露、霜、雪的比較

露是水氣凝結成小水滴附著在物體上；霜是地面附近的水蒸氣結成冰晶附著在物體上；雪則是由高空中的冰晶直接降於地面。

露

霜 

 雪 

圖片引用來源：

Dew Drops. Photography. Encyclopædia Britannica Image Quest. Web. 12 Sep 2011. http://quest.eb.com/media/image.htm?mediaId=139_1953598  

Frost. Photography. Encyclopædia Britannica Image Quest. Web. 12 Sep 2011. http://quest.eb.com/media/image.htm?mediaId=139_2009871  

Frost. Photograph. Encyclopædia Britannica Image Quest. Web. 12 Sep 2011. http://quest.eb.com/media/image.htm?mediaId=106_931094  

Snow. Photograph. Encyclopædia Britannica Image Quest. Web. 12 Sep 2011. http://quest.eb.com/media/image.htm?mediaId=139_1903359