth Grade Science Slide Courseware Download, Shape and Structure PPT Courseware Download, Resistance to Bending PPT Courseware Download, .PPT format;

For more information about the "Shape and Structure Resistance to Bending" PPT courseware, please click the Shape and Structure ppt Resistance to Bending ppt tab.

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"Resisting Bending" Shape and Structure PPT Teaching Courseware Part One: Introduction of New Lessons We know that houses and bridges are supported by columns and beams. It can be seen that the beam bears a lot of pressure, so what is the bending resistance of the beam? Today we will study it...

"Resisting Bending" Shape and Structure PPT Download:

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"Resisting Bending" Shape and Structure PPT:

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Update Time: 2024-11-20

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 1 industry PPT template

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