When you see AS ___ AS ___, you are looking at A Simile - a comparison between two things. Someone is comparing the thickness of something (you didn't say what) to a blanket. It depends on what the other thing is, actually. Blankets can be thin or thick depending on which type they are. For example, if someone said "The fog is thick as a blanket," they probably mean it's a thick, heavy fog that covers everything up.
No, it is not a preposition. Blanket is a noun, and can also be a verb (to cover completely, as an area).
You are going to be hard-pressed to find a metaphor for blanket since metaphors use a common object to symbolize a more complex concept. Blankets are fairly common objects so they usually become the symbol. You will find snow, metaphorically blanketing the ground and you will find a 'wet blanket' in attendance at most parties. You will find 'blanket rules' that have nothing to do with a bed and if you look hard enough, you will find a 'security blanket' that may not be made of cloth.
1 1/2in thick and 500 pages
If your talking about the movie then the meaning of it is...well there is no meaning. It's just to entertain people.
depends on the units. is it a 2 x 6 piece of plywood? or is it just a piece of paper? If it is wood then its 2" or feet thick. If its like a 3D object then i couldn't tell you cause i don't know the other dimension.
Something that is covered. By google eg The haze is like a thick blanket.
Haze
an extreamly thick one
a comforter set is the thick blanket on your bed
Stratocumulus
The idiom "like a thick blanket" typically refers to something that provides a sense of comfort, warmth, or protection. It can describe a feeling of security or a situation that envelops someone in a soothing or calming manner. Additionally, it may imply that something is heavy or overwhelming, much like a thick blanket can be physically.
i would say 40
The air between the two will also help hold in heat.
Joemama boomer
the clouds were as thick as a wool blanket and the rain fell as fast as lightning
The blanket of air on Earth, known as the atmosphere, is about 62 miles (100 kilometers) thick. The majority of Earth's atmosphere is contained within the first 18 miles (30 kilometers) from the surface.
Stratus clouds cover the sky like a thick blanket, typically bringing overcast conditions and sometimes light precipitation. They are low-lying clouds that can stretch for long distances.