Unit 3: Climate Change & Natural Disasters

Discuss the measures that can be taken to prepare for and mitigate the impact of natural disasters.

• Building flimsy infrastructure and not conducting any drills

• Keeping the community uninformed about disaster preparedness

• Creating emergency plans, conducting regular drills, and educating the community about disaster preparedness

• Ignoring the warnings and waiting for the disaster to pass

Answer explanation

The correct choice emphasizes proactive measures like creating emergency plans, conducting drills, and educating the community, which are essential for effective disaster preparedness and mitigation.

Natural Disasters such as, earthquakes, flooding, and volcanic eruptions can cause ...

• short term changes

• long term changes

How can communities reduce the risk of landslides?

• By ignoring early warning signs and natural indicators

• By deforesting hillsides and increasing construction

• By planting vegetation, controlling water drainage, and avoiding construction on steep slopes

• By increasing the weight on slopes with heavy machinery

What is the primary cause of earthquakes?

• Alien spacecraft landing on the earth's surface

• Global warming and climate change

• Large waves like tsunamis crashing on shore

• Movement of tectonic plates

Answer explanation

The primary cause of earthquakes is the movement of tectonic plates. These plates shift and interact at their boundaries, leading to the release of energy that causes seismic activity, resulting in earthquakes.

Describe the impact of flooding on the environment and human settlements.

• Flooding can cause damage to infrastructure, loss of life, displacement of people, contamination of water sources, destruction of crops, and loss of biodiversity.

• Flooding only affects human settlements, not the environment

• Flooding leads to increased biodiversity and improved water quality

• Flooding has no impact on the environment or human settlements

Answer explanation

Flooding significantly impacts both the environment and human settlements by causing infrastructure damage, loss of life, and displacement, while also contaminating water sources and destroying crops, leading to biodiversity loss.

How are tornadoes formed?

• Tornadoes are formed from powerful thunderstorms.

• Tornadoes are formed from volcanic eruptions.

• Tornadoes are formed from earthquakes.

• Tornadoes are formed from heavy rainfall.

Answer explanation

Tornadoes are formed from powerful thunderstorms, specifically supercell storms, where warm, moist air meets cold, dry air, creating strong wind currents that can rotate and develop into tornadoes.

Which of the following is a consequence of natural disasters on human populations?

• Increased technological development

• Decreased migration

• Increased economic stability

• Migration (or displacement) of communities

Which of the following is NOT a greenhouse gas?

• Carbon Dioxide

• Oxygen

• Methane

• Water Vapor

Which greenhouse gas makes up 70% of our Earth's surface and is necessary for life?

Explain the process of a volcanic eruption.

• Volcanic eruptions are caused by excessive rainfall

• Volcanic eruptions are caused by the centrifugal force of Earth's rotation

• Magma from within the Earth's mantle rises to the surface, causing pressure to build up and eventually leading to an explosive release of gases, ash, and lava.

• Volcanic eruptions occur when the moon is in a certain phase

Answer explanation

Volcanic eruptions occur when magma from the Earth's mantle rises, creating pressure. This pressure builds until it is released explosively, resulting in gases, ash, and lava being expelled from the volcano.