初二物理长度单位换算

初二物理长度单位换算Prepared on 21 November 2021

一、基本单位换算

1、直接写出

1m=( )km=( )dm=( )cm=( )mm=( )μm=(

)nm

10-4m=( )mm 104mm=( )m 106nm=( )km 106μm=( )m

2、用科学计数法表示（写出单位换算过程）

7.2×10-

7m=____________________________________=__________________________μm 5×10-

4mm=____________________________________=__________________________dm 15×10-

2dm=____________________________________=__________________________m 0.95mm=_______________________________________=______________________ ____nm

11.8×10-

6m=____________________________________=__________________________μm 340nm=________________________________________=______________________ ____c m

0.00012km=_____________________________________=_____________________ _____mm

515cm=_________________________________________=_____________________ _____km