Ozone Assessment Preview 2014
True False CFC’s are actually good because they break down the smog that plagues larger cities.
Wearing sunglasses may help prevent cataracts because of overexposure to ultraviolet radiation.
The production of CFC’s is now banned in most countries.
Ozone “holes” are areas of low concentrations of ozone in the stratosphere.
One Cl atom or bromine molecule can destroy thousands of ozone molecules. Ozone Assessment Preview 2014
Arrange the steps of Ozone production in order.
1 3
2 4 Ozone Assessment Preview 2014
The steps of Ozone production in proper order.
1 3
2 4 Ozone Assessment Preview 2014
Explain the difference between elemental oxygen, the oxygen we breathe and ozone.
Elemental oxygen: A single Oxygen atom (O), it does not filter UV radiation.
Oxygen we breathe: Two Oxygen atoms (O2) bonded together, they do not filter UV radiation.
Ozone: Three Oxygen atoms (O3) bonded together, this filters UV radiation up high in the stratosphere but harms us when it is in the troposphere down low. Ozone Assessment Preview 2014
True False
A polar vortex is required for ozone depletion to occur over the north and south poles.
The tropospheric ozone is good for us.
Ozone molecules destroy chlorofluorocarbon molecules.
The ozone layer filters out harmful bromine atoms.
Scientists say there is hole in the ozone layer over the equator.
Good ozone is on the rise while bad ozone is decreasing.
Ozone in the troposphere can contribute to greenhouse warming. Ozone Assessment Preview 2014
Explain why there is ozone depletion, creating “holes”, over the poles instead of over the equator.
1. Ozone and chlorine are trapped inside a polar vortex, created due to the very cold, stratospheric winds over the poles. 2. Sunlight breaks apart the CFC’s releasing the chlorine to break apart the ozone. 3. The ozone destruction continues until it warms enough to stop the polar vortex. 4. There is no vortex in the stratosphere over the equator because it is too warm so ozone depletion does not happen there. Ozone Assessment Preview 2014
Arrange the steps of Ozone breakdown in order. 1 4
2 5
3 6 Ozone Assessment Preview 2014
Arrange the steps of Ozone breakdown in order. 1 4
2 5
3 6 Ozone Assessment Preview 2014
Ozone is destroyed by ______.
a. NOx b. SOx c. CO2 d. CFC’s
The ______atom destroys ozone.
a CFC b. O3 c. C d. Cl Ozone Assessment Preview 2014
Stratospheric ozone protects us by absorbing UV radiation. True False Ozone is measured in Dobson Units.
Elemental oxygen and diatomic oxygen do not absorb ultraviolet radiation like ozone does.
Good ozone is located in the stratosphere.
The ozone layer acts as a shield between ultraviolet radiation and life on Earth.
The ozone layer filters out harmful carbon monoxide.
Repeated exposure to ozone pollution may cause permanent damage to the lungs. Ozone Assessment Preview 2014
True False CFC’s were first widely used in the United States in the 1950’s.
Wearing sunscreen helps protect you from overexposure to ultraviolet radiation.
Ozone in the stratosphere can help prevent skin cancer and cataracts.
Chlorofluorocarbons are making the ozone layer thicker.
Ozone depletion is occurring over Antarctica and the North Polar regions.
Ozone molecules destroy chlorofluorocarbon molecules.
Ozone Assessment Preview 2014
True False
Ozone depletion is occurring over both Antarctica (the South Pole) and the Arctic (North Pole) regions.
Ozone is measured in Dobson Units. Ozone Assessment Preview 2014
CFC’s were used in ______. a. air conditioners b. paint cans c. foam products d. all of these
Good ozone is located in the ______. a. troposphere b. stratosphere c. mesosphere Ozone Assessment Preview 2014