三、填空题(共12分，每小题2分)

题号 答案 分数 题号 答案 分数

19 3×105 2分 22 72 2分

20 运动 2分 23 A 2分

21 可 2分 24 0.92×103 2分

四、实验探究题(共35分)

25.2014                                                               (2分)

26.6918.6                                                              (2分)

27.1                                                                  (2分)

28.不停地做无规则运动                                                 (2分)

29.增大                                                               (2分)

30.海波   48   液                                                     (3分)

31.照相机    靠近                                                     (4分)

32.(1)小于     U型管中液面高度差(2)水的深度有关                      (3分)

33.4.5    0.5                                                          (2分)

34.0.1(W/V2)U2                                                         (2分)

35.0.4W                                                                (2分)

36.熔化     直接                                                         (2分)

37.用刻度尺测量出OD的长度L1    ρB=ρ水 L0/(L0-L1)                    (2分)