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All About the Atmosphere

Across
The aurora borealis is seen in the _______ Hemisphere.
A phenomenon that occurs in the lower region of the thermosphere
The layer of atmosphere closest to the Earth and where all weather occurs
The entire earth is surrounded by an ______ field that protects the earth from harmful space particles.
The layer of the atmosphere that helps protect the earth from being bombarded with meteoroids is the ______.
The air in the two upper layers of the atmosphere is said to be ______ because there are very few air molecules.
78% of the gas in our air
Down
A light display seen near the poles caused by the collisions of particles from the solar wind with molecules of air
The topmost layer of the atmosphere
Layer of the stratosphere that helps protect the earth from ultraviolet rays