Welcome
back my fellow learners, today we are going to find out the
differences between fog and clouds.
Both fog
and clouds are created when water vapour condenses or to form minute
droplets or crystals within the air. So why I hear you ask, are they
so different? Well read on, and you will find the answer to your
question.
Fog can
only be created at low altitudes.
Clouds
on the other hand can be created at any altitude. They can be seen as
high as 12 miles rising above the sea level, or even as low as the
ground. Fog is a type of cloud which creeps along the ground. Fog is
formed when air close to the ground gets cool enough to turn to water
vapour.
There
are various different kinds of fog, also. Ice fog is created when air
close to the ground gets cold enough to turn water in fog into ice.
Ice fog is formed at extremely cold temperatures. And is a common
sight in the likes of Canada and Alaska.
Another
type of fog is the freezing kind. Ice crystals are formed within the
air when it gets cold enough, and particles such as smoke or dust
within the air provide a type of seed for the crystals to be formed
around. Sometimes it can get cold enough, however, the air has no
particles in it. With this case, water within the air get
supercooled. This supercooled water is in liquid form, however, it is
colder than freezing point. When it comes into direct contact with
other cold surfaces like sidewalks or roads, it immediately forms a
hazardous icy top layer.
One of
the worse types of fog is known as super fog. This is created when
smoke being emitted from wildfires and water vapour clash to form a
very dense fog. The smoke offers particles for water vapour to
condense around. This combination is extremely dangerous. A super fog
is so thick that a person cannot even see their own hand when placed
in front of their face. Super fog create extreme driving conditions,
so it is advisable to stay off the roads when this occurs.
No comments:
Post a Comment