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WorksheetsΣεισμικά Κύματα
Total questions: 11
Worksheet time: 8mins
What causes earthquakes on Earth?
Sudden release of energy
Movement of tectonic plates
Both A and B
None of the above
What are the primary types of seismic waves?
Longitudinal waves
Transverse waves
Both A and B
Surface waves
Τι είναι η εστία ενός σεισμού;
The area around the point from which seismic waves seem to start.
The projection of the focus on the Earth's surface.
The distance between the focus and the epicenter.
The energy released by an earthquake.
What is the epicenter of an earthquake?
The area around the point from which seismic waves seem to start.
Η προβολή της εστίας στην επιφάνεια της γης
The distance between the focus and the epicenter.
The energy released by an earthquake.
What is the focal depth of an earthquake?
The area around the point from which seismic waves seem to start.
The projection of the focus on the Earth's surface.
The distance between the focus and the epicenter.
The energy released by an earthquake.
What does the magnitude of an earthquake indicate?
How strong an earthquake is.
The area around the point from which seismic waves seem to start.
The projection of the focus on the Earth's surface.
The distance between the focus and the epicenter.
What is the Richter scale used for?
To measure the energy released by an earthquake.
To determine the focal depth of an earthquake.
To find the epicenter of an earthquake.
To classify the types of seismic waves.
What does a magnitude of 1 indicate?
Not felt
Felt only under certain conditions
Slightly felt indoors
Moderately felt indoors
What is the maximum value on the Mercalli scale?
10
12
8
6
Most earthquakes occur due to the movements of the tectonic plates and are called tectonic earthquakes.
The next waves that arrive at a location are the transverse waves. They are slower but more powerful and destructive than the longitudinal waves and follow them on the seismogram.
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