ha? Flashcards
About 99% of the atmosphere is composed of two gases
Oxygen & Nitrogen
TRUE OR FALSE: The composition of gases in the atmosphere is uniform
False: It is not uniform
(what) gases tend to rise to the top.
Lighter
Lowest layer
Troposphere
what later of the atmosphere is ozone located
Stratosphere
This is where we live and where Weather occurs
troposphere
Temp increases with height
stratosphere
Absorbs most of the damaging Ultraviolet sunlight (UV-B)
stratosphere
Majority of meteors burn up
Mesosphere
Very few molecules
Thermosphere
Trivia: High energy solar particles create excited N and O atoms, visible light results as electrons in these atoms fall from excited states to lower energy states.
It is where the aurora forms
Thermosphere
the rupture of a chemical bond reacting from absorption of a photon by a molecule.
Photodissociation
occurs when a molecule in the upper atmosphere absorbs solar radiation and the absorbed energy causes an electron to be ejected from the molecule.
Photoionization
causes electrons to be knocked out of molecules in the upper atmosphere; very little of this radiation reaches the earth’s surface.
Short wavelength radiation
TRUE OR FALSE: Oxygen has a much lower bond enthalpy than nitrogen and is therefore more reactive.
TRUE
unit of frequency
Hertz (Hz)
amount of energy needed to remove an electron.
Ionization Energy
is a ring of protective gases around the earth that absorbs harmful UV rays before they reach the surface.
Ozone Layer
Because Oxygen atom reacts with (what) so O + O2 = O3. And O3 is ozone.
Oxygen Molecules
rays are the most common and cause skin aging and wrinkling.
UVA
- (?) UV-A is absorbed while (?) % passes through the layer.
5% and 95%
rays cause sunburns, cataracts, and immune system damage.
UVB
95% is absorbed and 5% passes through
UVB