Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Consider the following statements about Shadow zones:

1. Seismic shadow zone is the zone on Earth's surface where seismographs don’t detect earthquakes because seismic waves don’t reach there.
2. The P- wave shadow zone does not receive any direct P waves as it gets refracted.
3. The S- wave shadow zone does not receive any direct S- waves because s-waves travel only in solid medium (outer core is in molten state).

Which of the following statement(s) is/are correct?

• A. 1 and 3 only
• B. 2 and 3 only
• C. 1, 2 and 3 only
• D. 1 and 2 only

Answer 1

The correct option is C 1, 2 and 3 only

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> SHADOW ZONE

Seismic shadow zone is the zone on Earth's surface where seismographs don’t detect earthquakes because seismic waves don’t reach there.
-The P- wave shadow zone does not receive any direct P waves as it gets refracted.
-The S- wave shadow zone does not receive any direct S- waves because s-waves travel only in solid medium. (outer core is in molten state).