"Shadows in the Sun" Light PPT Teaching Courseware

Description

"Shadows in the Sun" Light PPT Teaching Courseware

Part 1: Importing new lessons

Do we ever see shadows in the sun? Do shadows in sunlight change throughout the day, and how? Today we are going to learn about it.

Shadows in the Sun PPT, Part 2: New Lesson Learning

Sun: east-south-west

Shadow: west-north-east

Changes in shadow length: longer in the morning, gradually shorter, and shortest at noon.

Then it becomes longer, reaching its longest length when the sun is about to set in the west.

When the sun is at its highest, the shadow is the shortest, and when the sun is at its lowest, the shadow is the longest.

Shadows in the Sun PPT, Part 3: Conclusion

The direction in which the sun rises is not due east, and the direction in which the sun sets is not due west. The direction and length of the shadow change with the direction and position of the sun. In the early morning and evening, the sun is at its lowest and the shadow is the longest; at noon the sun is at its highest and the shadow is the shortest.

Shadows in the Sun PPT, Part 4: Classroom Exercises

(1) Fill in the blanks

1. The direction and length of the shadow change with the ______ and position of the sun.

2. In the early morning and evening, when the sun is at its lowest position, the shadow is most _____; at noon, when the sun is at its highest position, the shadow is most _____.

(2) Judgment questions

1. The shadow of an object under sunlight does not change throughout the day. ( )

2. The shadow of an object is always on the side backlit by the sun. ( )

3. The shorter the shadow, the higher the sun is. ( )

Shadow in the Sun PPT, Part 5: Homework Assignment

Check out the information to understand why ancient people used shadows to tell time and what scientific reasons there are.

Keywords: free download of Chinese PPT courseware for the fifth grade in the textbook edition, download of Shadow in the Sun PPT, download of Light PPT, .PPT format;

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Update Time: 2024-11-18

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

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