八年级物理上册第四章物态变化单元测试题(A)(国外英文资料).doc

八年级物理上册第四章物态变化单元测试题(A)(国外英文资料) The fourth chapter first grade eight physical state changes of unit tests (A) Time: 60 minutes Full Score: 100 points A choice (13 x 3) 1. early spring snow melt belongs to which of the following (change of state) A. B. C. D. sublimation melting solidification liquefaction 2. in autumn morning, sometimes we can see on the grass with dew, and the air may be fog, the visibility is reduced, the following analysis is (right) A. dew is liquefaction, mist vaporization B. is the dew vaporization, the fog is liquefaction The dew and fog is vaporization C. The dew and fog is liquefaction D. The following 3. phenomena belong to the sublimation is () Do A. incandescent lamp filament with long thin B. fell to the ground water after a while C. will be put into the water after the water sugar sweetened D. popsicles later feel cool The following 4. natural phenomena are not liquefaction (is) A. ice into water fog B. C. boiling water, white steam spout out D. grassland on the dew In the summer of 5. we eat popsicles in childhood, will find out white steam from popsicles, and in the winter we breathe, as you can see this white steam, about the two white steam forming process analysis is correct () A. is the liquefaction phenomenon B. is the phenomenon of vaporization C. summer white steam is the phenomenon of liquefaction, winter white steam is vaporization D. summer white steam is the vaporization phenomenon, winter white steam is liquefaction 6. if the boiling point of water is 100 degrees Celsius, the boiling point of alcohol is 78.5 DEG C, the liquor (a mixture of alcohol and water) with a container into the good is always 100 DEG C water bath in it () A. alcohol not boiling water will boil boiling water B. alcohol will not boil. C. alcohol and water alcohol and water will not boil boiling D. The crystal belongs to the 7. the following items in (is) A. B. C. D. glass crystal candle rosin 8. the melting point of gold is 1064 DEG C, it is just 1064