Atmospheric pollution

The video discusses Earth's atmosphere, focusing on the troposphere and stratosphere. It explains how human activities cause pollution in these layers, affecting the ozone layer and contributing to global warming. The video also covers acid rain, its causes, and effects, as well as particulate pollutants and smog, highlighting their impact on health and the environment.

Which layer of the atmosphere is closest to the Earth's surface?

• Stratosphere

• Mesosphere

• Troposphere

• Exosphere

What is the primary function of the ozone layer in the stratosphere?

• To reflect sunlight

• To produce oxygen

• To trap heat

• To absorb UV radiation

Which compound is primarily responsible for the depletion of the ozone layer?

• Carbon dioxide

• Methane

• Chlorofluorocarbons

• Nitrogen oxides

What is a major source of carbon monoxide in the troposphere?

• Photosynthesis

• Volcanic eruptions

• Burning fossil fuels

• Ocean evaporation

How does carbon monoxide affect human health?

• Improves cardiovascular health

• Enhances eyesight

• Forms a stable complex with hemoglobin

• Increases oxygen levels

What is the greenhouse effect?

• Cooling of Earth's surface

• Trapping of heat by atmospheric gases

• Reflection of sunlight

• Absorption of UV rays

Which gas is not considered a greenhouse gas?

• Carbon dioxide

• Methane

• Oxygen

• Water vapor

What causes rainwater to become acidic in polluted areas?

• Excessive sunlight

• High nitrogen content

• Presence of carbonic acid

• Increased oxygen levels

Which of the following is a particulate pollutant?

• Sulfur dioxide

• Carbon monoxide

• Methane

• Dust

What is a significant effect of acid rain on structures?

• Increases durability

• Causes corrosion

• Enhances color

• Strengthens metal