Fig 7. The Earth and its atmosphere
WORD BOX
CO2
Mesosphere
Earth's surface
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Solar Radiation
Exosphere
Greenhouse Effect
Stratosphere
Troposphere
Thermosphere
Greenhouse gases
The Earth is protected by a blanket of air called atmosphere which is compras of
five distinct layers. The layer closest to the Earth is the (1) where weather patterns
occur and contain the air we breathe. As it edends 50 kon above the ground, another
layer is called (2) where ozone layer exists and where
weather balloons are found. Moving higher until 85 km, the (3)
_s found where
burning of meteors happen. Air in this layer is very thin and cold. The layer above the
mesosphere is called the (4)_. It is often considered the hot layer because a
contains the wamest temperatures in the atmosphere. The actual "final frontier of
Earth's gaseous envelope is the last layer called (5)
The Sun's rays enter the Earth's atmosphere as (6)
This radiation in a form of
heat is reflected back to space or absorbed by the (7)_ and is trapped in the
atmosphere. Some of it reaches the (8)_Where it is absorbed by the ocean and
land. The Earth also releases heat back toward the space called (9)_. Some of this
heat successfully escapes back into space and a portion of it is retained by greenhouse
gases. The heat goes back down to warm the surface. This process is called (10)
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