"Light and Shadow" Light PPT download

Description

"Light and Shadow" Light PPT download

Part One: Situation Import

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 the conditions for shadow generation (the occlusion must be between the light source and the screen).

1. What is a light source?

Objects that can emit light by themselves, such as lamps and light tubes, are called light sources.

Light sources such as candles, fireflies, and fluorescent lamps emit their own light instead of reflecting light from other objects.

2. Characteristics of shadow changes

Activities

1. Change the position of the light source

2. Change the distance between the light source and the obstruction

3. Change the shape of the side of the object

Light and Shadow PPT, Part 3: Summary of this Lesson

1. Conditions for shadow generation.

2. An object that can emit light by itself and is emitting light is called a light source.

3. The position and direction of the shadow change with the position of the light source.

Light and Shadow PPT, Part 4: Expansion and Extension

Shadow puppetry, also known as "shadow play" or "lantern shadow play", is a performing art that uses silhouettes of characters made of animal skins or cardboard to reflect the shape of the shadow on the screen using light.

Light and Shadow PPT, Part 5: Classroom Training

1. Fill in the blanks

1. It is used in many places such as traffic signs on the street and signs at the door of restrooms ( ).

2. To determine whether an object is a light source, first of all, it must be based on ( ).

3.The color of the shadow is ( ).

judge

1. The obstruction does not have to be between the light source and the screen. ( )

2. The moon is a light source because the moon is a luminous object. ( )

3. The rainbow is an optical phenomenon. ( )

4. As the object becomes farther and farther away from the light source, the shadow of the illuminated object becomes smaller and smaller. ( )

Light and Shadow PPT, Part Six: Homework

Learn to make hand shadows, observe the changing patterns of shadows, and keep records.

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

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File Info

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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