16 Questions
What should you do when entering damaged buildings after an earthquake?
Use stairs
Which of the following is a natural sign of an impending tsunami?
Strong wind blowing inland
What should you check for in your residence after an earthquake?
Water, gas, electrical lines
Which method can help make a building earthquake-resistant by absorbing seismic energy?
Flexible foundation
What is a common hazard associated with earthquakes that causes the ground to become unstable and move downhill?
Liquefaction
What is a common effect of earthquakes mentioned in the text?
Flooding
What should be done BEFORE an earthquake according to the text?
Know the earthquake hazards in your area
Which of the following is NOT recommended before an earthquake according to the text?
Leave heavy objects on high shelves
What should be secured to the wall before an earthquake?
Heavy furniture/cabinets
What are some items that should be stored properly BEFORE an earthquake?
Harmful chemicals and flammable materials
What is the definition of an earthquake?
A sudden displacement of rocks below the earth's surface resulting in ground shaking
Which type of earthquake is induced by rising lava or magma beneath active volcanoes?
Volcanic Earthquake
What is a fault?
A zone of weakness where displacement has occurred or may occur again
Which natural sign is indicative of an impending volcanic eruption?
Increase in intensity and frequency of volcanic earthquakes
What is the main cause of a tsunami?
Underwater explosion
What is the primary effect of liquefaction during an earthquake?
'Jelly-like' behavior of solid ground
Study Notes
Earthquake Hazards
- Effects of earthquakes include flooding, coastal erosion, drowning, and damage to properties
- Earthquakes can trigger tsunamis, as seen in the 1976 Moro Gulf earthquake
Preparing for an Earthquake
- Know the earthquake hazards in your area
- Strap or bolt heavy furniture/cabinets to the wall
- Check the stability of hanging objects like ceiling fans and chandeliers
- Store breakable items, harmful chemicals, and flammable materials in lowermost secured shelves
- Familiarize yourself with exit routes
- Know the location of fire extinguishers, first aid kits, alarms, and communication facilities
Understanding Earthquakes
- Earthquakes are a feeble shaking to violent trembling of the ground produced by the sudden displacement of rocks or rock materials below the earth’s surface
- There are two types of earthquakes: volcanic and tectonic
- In the Philippines, there is an average of 30 to 40 earthquakes per day
Types of Earthquakes
- Volcanic earthquakes are induced by rising lava or magma beneath active volcanoes
- Tectonic earthquakes are generated by the sudden displacement along faults in the solid and rigid layer of the earth
- Active faults are faults that have moved within the last 10,000 years
During an Earthquake
- Don't use elevators
- Don't enter damaged buildings
- Avoid using phones unless necessary
- PANIC (check yourself and others for injuries, and water, gas, electrical lines, and other parts of your residence for damages)
Making a Building Earthquake-Proof
- Create a flexible foundation
- Use vibrational control devices
- Utilize pendulum power
- Use earthquake-resistant materials
- Reinforce the building's structure
Learn about the effects of earthquakes like flooding, coastal erosion, and property damage. Explore important safety measures to take before, during, and after an earthquake, including securing heavy furniture and checking the stability of hanging objects.
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