2018-2018学年河南省信阳市息县中考物理模拟试题(参考答案).doc
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2018-2018学年河南省信阳市息县中考物理模拟试题(参考答案).doc
2018-2018学年河南省信阳市息县中考物理模拟试题(参考答案)DIV.MyFav_1244095178244 P.MsoNormalTEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 10.5pt; MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 15.6pt; FONT-FAMILY: "Times New Roman" TEXT-ALIGN: justifyDIV.MyFav_1244095178244 LI.MsoNormalTEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 10.5pt; MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 15.6pt; FONT-FAMILY: "Times New Roman" TEXT-ALIGN: justifyDIV.MyFav_1244095178244 DIV.MsoNormalTEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 10.5pt; MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 15.6pt; FONT-FAMILY: "Times New Roman" TEXT-ALIGN: justifyDIV.MyFav_1244095178244 P.MsoHeaderBORDER-RIGHT: medium none; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; PADDING-LEFT: 0cm; FONT-SIZE: 9pt; PADDING-BOTTOM: 0cm; MARGIN: 0cm 0cm 0pt; BORDER-LEFT: medium none; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 12pt; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none; FONT-FAMILY: "Times New Roman" TEXT-ALIGN: centerDIV.MyFav_1244095178244 LI.MsoHeaderBORDER-RIGHT: medium none; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; PADDING-LEFT: 0cm; FONT-SIZE: 9pt; PADDING-BOTTOM: 0cm; MARGIN: 0cm 0cm 0pt; BORDER-LEFT: medium none; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 12pt; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none; FONT-FAMILY: "Times New Roman" TEXT-ALIGN: centerDIV.MyFav_1244095178244 DIV.MsoHeaderBORDER-RIGHT: medium none; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; PADDING-LEFT: 0cm; FONT-SIZE: 9pt; PADDING-BOTTOM: 0cm; MARGIN: 0cm 0cm 0pt; BORDER-LEFT: medium none; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 12pt; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none; FONT-FAMILY: "Times New Roman" TEXT-ALIGN: centerDIV.MyFav_1244095178244 P.MsoFooterFONT-SIZE: 9pt; MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 12pt; FONT-FAMILY: "Times New Roman"DIV.MyFav_1244095178244 LI.MsoFooterFONT-SIZE: 9pt; MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 12pt; FONT-FAMILY: "Times New Roman"DIV.MyFav_1244095178244 DIV.MsoFooterFONT-SIZE: 9pt; MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 12pt; FONT-FAMILY: "Times New Roman"DIV.MyFav_1244095178244 P.MsoBodyTextIndentTEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 14pt; MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 56pt; FONT-FAMILY: 新宋体; TEXT-ALIGN: justifyDIV.MyFav_1244095178244 LI.MsoBodyTextIndentTEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 14pt; MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 56pt; FONT-FAMILY: 新宋体; TEXT-ALIGN: justifyDIV.MyFav_1244095178244 DIV.MsoBodyTextIndentTEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 14pt; MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 56pt; FONT-FAMILY: 新宋体; TEXT-ALIGN: justifyDIV.MyFav_1244095178244 DIV.Section1page: Section1DIV.MyFav_1244095178244 OLMARGIN-BOTTOM: 0cmDIV.MyFav_1244095178244 ULMARGIN-BOTTOM: 0cm一、填空题1响度 能量211270 力越大物体的形变程度越大33×108m/s 增大压力4改变物体的形状5自己 36发声体的震动 音调7平面镜成像(或光的反射) 镜面8震动 音调9浮力 排开液体的重力104:1二、选择题11D12A13C14D15D16C17C18D19A20C三、作图题(略)四、实验探究题23浸入液体的体积越大,受到的浮力越大。(1分)浸没时深度改变,物体所受的浮力不变。(1分) (1分)(3分)把鸡蛋放入清水中,鸡蛋沉入水底,此时鸡蛋受的浮力小于受到的重力。向烧杯中加入食盐,改变液体的密度,直至鸡蛋上浮到液面。浮力等于鸡蛋的重力。结论:液体的密度变大,物体受的浮力变大。(注意:本题不能增加器材)24474 (1分)(2)首先测出空瓶的质量M1=14g(1分)测出装满水后,水和瓶的总质量M2=44g(1分)倒出水,再测出装满酱油和瓶的总质量M3=474g(1分)(3)V水=M水/水=(M2-M1)/水V瓶=V水=V酱油酱油=M酱油/V酱油=(M3-M1)/(M2-M1)×水(2分)25 1 2 20 04 二力平衡 40 小于20 (每空1分)五、综合运用题26F浮=G排=0.5N (2分)(2)V物=V排=G排/水g=0.5×10-4m3(2分)(3)盐=物=M物/V物=1.1×103kg/m3(2分)27.(1)跑跑鼠的平均速度大 (1分)(2)t1=s1/v1=7m/3.5m/s=2st2=t1v2=s2/t2=5m/2s=2.5m/s (3分)