Question detail
What is the consequence of increased UV radiation due to ozone depletion?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Halogenoalkanes
Question
- A. Improved crop yields
- B. Increased skin cancer rates
- C. Enhanced photosynthesis
- D. Lower global temperatures
Answer
Increased skin cancer rates
Explanation
The cause is the depletion of the ozone layer, which normally protects the Earth from harmful UV radiation. The mechanism involves the thinning of ozone allowing more UV rays to penetrate the atmosphere. The effect is an increase in UV radiation exposure to living organisms, particularly humans. The consequence is a rise in skin cancer rates and other health issues related to UV exposure.
Common mistake
Misunderstanding CFC Restrictions
Students often state that CFCs were banned solely because they deplete ozone without explaining the scientific evidence behind this decision.
To fix this, students should explain that the cause of the restrictions was the scientific evidence showing that CFCs release chlorine radicals in the atmosphere. This mechanism leads to the breakdown of ozone molecules, resulting in increased UV radiation reaching the Earth's surface, which can cause harmful effects such as skin cancer and environmental damage.
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