Science - polar explorer/earths atmosphere Flashcards
what are the five layers of the atmosphere?
1)troposphere 2)stratosphere 3)mesosphere 4)thermosphere 5)exosphere
what is the troposphere
lowest layer, where we live and where the weather occures
how far is the troposphere from earth?
About 12 kilometers and contains most of the atmospheres mass
what is the stratosphere?
contains the ozone later - absorbs harmful ultraviolet radiations from the sun
how far is the stratosphere from the earth?
about 12 to 50 kilometers away from the earths atmosphere
what is the mesosphere?
lies above the stratosphere - where meteors burn up creating shooting stars.
how far away is the mesosphere from the earth?
about 50 to 58 kilometers above the earths surface
what is the thermosphere?
it is characterized by high temperatures, though the air is very thin. Its where satellites orbit and where auroras (like the northern lights) occur
how far is the thermosphere from the earth?
between 85 and 600 kilimeters above the earths surface
what is the exosphere?
outer layer of the atmosphere, gradually fades into the outer space
how far is the exosphere from earth?
600 kilometers to 10,000 kilometers above the earths surface
what is the Karmar Line?
altitude where space air crafts leave
