Q9. Answer Acceptable Mark answers (a)(i) B electrons (1) (a)(ii) An explanation negative charge linking (reject protons and (negative) electrons positive charge for transfer (1) this mp) moves because of cloth loses friction/from cloth (to electrons/negative base) (1) charge (to base) = 2 (2) A suggestion to cup/metal is a include charge conductor ignore (any) could move (a)(iii) metal is not an through cup /metal insulator to earth/ (1) (cup is) earthed ground / to/ through (1) student's hand (2) (a)(iv) (1) (b) examples when refuelling, spark between end of fuel/pipe and vehicle =2 spark between/from /to person A description to comb/clothes/metal include the situation handle and, when which caused the combing charge separation (1) hair/removing where the spark clothing/opening travelled from or to(1) door = 2 lightning flash, between cloud and cloud/plane/ground, =2 ignore between plug and socket/jump leads (2)
Q9. Answer Acceptable answers Mark (a)(i) B electrons (1) (a)(ii) An explanation linking (negative) electrons transfer (1) because of friction/from cloth (to base) (1) negative charge (reject protons and positive charge for this mp) moves cloth loses electrons/negative charge (to base) = 2 (2) (a)(iii) A suggestion to include charge (any) could move through cup /metal (1) (cup is) earthed (1) cup/metal is a conductor ignore metal is not an insulator to earth/ ground / to/ through student's hand (2) (a)(iv) (1) (b) A description to include the situation which caused the charge separation (1) where the spark travelled from or to(1) examples when refuelling, spark between end of fuel/pipe and vehicle =2 spark between/from /to person comb/clothes/metal handle and, when combing hair/removing clothing/opening door = 2 lightning flash, between cloud and cloud/plane/ground, =2 ignore between plug and socket/jump leads (2)
11_20160124221326_P2_static_electricity_Q's_v1.docx