2014年深圳市罗湖区小学六年级科学下学期期末考试试卷及答案

<div style="text-align: center;"><span style="font-weight: bold;"><font color="#ff0000">2013至2014年第二学期</font></span></div><div style="text-align: center;"><font color="#ff0000"><br></font></div><span style=" font-weight:bold; "><div style="text-align: center;"><font color="#ff0000">罗湖区小学科学六年级抽样性质量检测试卷</font></div></span><br><div style="text-align: center;">(满分:100分&nbsp;&nbsp;&nbsp;考试时间:40分钟)</div><br><div style="text-align: center;">命题人:&nbsp;&nbsp;审题人:&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;</div><br><span style=" font-weight:bold; ">一、选择题(本题共14小题,每小题2分,共28分)</span><span style=" font-weight:bold; "></span><br><br><span>1、</span><span>深圳是一个严重缺水的城市,其生产生活用水水源主要来自(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><span>A、珠江&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B、深圳水库&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C、东江&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D、大梅沙海域</span><br><br><span>2、下面各种物质中,全是晶体的一组是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span>A、水晶、雪花、玻璃&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B、糖、碱、维生素&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C、盐、味精、珍珠</span><br><br><span>3、下面三幅图中,发生日食的图是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><img src="//www.szxuexiao.com/uploadimages/2014/0708/201478151515.jpg?m=0.00080308155156672"><br><br><span>4、北极星是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)星座的主要标志。&nbsp;</span><br><br><span>A、大熊&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B、北斗&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C、猎户&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D、小熊&nbsp;</span><br><br><span>5、在米饭或淀粉上滴上碘酒会出现(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span>A、</span><span>黑色&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B、紫红色&nbsp;&nbsp;&nbsp;&nbsp;C、蓝色&nbsp;</span><br><br><span>6、很多使用过的物品都可以回收利用,世界通用的回收标志是</span><span>(&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><img src="//www.szxuexiao.com/uploadimages/2014/0708/201478151550.jpg?m=0.30768519686535"><br><br><span>7、</span><span>铁钉在有腐蚀的情况下容易生锈,(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)不能防止和减缓铁生锈。</span><br><br><span>A、</span><span>刷油漆&nbsp;&nbsp;&nbsp;&nbsp;B、抹油&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C、放入盐水中</span><br><br><span>8、</span><span>物质的变化判断正确的是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span>A、硫酸铜溶液与铁钉的反应是化学变化</span><br><br><span>B、点燃的蜡烛只发生物理变化</span><br><br><span>C、铁生锈是物理变化</span><br><br><span style=" font-family: 宋体;">9、下面的透明玻璃镜片具有放大作用的是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。&nbsp;</span><span style=" font-family: 宋体;"></span><br><br><img src="//www.szxuexiao.com/uploadimages/2014/0708/201478151641.jpg?m=0.9045451316051185"><br><br><span style=" font-weight:bold; ">10、</span><span>建立自然保护区是保护保护生物多样性的有效方法,可以为物种的生存、繁衍提供良好的场所。下列自然保护区中,哪个属于深圳的自然保护区。(&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span>A</span>、<span>九寨沟自然保护区  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B</span>、<span>卧龙自然保护区&nbsp;&nbsp;&nbsp;</span><br><br><span>C</span>、<span>鼎湖自然保护区&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D、内伶仃—福田红树林自然保护区</span><br><br><span>11、下列天体系统的层次,由小到大排列顺序正确的是(&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span>A.太阳系—银河系—地月系—总星系&nbsp;&nbsp;&nbsp;&nbsp;B.地月系—太阳系—银河系—总星系&nbsp;</span><br><br><span>C.地月系—银河系—太阳系—总星系&nbsp;&nbsp;&nbsp;&nbsp;D.太阳系—地月系—银河系—总星系&nbsp;</span><br><br><span>12、</span><span>生物最基本的功能单位是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span>A、细菌&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B、病毒&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C、细胞</span><br><br><span>13、月相圆缺变化一个周期的时间大约是(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span>A、一天&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B、一个月&nbsp;&nbsp;&nbsp;&nbsp;C、一年</span><br><br><span>14、面包内部疏松多孔,是因为在生面团中揉入了(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><br><br><span>A、霉菌&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B、细胞&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C、酵母菌</span><br><br><span style=" font-weight:bold; ">二、判断题:</span><span>(本题共13小题,每小题2分,共26分)对的请在括号里打“√”,错的请在&nbsp;&nbsp;&nbsp;&nbsp;括号里打“×”。)</span><br><br><span>15、</span><span>&nbsp;</span><span style=" font-family: 宋体;">太阳是宇宙中唯一能发光的恒星。…………………………………&nbsp;(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><span style=" font-family: 宋体;">&nbsp;</span><span style=" font-family: 宋体;"></span><br><br><span>16、碱面是粉末状的,它不属于晶体物质。</span><span style=" font-family: 宋体;">………………………………(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><span style=" font-family: 宋体;">&nbsp;</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">17、人是由物质构成的,而空气、火、声音不是物质。…………………(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">18、用蜡烛加热白糖时,既发生了物理变化,又发生了化学变化。……(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">19、微生物对人类只有危害,没有好处。…………………………………(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">20、月球是距离地球最近的行星,也是地球的卫星。……………………(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">21、在太阳系的八大行星中,离太阳最近的是金星。……………………(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">22、废旧日光灯管是有害有毒的垃圾。……………………………………(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><span style=" font-family: 宋体;">&nbsp;</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">23、过期的药品可以随便扔在垃圾里,和垃圾一起扔掉。………………(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">24、我们可以借助大熊星座的北斗七星的勺子前沿的两颗向前直线延长5倍找到北极星。(&nbsp;)</span><span style=" font-family: 宋体;"></span><br><br><span>25、在制作洋葱切片标本中,碘酒的作用是染色。</span><span style=" font-family: 宋体;">………………………(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><span style=" font-family: 宋体;"></span><br><br><span>26、海水晒盐是化学变化。</span><span style=" font-family: 宋体;">…………………………………………………(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><span style=" font-family: 宋体;">&nbsp;</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">27、人的最高视力也只能看清楚1/5毫米大小的微小物体。……………(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)</span><span style=" font-family: 宋体;"></span><br><br><span style="font-weight:bold; ">三、</span><span style=" font-weight:bold; ">填图题</span><span>(本题共1小题,共14分)</span><br><br><span>28、下面是人们解决垃圾问题时的一些方法,请你将这些方法的编号填写在概念图中合适的方框中。</span><br><br><img src="//www.szxuexiao.com/uploadimages/2014/0708/201478151816.jpg?m=0.9796389557886869"><br><br><span style=" font-weight:bold; ">四、实验探究题</span><span>(本题共3小题,共32分)</span><br><br><span>29、</span><span>下面是一个小组的实验汇报发言,请你根据题后的要求作答。(&nbsp;10&nbsp;分)</span><br><br><div style="text-align: center;"><span style="font-weight: bold;">关于使用显微镜观察洋葱内表皮细胞的实验汇报</span></div><br><span>  我们小组把一片洋葱内表皮细胞的切片标本放在显微镜上观察。从目镜里往下看,发现里面黑乎乎的,什么也看不见。于是,我们调节载物台下的反光镜。再从目镜里往下看,却只能看到亮圈,看不到洋葱内表皮的细胞。我们检查标本片已经放在载物台上,然后调整准螺旋,眼睛对着目镜将镜筒忽上忽下调整,直到模糊的图像变清晰为止。</span><br><br>  <span>此时,从目镜里往下看,发现标本图像偏左了,我们慢慢地向</span><span style=" text-decoration:underline ; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span>移动载玻片;又发现标本图像又太靠上了,我们再慢慢向</span><span style=" text-decoration:underline ; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span>移动载玻片,此时能清晰地看到视野内的洋葱内表皮细胞。我们还画了洋葱内表皮细胞的图。</span><br><br><span>(1)请你将报告中画线部分补充完整(4分)并画出洋葱内表皮细胞图。(2分)</span><br><br><span>洋葱内表皮细胞图:</span><br><br><span>(2)</span><span>该小组的操作中有错误的地方,请找出一处并加以改正。(4分)</span><br><br><span>错误是:</span><span style=" text-decoration:underline ; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style=" text-decoration:underline ; "></span><br><br><span>应改为:</span><span style=" text-decoration:underline ; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><br><br><span>30、一天晚上小明到楼下散步,看到的月相如下图,</span><span>请你根据题后的要求作答。</span><span>(共10分)</span><br><br><img src="//www.szxuexiao.com/uploadimages/2014/0708/201478151927.jpg?m=0.2970228912308812"><br><br><span>(1)</span><span>小明根据此时的月相推测当天日期为农历</span><span style=" text-decoration:underline ; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span>。(2分)</span><br><br><span>(2)</span><span>请你推测再过两天的月相,画在下图中。(2分)</span><br><br>&nbsp;<img src="//www.szxuexiao.com/uploadimages/2014/0708/20147815207.jpg?m=0.004597308812662959"><br><br><span>(3)</span><span>为了弄懂月相变化规律,小明做了一个模拟实验,请写出实验中分别代表什么。(6分)</span><br><br><img src="//www.szxuexiao.com/uploadimages/2014/0708/201478152111.jpg?m=0.2875217255204916"><br><br><span>①一半涂黑的皮球&nbsp;,代表</span><span style=" text-decoration:underline ; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span>;</span><br><br><span>②皮球黑色的一面始终背对着黑板&nbsp;,代表</span><span style=" text-decoration:underline ; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><br><br><span>③场地内的同学,代表</span><span style=" text-decoration:underline ; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span>。</span><br><br><span>31、</span><span style=" font-family: 宋体;">探究小苏打和白醋混合后的变化(共12分)。</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">在实验中,我们需要在玻璃杯中先倒入3匙白醋,再加入1匙小苏打。</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">小苏打和白醋混合后:我们观察到的现象是产生了大量的气泡。</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">(1)用手触摸玻璃杯的外壁,我们感觉到玻璃杯外壁_____________。(2分)</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">(2)产生的气体可以使燃烧的细木条______________。(2分)</span><span>说明这种气体的特点是</span><span style=" font-weight:bold; text-decoration:underline ; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style=" font-weight:bold; ">。</span><span>(2分)</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">(3)科学研究发现:小苏打和白醋混合后,产生的气体是_______________,它的重量比空气_____________。(4分)</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">(4)小苏打和白醋混合后,发生的变化是_______________变化。(2分)</span><span style=" font-family: 宋体;"></span><br><br>{$setpage}<div><br><br><div style="text-align: center;"><strong><font color="#38761d">2013至2014年第二学期<span style="text-align: center;">罗湖区小学科学六年级抽样性质量检测试卷参考答案</span></font></strong></div><br><span style="font-weight:bold; ">一、</span><span style=" font-weight:bold; ">选择题(本题共14小题,每小题2分,共28分)</span><div><strong><br></strong> <table width="100%" border="1"><tbody><tr><td><br>题号<br></td><td><br>1&nbsp;<br></td><td><br>2<br></td><td><br>3<br></td><td><br>4<br></td><td><br>5<br></td><td><br>6<br></td><td><br>7<br></td><td><br>8<br></td><td><br>9<br></td><td><br>10<br></td><td><br>11<br></td><td><br>12<br></td><td><br>13<br></td><td><br>14<br></td></tr><tr><td><br>答案<br></td><td><br>C<br></td><td><br>B<br></td><td><br>B<br></td><td><br>D<br></td><td><br>C<br></td><td><br>C<br></td><td><br>C<br></td><td><br>A<br></td><td><br>C<br></td><td><br>D<br></td><td><br>B<br></td><td><br>C<br></td><td><br>B<br></td><td><br>C<br></td></tr></tbody></table> <br><span style=" font-weight:bold; ">二、判断题:</span><span>(本题共13小题,每小题2分,共26分)对的请在括号里打“√”,错的请在&nbsp;&nbsp;&nbsp;&nbsp;括号里打“×”。)</span></div><div><br> <table width="100%" border="1"><tbody><tr><td><br>题号<br></td><td><br>15<br></td><td><br>16<br></td><td><br>17<br></td><td><br>18<br></td><td><br>19<br></td><td><br>20<br></td><td><br>21<br></td><td><br>22<br></td><td><br>23<br></td><td><br>24<br></td><td><br>25<br></td><td><br>26<br></td><td><br>27<br></td></tr><tr><td><br>答案<br></td><td><br>×<br></td><td><br>×<br></td><td><br>×<br></td><td><br>√<br></td><td><br>×<br></td><td><br>×<br></td><td><br>×<br></td><td><br>√<br></td><td><br>×<br></td><td><br>√<br></td><td><br>√<br></td><td><br>×<br></td><td><br>√<br></td></tr></tbody></table> <br><span style="font-weight:bold; ">四、</span><span style=" font-weight:bold; ">填图题</span><span>(本题共1小题,共14分)</span><br><br><span>24、下面是人们解决垃圾问题时的一些方法,请你将这些方法的编号填写在概念图中合适的方框中。</span><br><br><span>①焚烧垃圾&nbsp;&nbsp;&nbsp;&nbsp;②减少丢弃&nbsp;&nbsp;&nbsp;③填埋垃圾&nbsp;&nbsp;&nbsp;&nbsp;④垃圾分类&nbsp;&nbsp;&nbsp;</span><br><br><span>⑤重复使用&nbsp;&nbsp;&nbsp;&nbsp;⑥做堆肥&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;⑦回收加工&nbsp;&nbsp;&nbsp;&nbsp;⑧少用一次性产品&nbsp;</span><br><br><div style="text-align: center;"><strong>解决垃圾问题的概念图</strong></div><br><font color="#ff0000"><span>评分要点:(共14分)</span><br><br><span>1、将编号2、5、8、7填写在左侧方框中,不分次序,每个编号1.5分,共6分。</span><br><br><span>2、将编号1、3、6、4填写在左侧方框中,不分次序,每个编号1.5分,共6分。</span><br><br><span>3、将7、4分别填写在左右两侧最下面的方框中,各加记1分,2分。</span><br></font><br><img src="//www.szxuexiao.com/uploadimages/2014/0708/201478152255.jpg?m=0.306937332265079"><br><span style="font-weight: bold;">四、实验探究题</span>(本题共3小题,共32分)<br><br><span>1、</span><span>下面是一个小组的实验汇报发言,请你根据题后的要求作答。(&nbsp;10&nbsp;分)</span><br><br><span style=" font-weight:bold; ">&nbsp;</span><span>此时,从目镜里往下看,发现标本图像偏左了,于是我们慢慢地向</span><span style=" text-decoration:underline ; ">&nbsp;</span><span style=" font-weight:bold; ">左</span><span style=" text-decoration:underline ; ">&nbsp;&nbsp;</span><span>移动载玻片;又发现标本图像又太靠上了,我们再慢慢向</span><span style=" text-decoration:underline ; ">&nbsp;</span><span style=" font-weight:bold; ">上</span><span style=" font-weight:bold; text-decoration:underline ; ">&nbsp;</span><span style=" text-decoration:underline ; ">&nbsp;</span><span>移动载玻片,此时能清晰地看到洋葱内表皮细胞。我们还画了洋葱内表皮细胞的图。</span><br><br><span>(1)请你将报告中画线部分补充完整</span><span>(每空2分,共4分)</span><span>并画出洋葱内表皮细胞图。</span><span>(2分)</span><br><br><font color="#ff0000"><span>洋葱内表皮细胞图:</span><span>评分要点:至少有一个完整的洋葱表皮细胞(能画出细胞壁、细胞核)得2分。</span></font><br><br><img src="//www.szxuexiao.com/uploadimages/2014/0708/201478152346.jpg?m=0.13673054822720587"><br><br><span>(2)该小组的操作中有错误的地方,请找出一处并加以改正。</span><span>(4分)</span><br><br><span>评分要点:1、找出错误得2分,改正得2分。</span><br><br><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2、只要能找出一处错误并订正得满分。</span><br><br><span style=" font-family: 宋体;">错误1:</span><span style=" text-decoration:underline ; ">从目镜里往下看,发现里面黑乎乎的,什么也看不见。&nbsp;&nbsp;&nbsp;</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">改正:</span><span style=" text-decoration:underline ; ">先调节反光镜直到能从目镜里看到一个亮的光圈后,再放切片标本观察</span><span style=" font-family: 宋体;">。</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">错误2</span><span>:</span><span style=" text-decoration:underline ; ">调整准螺旋时,眼睛对着目镜将镜筒忽上忽下调整,直到模糊的图像变清晰为止。</span><span style="text-decoration: underline; font-family: 宋体;"></span><br><br><span>应改为:</span><span style=" text-decoration:underline ; ">调整准焦螺旋时,将镜筒移到最低处,</span><span style=" text-decoration:underline ; ">眼睛对着目镜将镜筒</span><span style=" text-decoration:underline ; ">慢慢升起</span><span style=" text-decoration:underline ; ">&nbsp;,直到模糊的图像变清晰为止。</span><span style=" text-decoration:underline ; "></span><br><br><span>2、一天晚上小明到楼下散步,看到的月相如下图,</span><span>请你根据题后的要求作答。</span><span>(10分)</span><br><br><span>(3)</span><span>小明根据此时的月相推测当天日期为农历</span><span style=" text-decoration:underline ; ">&nbsp;&nbsp;</span><span style=" font-weight:bold; text-decoration:underline ; ">初七或初八</span><span style=" text-decoration:underline ; ">&nbsp;&nbsp;</span><span>。</span><span style=" font-weight:bold; ">(2分</span><span style=" font-weight:bold; ">)</span><br><br><span>(4)</span><span>请你推测再过两天的月相,画在下图中。</span><span style=" font-weight:bold; ">(2分)</span><br><br><img src="//www.szxuexiao.com/uploadimages/2014/0708/201478152423.jpg?m=0.2574188041035086"><br><br><span>(4)</span><span>为了弄懂月相变化规律,小明做了一个模拟实验,请写出实验中分别代表什么。(6分,每空2分)</span><br><br><span>①一半涂黑的皮球&nbsp;,代表</span><span style=" text-decoration:underline ; ">&nbsp;&nbsp;&nbsp;被太阳照亮的月球&nbsp;&nbsp;&nbsp;;</span><br><br><span>②皮球黑色的一面始终背对着黑板&nbsp;,代表</span><span style=" text-decoration:underline ; ">&nbsp;&nbsp;月球的亮面朝着太阳&nbsp;&nbsp;;</span><span style=" text-decoration:underline ; "></span><br><br><span>③场地内的同学,代表</span><span style=" text-decoration:underline ; ">&nbsp;&nbsp;&nbsp;地球上的观察者&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;。</span><span style=" text-decoration:underline ; "></span><br><br><span>3、</span><span style=" font-family: 宋体;">探究小苏打和白醋混合后的变化(共12分)。</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">在实验中,我们需要在玻璃杯中先倒入3匙白醋,再加入1匙小苏打。</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">小苏打和白醋混合后:我们观察到的现象是产生了大量的气泡。</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">&nbsp;(1)用手触摸玻璃杯的外壁,我们感觉到玻璃杯外壁</span><span style=" text-decoration:underline ; ">__</span><span style=" font-weight:bold; text-decoration:underline ; ">杯子温度降低(或凉凉的)</span><span style=" text-decoration:underline ; ">_。(2分)</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">(2)产生的气体可以使燃烧的细木条_</span><span style=" font-weight:bold; ">熄灭</span><span style=" font-family: 宋体;">_______。(2分)</span><span>说明这种气体的特点是</span><span style=" font-weight:bold; text-decoration:underline ; ">不支持燃烧。</span><span style=" text-decoration:underline ; ">(2分)</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">(3)科学研究发现:小苏打和白醋混合后,产生的气体是</span><span style=" text-decoration:underline ; ">_</span><span style=" font-weight:bold; text-decoration:underline ; ">_二氧化碳</span><span style=" text-decoration:underline ; ">__</span><span style=" font-family: 宋体;">_,它的重量比空气__</span><span>重</span><span style=" font-family: 宋体;">____。(4分)</span><span style=" font-family: 宋体;"></span><br><br><span style=" font-family: 宋体;">(4)小苏打和白醋混合后,发生的变化是</span><span style=" text-decoration:underline ; ">___化学_</span><span style=" font-family: 宋体;">_变化。(2分)</span><span style=" font-family: 宋体;"></span><br><br></div></div>