Earthquakes produce P and S waves. The P waves are fast and of a higher frequency than S waves. P waves reach a point first and can pass through liquid media while S waves reach after and the lose much of their energy while passing liquid media. This is because S-waves are shear waves and require rigid/inelastic media for transmission.
During an earthquake, there is usually a shadow zone (where there is no destruction because S-waves did not reach) formed right above the epicenter of the earthquake. This is due to the fact that the S-waves were unable to transit through the liquid inner core of the earth before reaching the earth's surface. Only P-waves are registered in this shadow zone.
Answer:
bird
tortoise
Explanation:
<em>"different </em><em>beak</em><em> shapes". </em>Beaks are often associated with birds.
<em />
<em>"with different </em><em>shells</em><em>". </em>From the phrase and the one before <em>(The same for tortoises.)</em>, it is clear tortoises are the main topic.
Yes, since mexico even is at the edge of the earth i can say, it has everything in there too..
hope that this helps you. =)
