الصف الرابع الابتدائي ساينس
ساينس رابعة ابتدائي

لينك تحميل الملزمة
https://drive.google.com/file/d/1jcsPT8S4ZrPMowx0qBmtiNCV8Or5cQls/view?usp=sharing

لينك تليجرام
https://t.me/scimrahmedelbasha

In This Video :
Windmills and watermills:
- Hundreds of years ago, people needed machines to make their lives easier,
For example, they used windmills and watermills which helped them to grind grain to make flour.
- The following table shows the energy used in windmills and watermills as well as the advantages and disadvantages of each :
Old mills and modern turbines

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