Q1: How are Earthquakes measured? Earthquakes are recorded by a seismographic network. What level earthquake can destroy buildings?

5.5 to 6.0	Slight damage to buildings and other structures.
6.1 to 6.9	May cause a lot of damage in very populated areas.
7.0 to 7.9	Major earthquake. Serious damage.
8.0 or greater	Great earthquake. Can totally destroy communities near the epicenter.

Q2: What are the 3 waves given off by earthquakes and how are they different?

P-waves, S-waves, LOVE waves.

Q3: What ways are buildings earthquake-proofed? Give some examples e.g. The Burj Khalifa. How well does it work? create a flexible foundation, counter forces with damping, shield buildings from vibrations.

Q4: How are Tsunamis formed and are Tidal waves any different? Tsunamis are formed from earthquakes in the sea but tidal waves are caused by bad weather.

Q5: How do Tsunami warning systems work and what should you do when alerted? they detect earthquakes out at sea and if they think a tsunami will happen they let everyone know.