شرح ساينس الصف الخامس الابتدائي لغات مستر احمد الباشا
ساينس خامسة ابتدائي

لينك تحميل الملزمة
https://drive.google.com/file/d/1the7SdNp2cj3pyFQ4yHgWA2RliY4ojER/view?usp=sharing

لينك تليجرام
https://t.me/mrahmedelbashagroup

In this part :
Activity: investigate the angle at which an object is pulled toward the ground by the force of gravity.
Tools:

Steps:
1. Tie the string to the meterstick and use a piece of tape to hold it in place, then attach the weight to the end of the string.
2. Suspend the meterstick horizontally between the books, so that the string and the weight can move freely.
3. Measure the angle between the meterstick and the string using the protractor.


Observation:
The angle will be 90° (because gravity always pulls objects downward).


4. Use several more books at the left side to tilt the meterstick up, then measure the angle between the meterstick and the string at the right side using the protractor.

Observation:
When the meterstick is tilted upward, the angle between the meterstick and the string is less than 900 (acute angle).

5. Move some books away from the left side to tilt the meterstick down, then measure the angle between the meterstick and the string at the right side using the protractor.

Observation:
When the meterstick is tilted downward, the angle between the meterstick and
the string is more than 900 (obtuse angle).


Conclusions:
- All objects on or near Earth's surface are pulled down toward the center of Earth.
- As the tilt of the meterstick changed, the angle changed because the weight is
always being pulled toward the ground.


بالتوفيق
مستر احمد الباشا