Podcast
Questions and Answers
What is the term for the point directly above the focus on the earth's crust?
What is the term for the point directly above the focus on the earth's crust?
- Fault line
- Seismograph
- Epicentre (correct)
- Seismic waves
Which device is used to measure the movements of an earthquake?
Which device is used to measure the movements of an earthquake?
- Seismograph (correct)
- Epicentre
- Fault line
- Focus
Where do seismic waves originate during an earthquake?
Where do seismic waves originate during an earthquake?
- Fault line
- Focus (correct)
- Epicentre
- Seismograph
What is a tiny crack in the Earth's crust where earthquakes are likely to occur?
What is a tiny crack in the Earth's crust where earthquakes are likely to occur?
Which of the following terms is not related to the specific definitions provided in the Earthquake Glossary?
Which of the following terms is not related to the specific definitions provided in the Earthquake Glossary?
What primarily causes the vibrations during an earthquake?
What primarily causes the vibrations during an earthquake?
Which factor is least likely to contribute to the occurrence of an earthquake?
Which factor is least likely to contribute to the occurrence of an earthquake?
Which term refers to the exact location under the earth's surface where an earthquake begins?
Which term refers to the exact location under the earth's surface where an earthquake begins?
Which is NOT a common hazard associated with earthquakes?
Which is NOT a common hazard associated with earthquakes?
What is the primary cause of injuries during an earthquake?
What is the primary cause of injuries during an earthquake?
Which instrument is used to measure the magnitude of an earthquake?
Which instrument is used to measure the magnitude of an earthquake?
What type of buildings are designed to resist earthquakes by incorporating weights in their roofs?
What type of buildings are designed to resist earthquakes by incorporating weights in their roofs?
Which factor is not directly measured by the seismograph?
Which factor is not directly measured by the seismograph?
What is the function of the Mercalli Scale?
What is the function of the Mercalli Scale?
Which of the following is a preparation measure for earthquakes?
Which of the following is a preparation measure for earthquakes?
Which of the following is NOT part of the earthquake preparation measures mentioned?
Which of the following is NOT part of the earthquake preparation measures mentioned?
What is one characteristic of tropical storms?
What is one characteristic of tropical storms?
Which of the following best describes the practice drills conducted by school children for earthquake preparation?
Which of the following best describes the practice drills conducted by school children for earthquake preparation?
Which hazard from tropical storms is NOT listed?
Which hazard from tropical storms is NOT listed?
Which component is likely included in the design of earthquake-proof buildings?
Which component is likely included in the design of earthquake-proof buildings?
What is the primary function of a seismograph?
What is the primary function of a seismograph?
Which scale is used to measure the magnitude of an earthquake?
Which scale is used to measure the magnitude of an earthquake?
What characteristic is associated with the Mercalli Scale?
What characteristic is associated with the Mercalli Scale?
Why are emergency services pre-suited for earthquake preparation?
Why are emergency services pre-suited for earthquake preparation?
Which feature is NOT associated with earthquake-proof buildings?
Which feature is NOT associated with earthquake-proof buildings?
What was the minimum estimated death toll in Jemen due to earthquakes?
What was the minimum estimated death toll in Jemen due to earthquakes?
How high was the severe viris that caused significant flooding?
How high was the severe viris that caused significant flooding?
What was the maximum height of the tsunamis mentioned?
What was the maximum height of the tsunamis mentioned?
What category of environmental hazards is being discussed?
What category of environmental hazards is being discussed?
In which section would you find measures to mitigate the impact of the discussed hazards?
In which section would you find measures to mitigate the impact of the discussed hazards?
Which of the following factors primarily causes the rotational motion of a tropical storm?
Which of the following factors primarily causes the rotational motion of a tropical storm?
What is the typical wind speed of a tropical storm as noted in the text?
What is the typical wind speed of a tropical storm as noted in the text?
Which of the following is not a characteristic of a tropical storm?
Which of the following is not a characteristic of a tropical storm?
In addition to high wind speeds, what is another significant hazard of tropical storms?
In addition to high wind speeds, what is another significant hazard of tropical storms?
Which of the following best describes the atmospheric conditions at the centre of a tropical storm?
Which of the following best describes the atmospheric conditions at the centre of a tropical storm?
What is the purpose of weights in earthquake-proof buildings?
What is the purpose of weights in earthquake-proof buildings?
What does the Mercalli Scale measure?
What does the Mercalli Scale measure?
Which characteristic is not typical of a tropical storm?
Which characteristic is not typical of a tropical storm?
What is the Saffir Simpson Scale based on?
What is the Saffir Simpson Scale based on?
Which emergency drill is commonly practiced by school children to prepare for earthquakes?
Which emergency drill is commonly practiced by school children to prepare for earthquakes?
At what sea temperature do tropical storms typically start to form?
At what sea temperature do tropical storms typically start to form?
Which latitude range is most associated with the formation of tropical storms?
Which latitude range is most associated with the formation of tropical storms?
What atmospheric phenomenon forms large cumulonimbus clouds during tropical storm formation?
What atmospheric phenomenon forms large cumulonimbus clouds during tropical storm formation?
What process occurs in the eye of a tropical storm?
What process occurs in the eye of a tropical storm?
During which season are tropical sea temperatures typically highest, aiding in storm formation?
During which season are tropical sea temperatures typically highest, aiding in storm formation?
Which of the following is influenced by the Coriolis effect in a tropical storm?
Which of the following is influenced by the Coriolis effect in a tropical storm?
What wind speed categorizes a tropical storm on the Saffir-Simpson scale?
What wind speed categorizes a tropical storm on the Saffir-Simpson scale?
What is a common consequence of tropical storms?
What is a common consequence of tropical storms?
How does the Saffir-Simpson scale classify tropical storms?
How does the Saffir-Simpson scale classify tropical storms?
Which characteristic is NOT typically associated with tropical storms?
Which characteristic is NOT typically associated with tropical storms?
Study Notes
Earthquakes
- Shifting/vibration of the earth's crust occurs due to the movement of tectonic plates
- Focus: The point where the earthquake occurs (focus) and directly above it (epicentre) on the earth's crust
- Hazards and risks: Death, Injuries
Earthquake Glossary
- Focus: The point where the earthquake occurs
- Epicentre: Directly above the focus on the earth's crust
- Seismic waves: Start out at the focus and travel through the earth
- Seismograph: Measures the earthquake's movements
- Fault line: Where the earth's crust is cracked, and earthquakes are likely to occur
Seismic Waves
- Start out at the focus and travel through the earth
- Measures the earthquake's movements
Seismograph
- Measures the earthquake's movements
Fault Line
- Where the earth's crust is cracked, and earthquakes are likely to occur
Richter Scale
- Measures the magnitude of an earthquake event
- Every point increase is 10 times more powerful
- Recorded using seismographs
Mercalli Scale
- Measures the effect of an earthquake on a 12-point scale
- Observational scale of the effects
Earthquake Preparation
- Hospitals, emergency services, and residents practice
- Drills in public buildings
- School children practice evacuation like fire drills
Earthquake Proof Buildings
- Flutter-proof roofs
- Weights in the roof to prevent swaying
- Shock absorbers
Hazards and Impacts of Earthquakes
- Deaths
- Injuries
- Tsunamis
Case Study Examples
- Haiti - 2010
- Japan - 2011 - over 15,000 deaths
Tropical Storm Characteristics
- Low pressure centre
- High wind speed (120 km/h)
- Evolving motion, Coriolis effect
Hazards and Impacts of Tropical Storms
- Storm Surge
- Strong wind (120 km/h)
- Torrential rain and floods
Saffir-Simpson Scale
- 1 to 5 points, indicative of wind speed
- Surrounding destruction, wind speeds
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