Density is the measure of how many atoms are in a given space of a material. Basically, itâs how closely packed the atoms are in a material. To measure a materialâs density, you need to know how many atoms are in the material (the mass), and how much space it takes (volume).
Freebase(0.00 / 0 votes)Rate this definition: Wind rose. A wind rose is a graphic tool used by meteorologists to give a succinct view of how wind speed and direction are typically distributed at a particular location. Historically, wind roses were predecessors of the compass rose, as there was no differentiation between a cardinal direction and the wind which blew from such a direction.
The mistral is a katabatic wind (caused by the difference in pressure between the cold air of a high pressure system over northwest Europe and a low pressure system in the Med â¦ iterranean).he mistral is a katabatic wind (caused by the difference in pressure between the cold air of a high pressure system over northwest Europe and a low pressure system in the Med â¦ iterranean).