complete ielts unit 9 geoengineering

What is the main reason humanity might consider geoengineering?

• To increase fish harvests
• To prevent heat waves
• To slow down rapid climate change
• To stop volcano eruptions

What does the term 'geoengineering' mean?

• Building new cities
• Intervening in Earth's climate
• Discovering new planets
• Improving agriculture techniques

Which method is mentioned in the video as a geoengineering technique?

• Planting more trees
• Stratospheric aerosol injection
• Building dams
• Using wind turbines

What natural event inspired the idea of stratospheric aerosol injection?

• Earthquake in Japan
• Tsunami in Indonesia
• Mount Pinatubo eruption
• Hurricane Katrina

What is the main purpose of stratospheric aerosol injection?

• To increase rainfall
• To block sunlight
• To trap more heat
• To reduce air pollution

What could be a negative side effect of aerosol injections?

• Increase in global temperatures
• Change in rainfall patterns
• More fish in the oceans
• Cleaner air in cities

Why is there a concern about the ozone layer in relation to geoengineering?

• Ozone can increase global warming
• Sulfur particles might damage the ozone layer
• Ozone causes acid rain
• The ozone layer will become thicker

What does 'termination shock' refer to in the context of geoengineering?

• Sudden stop of geoengineering causing rapid warming
• Immediate cooling of the planet
• Quick reduction of CO2 levels
• Abrupt increase in rainfall

Why might politicians and industries delay switching to a carbon-neutral economy if geoengineering is used?

• Geoengineering is cheaper
• Geoengineering is more effective
• Cooling effect gives a false sense of security
• Geoengineering eliminates CO2 emissions

What is the best-case scenario mentioned for using geoengineering?

• Complete stop of global warming
• Permanent solution to climate change
• Buying time to transition to cleaner energy
• Increasing fossil fuel usage