شرح درس مصادر الضوء الصف الرابع

سامر علي

شرح درس مصادر الضوء الصف الرابع العلوم والحياة

مصادر الضوء

تقسم الى :

صناعية : هي مصادر خلقها الانسان ويستطيع التحكم بها مثل المصباح الكهربائي ، الشمعة ، فانوس.
طبيعية : هي مصادر خلقها الله ولا يستطيع البشر التحكم بها مثل : الشمس ، البرق ، النجوم.

دروس ص4

سامر علي

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