An earthquake is a sudden release of energy in the Earth's crust that creates seismic waves. Seismic activity refers to the frequency, type, and size of earthquakes in a given period of time. Earthquakes are measured using seismometers and originate from a hypocenter or focus, located at the epicenter on the Earth's surface above the point of rupture. Earthquakes are typically caused by the rupture of geological faults, volcanic activity, landslides, mine blasts, or nuclear tests and can result in shaking, ground rupture, tsunamis, landslides, fires, flooding, and other damage. To survive an earthquake, one should prepare and remain calm during shaking.

2. Earthquake

3. What is an Earthquake?

Also known as quake, tremor or temblor

It is a sudden release of energy in the Earth's crust
that creates seismic waves.

4. Seismic Activity

Also known as seismicity or seismism.

It is the frequency, type and size of an earthquake
experienced over a period of time.

5. Seismometers

Instrument used to measure an earthquake.

6. Fault
 is a planar fracture or discontinuity in a
volume of rock, across which there has been
significant displacement along the fractures

7. Epicenter
 is the point on the Earth's surface that is
directly above the hypocenter or focus, the
point where an earthquake originates

8. What causes an earthquake?

Rupture of geological faults

Volcanic activity

Landslides

Mine blasts

Nuclear tests

9. What are the effects of an earthquake?

10. What are the effects of an earthquake?

Shaking and ground rupture

Landslides and avalanches

Fires

Soil liquefaction

Tsunami

Floods

Human impacts

11. How to survive an earthquake?

Prepare

Be calm

12. How to survive an earthquake?