حل تقييمات الأسبوع السابع ساينس Science للصف الثاني الإعدادي الترم الأول 2027
ينشر موقع شبابيك الإجابات النموذجية والحلول الكاملة لأسئلة تقييم الأسبوع السابع في مادة الساينس (Science) لطلاب الصف الثاني الإعدادي بمدارس اللغات في الفصل الدراسي الأول 2027.
وذلك في إطار الخدمات التعليمية الشاملة التي يقدمها الموقع لمساعدة الطلاب وأولياء الأمور في مراجعة الأداءات والواجبات المدرسية الأسبوعية التي أقرتها وزارة التربية والتعليم والتعليم الفني بكافة المدارس.
إجابات التقييم الأسبوعي السابع ساينس ثانية إعدادي لغات ترم أول 2027
وتتضمن الحلول والإجابات الرسمية التي أعدها نخبة من خبراء ومعلمي المادة بوزارة التربية والتعليم توضيحاً دقيقاً لكافة النقاط والأسئلة الواردة في التقييم.
بهدف تمكين الطلاب من مقارنة إجاباتهم بالحل الصحيح المعتمد وتحديد نقاط القوة والضعف لديهم وتدريبهم على الطريقة المثالية لتدوين الإجابات في امتحانات نهاية الفصل الدراسي الأول.
. Define each of the following:
- Thermal Equilibrium:
- Answer: The state reached by two systems with different temperature after they come into contact and their temperature becomes equal.
- Heat:
- Answer: Energy transfer from one system to another or surroundings due to differences in their temperature.
- Thermal Conduction:
- Answer: The transfer of thermal energy through solid from one point to another without particles move.
- Thermally Conductive Materials:
- Answer: Good material conducting of thermal energy.
- Thermally Insulating Materials:
- Answer: They are bad conducting material of thermal energy.
2. Complete the following sentences with suitable words:
- Heat transfers in three different ways: conduction, convection, and radiation.
- Energy transfers from a system with high temperature to a system with low temperature.
- The sun's heat reaches us by radiation, while a heater's heat reaches us by convection and radiation.
- Thermography camera can sense thermal radiation emitted by objects and convert it into color images.
3. Explain why:
- Cooking utensils are made of metal while their handles are made of wood or plastic.
- Answer: Because metals thermal conductor while wood and plastic thermal insulator.
- Polystyrene boards are preferred for use between hollow bricks when constructing building walls.
- Answer: To reduce air conditioning inside these building.
- Silver is used in the cooling systems of smartphones.
- Answer: Cause silver thermal conductor to ride off excessive heat generated in the internal components which may lead to reduce performance or may damage.
- An eagle soars at high altitudes without flapping its wings.
- Answer: Due to convection currents the air near earth heats up warm air moves up to overcome force because it is equal to the gravity.
- A heater is placed on the floor of a room.
- Answer: Because when the heater air heats the warm air has a low density move and cold air moves down so distributed warm air in room by convection currents.
- The sea breeze phenomenon occurs.
- Answer: Because warm air from land moves up and cold air from water moves down causing convection currents.
- Heat transfers from the sun to the earth despite the great distance between them.
- Answer: Because transfer by radiation which doesn't need particles to transfer heat.