Ozone Layer Depletion
Chemistry ⇒ Environmental Chemistry
Ozone Layer Depletion starts at 10 and continues till grade 12.
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See sample questions for grade 10
Describe one way individuals can help reduce ozone layer depletion.
Describe the catalytic cycle of chlorine in the destruction of ozone.
Describe the difference between ozone depletion and global warming.
Describe the role of ultraviolet (UV) light in the formation and destruction of ozone in the stratosphere.
Explain how ozone depletion affects marine ecosystems.
Explain why ozone is considered both 'good' and 'bad' depending on its location in the atmosphere.
Explain why the ozone layer is thinner over the poles, especially Antarctica.
Consider the following scenario: A country continues to use methyl bromide as a pesticide despite international agreements to phase it out. Discuss two potential environmental consequences of this action related to ozone layer depletion.
Which of the following best describes the process of ozone depletion?
(1) Ozone is created faster than it is destroyed
(2) Ozone is destroyed faster than it is created
(3) Ozone is not affected by human activities
(4) Ozone is only destroyed by natural processes
Which of the following gases can also contribute to ozone depletion?
(1) Nitrous oxide
(2) Methane
(3) Oxygen
(4) Carbon monoxide
Which of the following is a correct statement about the Montreal Protocol?
(1) It bans all greenhouse gases
(2) It aims to reduce the use of ozone-depleting substances
(3) It only applies to developed countries
(4) It was signed in 2010
Which of the following is a correct statement about the role of polar stratospheric clouds in ozone depletion?
(1) They prevent ozone destruction
(2) They provide a surface for chemical reactions that release chlorine
(3) They increase ozone production
(4) They have no effect on ozone
Fill in the blank: Ozone is formed in the stratosphere by the action of __________ radiation on oxygen molecules.
Fill in the blank: The chemical reaction that destroys ozone is catalyzed by __________ atoms released from CFCs.
Fill in the blank: The main element in CFCs responsible for ozone depletion is __________.
Fill in the blank: The main international treaty to protect the ozone layer is called the __________ Protocol.
True or False: Ozone depletion can be reversed if the use of ozone-depleting substances is stopped.
True or False: Ozone depletion can lead to an increase in the incidence of cataracts in humans.
True or False: Ozone depletion has no effect on plants.
True or False: Ozone in the troposphere is beneficial for humans.
