Ozone Layer and UV Quiz

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UV, ozone, health and environment

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Mark Cowan

Reino Unido

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Ozone Layer and UV Quiz


Ozone Layer and UV QuizVersión en línea UV, ozone, health and environment por Mark Cowan 1 Which atmospheric layer contains most of the Earth's ozone and at roughly what altitude? a Troposphere, about 1 km b Stratosphere, about 10 km c Mesosphere, about 50 km d Thermosphere, about 700 km 2 What is the primary protective role of the ozone layer? a Absorbs most of the sun's UV radiation, especially UVB b Reflets UV away from Earth c Increases infrared absorption for heat retention d Produces ozone, shielding Earth from gravity 3 What are ozone depleting substances commonly referred to as? a Greenhouse gases b Acid rain precursors c UV-blockers d ODSs (Ozone Depleting Substances) 4 Where was the ozone hole first observed in the 1970s? a Over the Sahara b Above Antarctica c Over the Amazon rainforest d Above the Arctic 5 UVB exposure is linked to which skin condition? a Psoriasis b Skin cancer (including non-melanoma and melanoma) c Dermatitis d Vitiligo 6 Approximately how many skin cancer deaths were attributed to UV exposure in 2012? a About 5,500 b About 550,000 c About 550 worldwide d About 55,000 worldwide 7 Which eye condition is associated with UV exposure? a Glaucoma b Cataracts c Retinopathy d Macular degeneration 8 What immunological effect can UV radiation have? a Only allergy worsening b No effect on immunity c Immune enhancement d Immunosuppression, affecting infectious disease patterns 9 How can UV radiation affect photosynthesis in nature? a Impairment of molecular chemistry of photosynthesis b No effect on plants c Only affects animals d Accelerates photosynthesis 10 What international agreement helped phase out many ozone-depleting substances? a Paris Agreement (2015) b stockholm Convention (2001) c Montreal Protocol (1987) d Kyoto Protocol (1997) Feedback 1 The ozone layer is in the stratosphere around 10 km altitude. 2 Ozone absorbs UV radiation, reducing UVB reaching Earth's surface. 3 ODSs are chemicals that reduce ozone in the stratosphere. 4 Scientists noted a pronounced ozone depletion above Antarctica. 5 UVB contributes to skin cancer development. 6 Global deaths from skin cancer related to UV exposure were around 55k in 2012. 7 UVB radiation has been linked to cataract formation. 8 UVR-induced immunosuppression can influence infections and autoimmunity. 9 UVR can disrupt photosynthetic chemistry in plants and phytoplankton. 10 The Montreal Protocol aimed to reduce ODSs and protect the ozone layer.

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Ozone Layer and UV Quiz

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Ozone Layer and UV QuizVersión en línea

por Mark Cowan

Which atmospheric layer contains most of the Earth's ozone and at roughly what altitude?

What is the primary protective role of the ozone layer?

What are ozone depleting substances commonly referred to as?

Where was the ozone hole first observed in the 1970s?

UVB exposure is linked to which skin condition?

Approximately how many skin cancer deaths were attributed to UV exposure in 2012?

Which eye condition is associated with UV exposure?

What immunological effect can UV radiation have?

How can UV radiation affect photosynthesis in nature?

What international agreement helped phase out many ozone-depleting substances?

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