Earthquakes can cause significant damage to human structures and trigger tsunamis. Structures are designed to withstand seismic activity but the level of damage depends on the duration and intensity of shaking. The 2011 Tōhoku earthquake in Japan, measured at a magnitude 8.9, caused widespread damage including moving the city of Sendai over 8 feet and generating a tsunami over 4 kilometers high along the coast. Broken power lines and gas mains are also common due to collapsed buildings and pose fire and air quality hazards.

1. Earthquake Effects

2. Human Made Structures
 Structures are made to withstand earthquakes.
 They are made not only to not collapse but even protect
people.
 They were started for the millions of casualties in the
past were over 98%.

4. DAMAGE!
 The amount of damage done to a structure would have
to rely on the duration of the shake

6. Tsunamis
 Its no surprise that earthquakes cause tsunamis
 Their destructive and deadly force has wiped out many
cities
 Japan received a very nasty one last year

7. March 11, 2011
 Sendai, Japan an earthquake moved it about 8 feet
 The earthquakes magnitude was that of an 8.9
 The tsunami that was caused by this flooded more than
4 kilometers(2.5 miles)

8. Coastal flooding from the March 11, 2011 tsunami triggered by a
magnitude 8.9 earthquake off Japan's northeast coast can be seen in
this before/after image pair from the Multi-angle Imaging
SpectroRadiometer (MISR) instrument on NASA's Terra spacecraft.
Image credit:NASA/GSFC/LaRC/JPL

9. Broken electricity and gas lines
 With broken buildings and structures, comes broken
power lines and gas as well
 Usually, in the aftermath of an earthquake, that’s the
number 2 thing people call their insurance for to fix
 Hazards for this can be gas leaks which can lead to air
contamination as well as fires