أجرب أكرر التجربة مستخدما أنابيب بأطوال مختلفة أتذكر أن اقص طرف كل أنبوب قبل أن انفخ فيه

أجرب أكرر التجربة مستخدما أنابيب بأطوال مختلفة أتذكر أن اقص طرف كل أنبوب قبل أن انفخ فيه كما فعلت سابقا أصف الصوت الذي أسمعه في كل مرة كيف اختلف الصوت

علوم ثالث ابتدائي الفصل الدراسي الثاني

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أجرب أكرر التجربة مستخدما أنابيب بأطوال مختلفة أتذكر أن اقص طرف كل أنبوب قبل أن انفخ فيه

أخر المواضيع من قسم : اسألني