Advertisements
Advertisements
Question
What is known as seismic focus and epicenter with respect to an earthquake?
Solution
The point of origin of earthquake waves is called seismic focus and the center vertically above the seismic focus nearest to the earth’s crust is called the epicentre.
APPEARS IN
RELATED QUESTIONS
Identify and name the internal movement.
Molten magma is thrown out of the earth’s mantle.
Arrange the following statements in chronological order in which an earthquake occurs.
- The earth’s surface vibrates.
- The plates suddenly move.
- Due to the movements in the mantle, compression goes on increasing.
- Along the weak points ( faultlines) rocks break apart.
- Stored energy is released in the form of seismic waves.
Fill in the blank:
___________ are the first earthquake waves to be recorded on a seismograph of an earthquake.
What is known as the Richter scale? State its uses.
Is it possible to predict an earthquake? Give reasons to support your answer.
Describe the world’s distribution of earthquakes.
Earthquakes occur in the Mid-Atlantic belt.
What was the cause of the Koyna earthquake in India?
Describe the main type of Earthquake Waves.
Why are earthquakes related to volcanoes?
Answer the following:
A volcanic eruption is one of the main causes of earthquakes.
Give one word for the following :
The surface position immediately above the origin of an earthquake.
The earthquake is measured by the ______ scale.
The earthquake is a ______ activity.
How the earthquake can be recorded?
Name the point where the vibrations originate in an earthquake.
What is the point of the earth’s surface directly above the focus called?
