On the Beaufort Scales the definition of one less than a hurricane is a violent storm.
Yes. By definition, most gases are less dense than most solids. i can't think of a counter example. Plus, the gas inside a hot air balloon is superheated to make it even less dense, as heating things makes them less dense
no
An official report on the strength of a hurricane.
It was a warm hurricane. All hurricanes are tropical by definition.
Oxygen is less dense.
No, it is more dense. If it were less dense it would float.
Yes ammonia is less dense than air
if it sinks its more dense if it floats its less dense
Trenches are the lowest points on the crust of the Earth, created by the subduction of oceanic crust beneath less dense crust.
it is less dense
If more dense, it will sink when put into water; if less dense it floats.
its has more pressure