Stratospheric ozone is a naturally-occurring gas that
filters the sun’s ultraviolet (UV) radiation
. This is typically regarded as ‘good’ ozone since it reduces the harmful effects of ultraviolet (UV-B) radiation. A diminished ozone layer allows more radiation to reach the Earth’s surface.
What is necessary for stratospheric ozone?
Stratospheric ozone is formed naturally by
chemical reactions involving solar ultraviolet radiation (sunlight) and oxygen molecules
, which make up 21% of the atmosphere. In the first step, solar ultraviolet radiation breaks apart one oxygen molecule (O2) to produce two oxygen atoms (2 O) (see Figure Q2-1).
What is the most important function of ozone?
Why is Ozone Layer important? Ozone
protects the Earth from harmful ultraviolet (UV) rays from the Sun
. Without the Ozone layer in the atmosphere, life on Earth would be very difficult.
What are the two types of ozone?
Ozone or “O3” is a colorless gas composed of three atoms of oxygen (O3). There are two types of ozone,
both “good” ozone and “bad” ozone
.
How is ozone layer helpful to us?
The ozone layer acts as
an invisible shield and protects us from harmful ultraviolet (UV) radiation from the sun
. In particular, the ozone layer protects us from the UV radiation, known as UV-B, which causes sunburn.
What is ozone and why is it important?
The ozone layer
acts as a shield for life on Earth
. Ozone is good at trapping a type of radiation called ultraviolet radiation, or UV light, which can penetrate organisms’ protective layers, like skin, damaging DNA molecules in plants and animals.
Is ozone good or bad?
Stratospheric ozone is
“good”
because it protects living things from ultraviolet radiation from the sun. Ground-level ozone, the topic of this website, is “bad” because it can trigger a variety of health problems, particularly for children, the elderly, and people of all ages who have lung diseases such as asthma.
How is ozone harmful to us?
How is Ozone Harmful? … When inhaled,
ozone can damage the lungs
. Relatively low amounts can cause chest pain, coughing, shortness of breath and throat irritation. Ozone may also worsen chronic respiratory diseases such as asthma and compromise the ability of the body to fight respiratory infections.
What is good ozone layer?
The
stratosphere
or “good” ozone layer extends upward from about 6 to 30 miles and protects life on Earth from the sun’s harmful ultraviolet (UV) rays. … There they are broken down by the intensity of the sun’s UV rays and release chlorine and bromine molecules, which destroy the “good” ozone.
How many layers of ozone are there?
Ozone is found in
two different layers
in Earth’s atmosphere.
What is harmful for ozone layer?
The main cause of ozone depletion and the ozone hole is manufactured chemicals, especially
manufactured halocarbon refrigerants, solvents, propellants, and foam- blowing agents
(chlorofluorocarbons (CFCs), HCFCs, halons), referred to as ozone-depleting substances (ODS).
Which answer best describes the role of ozone layer?
The ozone layer acts as
a shield for life on Earth
. Ozone is good at trapping a type of radiation called ultraviolet radiation, or UV light, which can penetrate organisms’ protective layers, like skin, damaging DNA molecules in plants and animals.
What is the hottest layer?
The thermosphere
is often considered the “hot layer” because it contains the warmest temperatures in the atmosphere. Temperature increases with height until the estimated top of the thermosphere at 500 km. Temperatures can reach as high as 2000 K or 1727 oC in this layer (Wallace and Hobbs 24).
Can ozone be created?
Ozone generators can create ozone artificially by means of
extremely high voltages
or by means of UV-light. Both methods involve the decomposition of the oxygen molecule. This causes oxygen radical formation. These oxygen radicals can bind to oxygen molecules, forming ozone (O
3
).
How is ozone different from oxygen?
Both diatomic ozone (O
2
) and triatomic ozone (O
3
) are made up of oxygen atoms but they have different chemical and physical properties.
Oxygen is odorless while ozone has
a strong, pungent odor. Ozone liquifies at -112 degrees Celsius while oxygen liquifies at a much lower temperature — -183 °C.
