"Light and Shadow" Light PPT

Description

"Light and Shadow" Light PPT

Part One: Conditions for Shadow Generation

Play a shadow game and think about how shadows are created.

Shadow puppetry is a kind of silhouette of characters made of animal skin or cardboard, which is performed with a light-proof cloth under the illumination of candles and other light sources. During the performance, the artists manipulated opera characters with their hands behind a white curtain while singing and telling stories in popular local tunes, accompanied by percussion instruments and string instruments, giving it a strong local flavor.

Shadow puppetry is a traditional art in my country. It was performed in the Northern Song Dynasty and spread to West Asia and Europe in the Yuan Dynasty.

Light and Shadow PPT, Part 2: Light Source

An object that emits its own light is called a light source.

What are light sources?

Light and Shadow PPT, Part 3: Shadow

Under the illumination of light, objects have shadows. What are the characteristics of shadows?

Place the block on the table and shine the flashlight from different positions. Draw the shadows of the wooden blocks on the table.

The direction of the shadow: changes as the light source ________ changes, the shadow is always on the ________ side.

The length of the shadow: changes with the ________ of the light source. When the light source is direct, the shadow is the ________. As the degree of oblique light becomes larger and larger, the shadow becomes more and more ________.

Shine a flashlight on three blocks of wood at different distances from the wall. Draw their shadows on the wall.

The size of the shadow: related to ____________________. The farther an object is from the light source, the _________ the shadow of the illuminated object.

Knowing this, let’s play a hand shadow game again to see if it conforms to these rules.

Shadows change as the position of the light source changes.

The size of the shadow is related to the distance between the occlusion and the light source.

The shape of the shadow is related to the shape of the side of the object illuminated by the light source.

Keywords: Free download of Chinese PPT courseware for the fifth grade in the textbook edition, free download of light and shadow PPT, download of light PPT, .PPT format;

For more information about the "Light and Shadow" PPT courseware, please click the "Light ppt Light and Shadow ppt" tab.

Black matte fabric PPT background image:

This is a black matte fabric PPT background image, keywords: black fabric, wood grain slide background image. .jpg format;..

Two yellow cartoon white clouds and sunshine PPT background pictures:

These are two yellow cartoon style, white clouds and sunshine PPT background images, in .PNG format;...

Four abstract light and shadow PPT background pictures:

These are four abstract PPT background pictures with light and shadow effects. 2 blue and 2 red. .PPTX format;..

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Update Time: 2024-11-26

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

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