Acid rain

The video explains how burning fossil fuels leads to acid rain, which is much more acidic than natural rain due to sulfuric and nitric acids. It details the chemical processes that form these acids and their harmful effects on the environment, including soil and living organisms. The video also highlights the significant increase in acidity when pH levels drop.

How much more acidic is acid rain compared to normal rain?

• 10 times

• 2 times

• 1,000 times

• 100 times

What is the main source of sulfuric acid in acid rain?

• Industrial chemical waste

• Exhaust pipes of vehicles

• Burning of coal and oil

• Natural volcanic activity

What happens to sulfur atoms in plants when they die and form fossil fuels?

• They remain bonded to carbon atoms

• They become part of the soil

• They dissolve in water

• They evaporate into the atmosphere

How do nitrogen oxides contribute to acid rain?

• They neutralize the acidity of rain

• They react with oxygen to form nitric acid

• They dissolve directly in rainwater

• They react with sulfur dioxide

What effect does acid rain have on limestone soils?

• It makes them more acidic

• It makes them more alkaline

• It neutralizes the acidity

• It has no effect

Why do living organisms struggle to grow in acidic conditions?

• Enzymes cannot function properly

• Acidic conditions promote mold growth

• Acidic conditions increase temperature

• Acidic conditions reduce sunlight

What happens to essential metal ions in acidic soil?

• They are absorbed by plants

• They become toxic

• They are washed away into subsoil

• They become more concentrated