Podcast
Questions and Answers
Which of the following best describes a natural hazard?
Which of the following best describes a natural hazard?
- A planned event in the environment
- A scientific experiment conducted in a laboratory
- A construction project in a rural area
- An event or phenomenon that poses a threat to human life or property (correct)
Understanding natural hazards is not essential for taking steps to reduce their impact.
Understanding natural hazards is not essential for taking steps to reduce their impact.
False (B)
What are the hazards associated with earthquakes?
What are the hazards associated with earthquakes?
landslides, liquefaction, and tsunamis
Hazards associated with earthquakes can cause damage to buildings, infrastructure, and even result in loss of _______.
Hazards associated with earthquakes can cause damage to buildings, infrastructure, and even result in loss of _______.
What is a primary way that building codes help mitigate the impact of earthquakes?
What is a primary way that building codes help mitigate the impact of earthquakes?
Early warning systems for earthquakes are ineffective and cannot alert people of an impending earthquake.
Early warning systems for earthquakes are ineffective and cannot alert people of an impending earthquake.
What measures can reduce the impact of earthquakes?
What measures can reduce the impact of earthquakes?
A volcano is a __________ in the Earth's crust that allows hot magma, ash, and gas to escape from beneath the surface.
A volcano is a __________ in the Earth's crust that allows hot magma, ash, and gas to escape from beneath the surface.
Which of the following is a hazard associated with volcanic eruptions?
Which of the following is a hazard associated with volcanic eruptions?
Volcanic ash only affects areas close to the volcano and does not disrupt air travel.
Volcanic ash only affects areas close to the volcano and does not disrupt air travel.
What health effects can gas emissions from volcanoes have?
What health effects can gas emissions from volcanoes have?
Fast-moving mudflows caused by volcanic ash mixing with water are called _________.
Fast-moving mudflows caused by volcanic ash mixing with water are called _________.
What is the purpose of monitoring volcanoes and issuing warnings?
What is the purpose of monitoring volcanoes and issuing warnings?
Coordination is not essential during a volcanic event.
Coordination is not essential during a volcanic event.
What leads to a landslide?
What leads to a landslide?
Landslides are the movement of _______, debris, or earth down a slope under the influence of gravity.
Landslides are the movement of _______, debris, or earth down a slope under the influence of gravity.
Which of the following can cause landslides?
Which of the following can cause landslides?
Landslides only result from natural causes and are not influenced by human activities.
Landslides only result from natural causes and are not influenced by human activities.
What are the hazards associated with landslides?
What are the hazards associated with landslides?
Landslides can lead to the destruction of natural habitats and ecosystems, causing long-term __________ damage.
Landslides can lead to the destruction of natural habitats and ecosystems, causing long-term __________ damage.
What measures can be taken to reduce landslide risk?
What measures can be taken to reduce landslide risk?
Modifying slope geometry is not an effective way to mitigate landslide risk.
Modifying slope geometry is not an effective way to mitigate landslide risk.
What is the use of remote sensing of rainfall?
What is the use of remote sensing of rainfall?
Using remote sensing of rainfall is important to ________ landslides and give warnings.
Using remote sensing of rainfall is important to ________ landslides and give warnings.
Match the natural hazard with a suitable mitigation strategy:
Match the natural hazard with a suitable mitigation strategy:
Which factor increases vulnerability to natural hazards?
Which factor increases vulnerability to natural hazards?
Natural hazards only affect developing countries.
Natural hazards only affect developing countries.
What is the initial release of energy in the Earth's crust a cause of?
What is the initial release of energy in the Earth's crust a cause of?
________ codes ensure that buildings are designed to withstand seismic activity
________ codes ensure that buildings are designed to withstand seismic activity
How can the impact of future earthquakes be lessened?
How can the impact of future earthquakes be lessened?
Molten rock that flows from a volcano and can destroy anything in its path is called pyroclastic flow.
Molten rock that flows from a volcano and can destroy anything in its path is called pyroclastic flow.
The mixture of what, can travel at high speeds?
The mixture of what, can travel at high speeds?
Volcanic gases such as _______ dioxide and carbon dioxide can have harmful health effects and contribute to climate change
Volcanic gases such as _______ dioxide and carbon dioxide can have harmful health effects and contribute to climate change
During a volcanic event, which of the following is essential?
During a volcanic event, which of the following is essential?
Landslides are the movement of rock, debris, or earth down a slope without the influence of gravity.
Landslides are the movement of rock, debris, or earth down a slope without the influence of gravity.
What factor plays into landslides?
What factor plays into landslides?
Landslides can also lead to the destruction of habitats and ecosystems, resulting in long-term and terrible __________ damage.
Landslides can also lead to the destruction of habitats and ecosystems, resulting in long-term and terrible __________ damage.
What property should you prepare when thinking about landslide risk?
What property should you prepare when thinking about landslide risk?
The debris pathways should not be diverted during a landslide.
The debris pathways should not be diverted during a landslide.
Match the term to its meaning:
Match the term to its meaning:
Flashcards
Natural Hazards
Natural Hazards
Events or phenomena that occur in the environment posing a threat to human life, health, property, or the environment.
Earthquakes
Earthquakes
A powerful and destructive natural hazard caused by a sudden release of energy in the Earth's crust.
Earthquake Mitigation
Earthquake Mitigation
Building codes designed to withstand seismic activity.
Volcanic Eruption
Volcanic Eruption
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Lava Flows
Lava Flows
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Pyroclastic Flows
Pyroclastic Flows
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Ash Fall
Ash Fall
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Lahars
Lahars
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Volcanic Eruption Mitigation
Volcanic Eruption Mitigation
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Landslides
Landslides
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Landslide Mitigation
Landslide Mitigation
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Study Notes
- Natural hazards are events or phenomena in the environment that threaten human life, health, property, or the environment
- Understanding natural hazards is important to reduce their impact and protect communities
Lesson Objective
- Understand the hazards associated with earthquakes, volcanic eruptions, and landslides
- Identify strategies to reduce the impact of these events
Earthquakes
- Earthquakes are powerful, destructive natural hazards caused by a sudden release of energy in the Earth's crust
- Associated hazards include landslides, liquefaction, and tsunamis
- Cause damage to buildings and infrastructure, and can cause loss of life
Earthquake Impact Mitigation
- Building codes ensure structures can withstand seismic activity
- Early warning systems can alert people to impending earthquakes
- Proper planning, preparation, and response can reduce the impact of earthquakes
Volcanic Eruptions
- A volcano is a rupture in Earth's crust that allows hot magma, ash, and gas to escape
Hazards of Volcanic Eruption
- Lava flows are molten rock flows that destroy everything in their path
- Pyroclastic flows are mixtures of hot gas and volcanic material that travel at high speeds
- Ash fall can cause respiratory problems, damage buildings, and disrupt air travel
- Lahars are fast-moving mudflows of volcanic ash and water
- Volcanic gases, like sulfur dioxide and carbon dioxide, have negative health effects and contribute to climate change
Volcanic Eruption Impact Mitigation
- Monitor volcanoes, issue warnings, and understand eruption types and hazards
- Preparation, response, and coordination are crucial during a volcanic event
Landslides
- Landslides are the movement of rock, debris, or earth down a slope due to gravity
- Causes include heavy rainfall, earthquakes, volcanic activity, human activities, and erosion
Hazards Associated with Landslides
- Hazards include property damage, loss of life, and disruption of transportation and communication
- Landslides can destroy natural habitats and ecosystems, causing long-term environmental damage
Landslide Impact Mitigation
- Reduce landslide risk by preparing property and using structures
- Modify slope geometry, divert debris pathways, and reroute drainage
- Use remote sensing of rainfall to predict landslides and give warnings
Conclusion
- Identifying potential natural hazards helps us make informed decisions
- These actions can mitigate the harmful impacts of Earth's natural processes
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