1. Estaba and grité
2. Visitaba and trabajaba
3. Estudiaba and gritaban
4. Dormía and sonó
5. Tiraban and barría
6. Cocinaba and lavaba
7. Leían and entró
8. Hacías and llamó
9. Pidió and charlaba
1) Answer: S-waves, also known as secondary waves.
2) Answer: Seismic stations located at increasing distances from the earthquake epicenter will record seismic waves that have traveled though increasing depths in the Earth.
3) Answer: P waves.
4) Answer: Surface waves.
5) Answer: shear waves.
7) Answer: Travelling only through the crust, surface waves are of a lower frequency than body waves, and are easily distinguished on a seismogram as a result.
8) Answer: Rayleigh waves.
sorry couldn't answer 9 and 10.
