Tsunamis
Tsunamis are largest when what two conditions are met?
1. The earthquake that created it is shallow (either on land or underwater), and...
2. It is a strong earthquake
Name three other natural hazards besides tsunamis.
Earthquakes, volcanic eruptions, landslides, any kind of flooding, thunderstorms, hurricanes, tornadoes, winter storms, wildfires, droughts, sandstorms, etc.
Which one had the highest ranking for blocking waves?
Recurved wall
Which one happens first:
1. A tsunami hits the shore
2. A warning alert is sent out to local residents
3. An underwater earthquake happens
An underwater earthquake happens
A series of large waves usually created by underwater earthquakes.
Tsunami
Name two things that can create tsunamis.
1. Underwater earthquakes (or close to shoreline)
2. Underwater volcanic eruptions
3. Meteor impacts
4. Landslides
Why would people in Nebraska and Iowa not have to worry about hurricanes?
Because they are nowhere near a coastline.
How did two breakwaters in Kamaishi cause MORE destruction in Ryoishi Bay?
Name two ways messages used to be sent out to people warning them of danger.
Smoke or fire signals
Telegraphs
Telephone
Loudspeaker
Radio
The protective device in Ryoishi Bay that was destroyed by the tsunami.
Seawall
What two things act like breakwaters, protecting the east coast of the US against most tsunamis?
The southern tips of South America and Africa
Why would people in Florida not have to worry about volcanic eruptions?
Because they are nowhere near a volcano.
If you're REALLY trying to save lives and property in a tsunami, you need two really good things. What are they?
Barriers and alert systems
Name two stakeholders when the Paramus Park Mall decided that anyone under 18 had to be with an adult on Friday and Saturday nights.
1. Police
2. Kids
3. Parents
4. Store owners
5. Mall management
A device that measures the strength of earthquakes.
Seismometer
How fast can tsunami waves travel?
Around 500 miles per hour!
How do you protect yourself from a landslide?
Get out of the way! (Other than that, there is nothing you can do.)
What are local governments trying to BUY when a tsunami happens? (Hint: It's not alert systems, any kind of barrier, insurance, etc.)
TIME (extra minutes can save thousands of lives)
Why are tsunami drills in schools so important in Japan, but not here in New Jersey?
We don't really get tsunamis in New Jersey, but they do get them sometimes in Japan.
A device that sits on the ocean floor to measure tsunamis.
Tsunameter
Why do most earthquakes and tsunamis happen along the Pacific Ring of Fire?
Because the Pacific plate (the largest plate and largest ocean) is constantly moving against the other plates surrounding it, causing earthquakes and sometimes tsunamis
If a tsunami is coming, name two things you can do to protect yourself.
1. Get to higher ground
2. Already have an evacuation route
3. Run!
If a local government really wants to save lives and property in a tsunami, then why don't they just use all 8 possible solutions (levee, recurved wall, mangrove forest, etc.)
Because not all of them work in one particular area (example: Ryoishi Bay is too cold for mangrove forests to grow, and using tetrapods are not exactly pretty in areas where there's lots of tourism), and it's expensive to use all 8
Why do levees not always work in tsunamis and floods?
Because there's too much water
When an area has received almost no precipitation and is very dry, the area is in a ...
Drought