The Crust Is The Coolest One I Think because it isn't made of of layers that are heated like the core or mantle ...
the outer layer of the Earth is the coolest layer and the core is the hottest at 5500 degrees Celsius.
The crust is by far the coolest.
The crust is the coolest in temperature
The coolest layer is the crust. The crust is on the surface of the earth (where we are). The further you go down the hotter it gets, the inner core that is at the center of the earth is as hot as the surface of the sun!
Generally, the lowest.
Photosphere
no the atmosphere is
The Exosphere is the coolest part of the atmosphere. I'm pretty sure this is the right answer.
The crust is the coolest layer on Earth. The hottest layer is the core, then the outer core, then the mantle.
The coolest thing is that it protects us from the harmful UV rays of the sun. These are fatal radiations of the sun.
It is the coolest layer of the Sun's atmosphere and when looking through it, you can see absorption spectrum lines.
the troposphere is the1st layer of the atmosphere. It is the coolest layer and the closest to Earth. Most of Earth's weather happens here.