Tsunami

Question 1

Generated by sudden displacement of the seafloor

Answer 1

Tsunami

Question 2

Enumerate the parts of the wave

Answer 2

Wavelength, wave height, amplitude, frequency, velocity

Question 3

Distance between wave crest and wave troughs

Answer 3

Wavelength

Question 4

Normal ocean wavelengths have a typical length of ________.

Answer 4

100 m

Question 5

Tsunami have a typical wavelengths of ________.

Answer 5

500 km

Question 6

The rate at which a wave loses its energy is ________ related to its wavelength.

Answer 6

inversely

Question 7

Distance between the trough of the wave and the crest of the wave.

Answer 7

Wave Height

Question 8

Equal to 1/2 the wave height

Answer 8

Wave amplitude

Question 9

Amount of time it takes for one full wavelength to pass.

Answer 9

Wave frequency

Question 10

Wind-generated waves usually have period of ______________.

Answer 10

Five to twenty seconds

Question 11

Tsunami wave can have a time period of __________.

Answer 11

Ten minutes to Two Hours

Question 12

Normal ocean waves have a velocity of _______.

Answer 12

90 km/hr

Question 13

Tsunami have velocities up to _________.

Answer 13

950 km/hr

Question 14

Formula of wave velocity

Answer 14

Wave velocity is equal to the wavelength divided by the wave period.

Question 15

If the trough of the tsunami wave reaches the coast first, this is called ________.

Answer 15

Drawdown

Question 16

The term for the crest of the wave hits, sea level rises.

Answer 16

Run-up

Question 17

NOAA

Answer 17

National Oceanic and Atmospheric Administration

Question 18

What is Pacific Tsunami Warning Center

Answer 18

Consist of an international network of seismographic stations and tidal stations around the Pacific basin that can send information via satellite to the center located in Hawaii

Question 19

Enumerate tsunami safety rules

Answer 19

Keep calm and move to higher ground

Notice the rise or fall of coastal waters

Stay out of danger until an “all clear” is issued by a competent authority

Never go down to the beach to watch a tsunami

The upper floors of the building can provide a refuge

If you are in a ship, move your boat into a deeper water
Stay updated with the credible source

Question 19

List of Tsunami Network in the Philippines

Answer 19

Bolinao-TEWS
Dapa-JICA
Guimbal-SATREPS

Question 20

What is TEWS

Answer 20

Tsunami Early Warning Signs

Question 21

What is SATREPS

Answer 21

State of the Art Technologies to Strengthen Research and Response to Seismic, Volcanic and Tsunami Events, and Enhance Risk Management

Question 22

Enumerate the ways the tsunami can be generated.

Answer 22

Earthquakes
Volcanic eruptions
Landslide
Underwater explosion
Meteorite impacts
Collapse of underwater volcanoes

Question 23

Controlling factors of tsunami occurrence.

Answer 23

Epicenter
Magnitude
Type of displacement

Question 24

Tsunamis are generated along the _______ of the plates.

Answer 24

subduction boundaries

Question 25

How can volcanic eruptions cause tsunami?

Answer 25

Explosive eruptions can rapidly emplace pyroclastic flows into the water, landslides and debris avalanches produced by eruptions can rapidly move into water, and collapse of volcanoes to form calderas can suddenly displace the water. A large Plinian eruption column blasted pumice and ash up to 40 km into the atmosphere

Question 26

How can landslide cause tsunami?

Answer 26

Most of these landslides are generated by earthquakes or volcanic eruptions A debris avalanche fell into Lituya Bay, Alaska in 1958 causing a wave with a run up of about 60 m as measured by a zone completely stripped of vegetation

Question 27

How can an underwater explosion cause tsunami?

Answer 27

Human induced Nuclear testing by the United States in the Bikini Atoll in Marshall Islands in the 1940s and 1950s generated up to 30 m high tsunamis

Question 28

How can a meteorite impacts cause tsunamis?

Answer 28

While no historic examples of meteorite impacts are known to have produced a tsunami, the apparent impact of a meteorite at the end of the Cretaceous Period, about 65 million years ago near the tip of what is now the Yucatan Peninsula of Mexico, produced tsunami that left deposits all along the Gulf coast of Mexico and the United States