"Light and Shadow" Light PPT Courseware 2

Description

"Light and Shadow" Light PPT Courseware 2

think about it

What conditions are needed for a shadow to occur?

Summarize

Conditions for shadow generation: light, obstruction, and screen (the obstruction must be between the light source and the screen)

Light source: An object that emits its own light, like a lamp. (It is a glowing object)

Conclusion: When the positions of the light source and the screen remain unchanged, the closer the distance between the light source and the occlusion object, the larger the shadow; the further the distance between the light source and the occlusion object, the smaller the shadow.

1. Objects that emit light by themselves, like electric lamps, are called ___________.

2. The conditions required for shadow production are___________

3. The shadow of an object illuminated from different sides is called ___________.

judge

1. The moon on the fifteenth day is big and round, so the moon is a light source. ( )

2. As long as there is light, there will be shadow. ( )

3. Use a flashlight to illuminate an object from different angles and its shadow will have different shapes and sizes. ( )

4. The direction of the shadow has nothing to do with the position of the light, but the length is related to the position of the light source. ( )

5. Fireflies are also a source of light. ( )

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

"Light and Shadow" Light PPT download:

"Light and Shadow" Light PPT Download Part One: Situation Introduction Do students know what game this is? What are the conditions for the production of hand puppets and shadow puppets? ... ... ... Light and Shadow PPT, Part 2: Knowledge Exploration Light source, occlusion, and screen are shadows...

"Light and Shadow" Light PPT:

"Light and Shadow" Light PPT Part One: Conditions for Shadow Generation Play shadow games and think about how shadows are generated. 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. When performing, art...

"Light and Shadow" Light PPT Courseware 4:

"Light and Shadow" Light PPT Courseware 4 Conditions for Shadow Generation 1. Conjecture: Conditions for Shadow Generation 2. Experiment: Shadow Game 3. Group Report: Do we see the shadow of our own hands? What did we do to see it? What conditions are needed for a shadow to occur? ... ... ..

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Update Time: 2024-09-09

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

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