Menu Close

What are the 5 stages of earthquake?

Admin

What are the 5 stages of earthquake?

The five stages of an earthquake are based on the elastic rebound theory, which geologist Henry Fielding Reid devised after the great 1906 San Francisco earthquake.

  • Elastic Buildup.
  • Dilatancy.
  • Influx of Water.
  • Earthquake.
  • Aftershocks.

What are important parts of an earthquake?

Anatomy of an Earthquake

  • Fault: A fracture in the rocks that make up the Earth’s crust.
  • Epicenter: The point at the surface of the Earth above the focus.
  • Plates: Massive rocks that make up the outer layer of the Earth’s surface and whose movement along faults triggers earthquakes.

What are 3 things that cause earthquakes?

5 Main Causes of Earthquakes

  • Volcanic Eruptions. The main cause of the earthquake is volcanic eruptions.
  • Tectonic Movements. The surface of the earth consists of some plates, comprising of the upper mantle.
  • Geological Faults.
  • Man-Made.
  • Minor Causes.

What are the 4 parts to an earthquake?

There are four different types of earthquakes: tectonic, volcanic, collapse and explosion.

What are the 7 Steps to earthquake Safety?

Seven Steps to Earthquake Safety

  1. Step 1 – Identify Hazards in the Home:
  2. Step 2 – Create Your Disaster Plan.
  3. Step 3 – Create Disaster Supply Kits.
  4. Step 4 – Identify Your Home’s Potential Weaknesses.
  5. Step 5 – Drop, Cover, and Hold On.
  6. Step 6 – After the Shaking Stops Check for Damages and Injuries Needing Immediate Attention.

What are the things to do during earthquake?

If you are indoors: “DROP, COVER, HOLD ON”

  • Stay inside.
  • Drop under heavy furniture such as a table, desk, bed or any solid furniture.
  • Cover your head and torso to prevent being hit by falling objects.
  • Hold onto the object that you are under so that you remain covered.

What’s the main cause of most earthquakes?

An earthquake is caused by a sudden slip on a fault. The tectonic plates are always slowly moving, but they get stuck at their edges due to friction. The primary boundary between these two plates is the San Andreas Fault. The San Andreas Fault is more than 650 miles long and extends to depths of at least 10 miles.

Where are earthquakes most common?

Pacific Ocean
Over 80 per cent of large earthquakes occur around the edges of the Pacific Ocean, an area known as the ‘Ring of Fire’; this where the Pacific plate is being subducted beneath the surrounding plates. The Ring of Fire is the most seismically and volcanically active zone in the world.

What is the main cause of an earthquake when the?

Earthquakes are usually caused when underground rock suddenly breaks and there is rapid motion along a fault. This sudden release of energy causes the seismic waves that make the ground shake. The earthquake starts at the focus, with slip continuing along the fault. The earthquake is over when the fault stops moving.

What is the Epicentre of an earthquake?

The epicenter is the point on the earth’s surface vertically above the hypocenter (or focus), point in the crust where a seismic rupture begins.

What are the 6 phases of earthquake drill?

Phase 1. ALARM.

  • Phase 2. RESPONSE.
  • Phase 3. EVACUATION.
  • Phase 4. ASSEMBLY.
  • Phase 5. HEAD COUNT.
  • Phase 6. EVALUATION.