Questions bank of El Moasser Unit 2 Lesson 1 Electric Forces Part 1 (حل اسئلة المعاصر) 2027

Aحل و شرح كتاب المعاصر ساينس اولي اعدادي المنهج الجديد مجانا لوجه الله تعالي ( لا تبخل علينا بالاشتراك في القناة ومشاركتها ) Questions ? UNIT 2 Lesson 1 First Questions Bank of EL-MOASSER Answered Questions of Part 1 From the Beginning of the Lesson Till before Electric Forces 1Write the term expressed by each of the following statements: (1)The charges accumulated on the surfaces of objects due to losing or gaining electrons (2)The process of charging two neutral objects as a result of rubbing them together (3)A device used to protect buildings and installations from damage caused by electric charges (4)The unit of measurement of electric charge (5)A device used to measure weak electric charges (6)The arrangement of materials according to how easily they lose electrons when rubbed together (7)The charge acquired by an object that loses electrons when rubbed (8)A material in the electrostatic series that always acquires a positive charge when rubbed with any other material (9)A material in the electrostatic series that always acquires a negative charge when rubbed with any other material 2 Match each material in column (A) with the appropriate statement in column (B) (A) (1) Ebonite (2) Wool (3) Wood (4) Carbon (B) (a)The type of charge generated on it when rubbed with cotton differs from that generated when rubbed with silk. (b)Electric charges leak from its surface when one end is rubbed with another material. (c)It loses electrons when rubbed with a glass rod (d)It acquires a positive charge when rubbed with synthetic leather (e)It gains electrons when rubbed with any other material in the electrostatic series 3Choose the correct answer: (1)A material that conducts electricity is .. ⓐ glass rod ⓑ wooden ruler ⓒ plastic drinking straw ⓓ metal nail (2)All of the following are electrically non-conducting materials except ⓐ wood ⓑ carbon ⓒ ebonite ⓓ silk (3)Static electric charges accumulate on the surfaces of all the following materials when rubbed with silk except ⓐ wood ⓑ copper ⓒ ebonite ⓓ glass (4)Which of the following works to discharge electric charges accumulated on clouds? ⓐ Coulometer ⓑ Electroscope ⓒ Lightning rod ⓓ Hoffmann voltameter (5)Which of the following illustrates how a rod acquires a negative electric charge when rubbed with a piece of cloth? [Diagrams labeled a, b, c, d showing charges on a cloth and a rod] (6)Electric charges are measured in ⓐ newtons ⓑ coulombs ⓒ kilograms ⓓ newtons/kg (7)The quantity of static electric charge is measured using a ⓐ ammeter ⓑ coulometer ⓒ voltmeter ⓓ ohmmeter (8)All the following materials precede cotton in the electrostatic series except ⓐ silk ⓑ glass ⓒ ebonite ⓓ wool (9)Which of the following materials gains electrons when rubbed with wool? ⓐ Wood ⓑ Glass ⓒ Silk ⓓ Paper (10)The following materials acquire a negative charge when rubbed with a wooden rod except ⓐ glass ⓑ leather ⓒ silk ⓓ wool (11)A rod made of ..... can be charged with static electricity when rubbed with wool, only if the rubbed part is insulated ⓐ glass ⓑ plastic ⓒ iron ⓓ ebonite (12)All the following materials acquire a positive charge when rubbed with silk except ⓐ wood ⓑ glass ⓒ ebonite ⓓ synthetic leather (13)Silk acquires a negative charge when rubbed with .... ⓐ cotton ⓑ paper ⓒ wool ⓓ hair 4 Complete the following table When rubbing / Material that acquires Positive charge / Material that acquires Negative charge (1)An ebonite rod with silk .... / .... (2)Paper with wool ... / .... (3)A glass rod with cotton .... / ... (4)Wool with cotton ..... / .. 5 Complete the following statements: (1)Iron is a material that .... electricity, whereas glass is a material that .... electricity (2)In a lightning-rod system, its lower end is fixed to ... and its upper end is ... (3)A material that .... electrons becomes positively charged, whereas a material that .. electrons becomes negatively charged. (4)The charges of the rubbing object and the rubbed object are equal in ... and differ in ..... . (5)The scientist .... formulated the inverse-square law, and his studies formed the basis for the development of ... theory. (6)When a glass rod is rubbed with synthetic leather, the glass rod acquires a ... charge and the synthetic leather acquires a ..... charge (7)When silk and paper are each rubbed with cotton, silk acquires a .. electric charge, whereas paper acquires a .. electric charge (8)When wool is rubbed with cotton, electrons transfer from the ... piece to the ... piece 6 Put (✓) or (✗) for each statement, with correction: (1)When an uncharged object made of an insulating material is rubbed with a suitable material, an electric charge forms only on the rubbed part #science #Scienceprep1 #elmoasser #El-Moasser #المعاصر #حل_كناب_المعاصر #حل_المعاصر #prep1Science #اولي_اعدادي #مجانا #شرح_مجاني #free #freescience #ibrahim_Soltan #ابراهيم_سلطان #egypt #zayed #giza #ساينس #ساينس_اولي_اعدادي #science_with_ibrahim_soltan