Earthquakes

A:

Most earthquakes occur along the boundaries between the Earth's tectonic plates. The crust of the Earth is divided into plates. When a plate collides with or slides past another plate, this causes earthquakes. For example, as the Pacific plate moves past the North American plate, many earthquakes occur along the coast of California.

See Full Answer
Filed Under:
  • How do you make an earthquake kit checklist?

    Q: How do you make an earthquake kit checklist?

    A: An emergency earthquake kit is a collection of items which are needed in the event of an earthquake. The Centers for Disease Control and Prevention and the American Red Cross offer comprehensive checklists to use as guides. Earthquake-kit checklists include extra clothes, food and water supplies, prescription drugs, over-the-counter medications, flashlights, batteries and first-aid tools, such as scissors, tweezers, bandages, sanitary napkins, needle and thread and a first-aid book.
    See Full Answer
    Filed Under:
  • When do earthquakes occur?

    Q: When do earthquakes occur?

    A: Earthquakes are usually triggered when rock located beneath the ground, on top of fault lines, breaks and suddenly releases a significant amount of energy. The immediate and rapid release of energy caused by earthquakes generates seismic waves, which cause shaking motions that start below the Earth’s surface and spread across large distances.
    See Full Answer
    Filed Under:
  • Where do most earthquakes occur?

    Q: Where do most earthquakes occur?

    A: Most earthquakes occur along the boundaries between the Earth's tectonic plates. The crust of the Earth is divided into plates. When a plate collides with or slides past another plate, this causes earthquakes. For example, as the Pacific plate moves past the North American plate, many earthquakes occur along the coast of California.
    See Full Answer
    Filed Under:
  • How do earthquakes affect the environment?

    Q: How do earthquakes affect the environment?

    A: Earthquakes have a number of profound effects on local ecosystems, but the most important effect earthquakes have is that they change habitats abruptly. Earthquakes can cause trees to fall, cliffs to crumble and caves to collapse, which can have trickle-down effects throughout the ecosystem.
    See Full Answer
    Filed Under:
  • In what region have damaging earthquakes been concentrated?

    Q: In what region have damaging earthquakes been concentrated?

    A: Roughly three quarters of the world's seismic energy is released in the form of earthquakes along the Pacific Ocean where it meets the western coasts of North, Central and South America. This seismic activity also reaches across the Pacific, where it manifests as earthquakes in Japan, the Philippines, China, Indonesia and Australia, according to the British Geological Survey.
    See Full Answer
    Filed Under:
  • Where do earthquakes form?

    Q: Where do earthquakes form?

    A: According to the U.S. Geological Society, the area in the Earth's crust where an earthquake forms is called the hypocenter. Unpredictable in nature, earthquakes form when energy from the crust is released, causing vibrations on the surface of the earth. The magnitude of earthquakes can vary exponentially, and the stronger the magnitude, the more devastating the effects, especially on areas that are near the epicenter.
    See Full Answer
    Filed Under:
  • What instruments are used to measure earthquakes?

    Q: What instruments are used to measure earthquakes?

    A: The seismograph and the seismoscope are the two main instruments used to measure the strength of earthquakes. The seismoscope is a simple instrument that measures the time that an earthquake takes place. The seismograph records the motion of the ground during an earthquake.
    See Full Answer
    Filed Under:
  • How often do earthquakes occur?

    Q: How often do earthquakes occur?

    A: Earthquakes happen daily across the United States, though they vary in magnitude. For instance, the United States had 3,836 earthquakes in 2012, but only five of them were above six on the Richter scale, and none of them exceeded seven.
    See Full Answer
    Filed Under:
  • What is a list of items you should include in an earthquake kit?

    Q: What is a list of items you should include in an earthquake kit?

    A: An adequate earthquake survival kit includes a first aid kit, a home survival kit, a car survival kit and a work survival kit. The first aid kit and home survival kit should have enough supplies to last for three days.
    See Full Answer
    Filed Under:
  • What are the effects of an earthquake?

    Q: What are the effects of an earthquake?

    A: The effects of an earthquake range from mild to severe and include structural damage, damaged gas lines, tidal waves, fires, avalanches and flooding. The amount of damage an earthquake can cause depends greatly on the size of the earthquake. The 1994 earthquake in Northridge, California was a magnitude 6.7, caused 57 deaths, 5,000 injuries, and damaged homes, bridges and structures.
    See Full Answer
    Filed Under:
  • What is the surface directly above where an earthquake starts called?

    Q: What is the surface directly above where an earthquake starts called?

    A: The surface directly above where an earthquake starts is called the epicenter, according to the United States Geological Survey. The location of the earthquake's origin is the fault or fault plane, and that is the place where two pieces of Earth move past each other, causing the ground to shake.
    See Full Answer
    Filed Under:
  • How do earthquakes cause damage ?

    Q: How do earthquakes cause damage ?

    A: Earthquakes cause direct damage when the seismic disturbance weakens and collapses buildings and other infrastructures not built to withstand the tremors. This often causes great loss of life. Other damage caused by earthquakes results from landslides, mudslides, avalanches, fires, soil liquefaction and tsunamis.
    See Full Answer
    Filed Under:
  • How do earthquakes occur?

    Q: How do earthquakes occur?

    A: Earthquakes occur when two blocks of earth suddenly slip past each other. This sudden release of energy causes the seismic waves that make the ground shake. The surface where they slip is known as the fault or fault plane.
    See Full Answer
    Filed Under:
  • What are some good and bad effects of earthquakes?

    Q: What are some good and bad effects of earthquakes?

    A: Earthquakes are extremely destructive, causing damage to property and triggering tsunamis, but they are also constructive forces creating mountains by the movement of tectonic plates. The earthquakes themselves are triggered by the movement of these plates, which causes movement and destruction on the Earth's surface.
    See Full Answer
    Filed Under:
  • What is the average number of earthquakes per year in Japan?

    Q: What is the average number of earthquakes per year in Japan?

    A: As of 2014, approximately 1,500 earthquakes strike Japan every year. According to the Royal Geographical Society, there are around 17 magnitude 7 — extremely strong — earthquakes that hit per year.
    See Full Answer
    Filed Under:
  • Why is there a minimum number of stations necessary to locate an epicenter?

    Q: Why is there a minimum number of stations necessary to locate an epicenter?

    A: Finding the epicenter of an earthquake requires coordination between at least three seismographs separated by, ideally, hundreds of miles. This is because a seismograph is only capable of registering the strength and amplitude of an earthquake, which together give the distance to the epicenter, not its direction.
    See Full Answer
    Filed Under:
  • How high does the Richter scale go?

    Q: How high does the Richter scale go?

    A: The Richter scale does not have an upper limit. The Richter scale is a logarithmic representation of the amount of energy released by an earthquake, or its magnitude. As of 2014, the earthquake that rated highest in recorded history was a 9.5-magnitude quake in Chile in 1960.
    See Full Answer
    Filed Under:
  • What country has the most earthquakes?

    Q: What country has the most earthquakes?

    A: Indonesia generally is considered to the country with the most earthquakes. Indonesia possesses this distinction because it lies in what is considered to be a highly active seismic zone.
    See Full Answer
    Filed Under:
  • What country has the largest recorded earthquake?

    Q: What country has the largest recorded earthquake?

    A: The largest recorded earthquake occurred in Chile in 1960. Measuring 9.5 on the Richter scale, it killed or injured 5,000 people, left 2 million homeless and damaged coasts along the Pacific Ocean. It may also have led to the eruption of the Puyehue volcano two days later.
    See Full Answer
    Filed Under:
  • Can we predict earthquakes?

    Q: Can we predict earthquakes?

    A: Scientists can make predictions about earthquake probability, but there is no reliable way to foresee any given earthquake. Some people have claimed that they can predict earthquakes, but their claims do not withstand scientific scrutiny.
    See Full Answer
    Filed Under:
  • What machine is used to measure earthquakes?

    Q: What machine is used to measure earthquakes?

    A: Geologists use a seismograph to detect and measure the strength of an earthquake. The modern-day seismograph was invented by John Milne in 1880 while he was studying earthquakes in Japan.
    See Full Answer
    Filed Under: