Lesson 2 Natural Hazards

Typhoon is locally known as ________________________

• baha

• ulan

• bagyo

• buhawi

The _________________ is the area of lowest atmospheric pressure in the structure of the tropical cyclone.

• eyewall

• eye

• rain bands

• clouds

This is the localized unusual increase of sea water level which can be brought by a tropical cyclone.

• storm surge

• high tide

• flooding

• tsunami

When a tropical cyclone has caused 300 casualties or more than 1 billion worth of damage, it is removed from the list of typhoons because ________________.

• it might cause confusion

• it might bring back memories to survivors

• PAG-ASA just feels that it is time to change it

• first two choices are correct

Wind speed is 121 kph to 170 kph within the next 18 hours

• PSWS 1

• PSWS 2

• PSWS 3

• PSWS 4

An instrument used to detect and record earthquakes.

• seismic

• router

• seismograph

• ground shaking

It produce tremors that occur before or after an explosion. It is relatively not common unlike tectonic earthquake.

• Volcanic eruption

• plate

• after shock

• ground shaking

Occurs when trembling of earthquake cause of a soil to lose strength and flow.

• Volcanic eruption

• explosion earthquakes

• after shock

• .liquefaction

Movements within the earth’s crust cause stress to build up weakness and rocks to deform, also rocks breaking under stress.

• Volcanic eruption

• explosion earthquakes

• after shock

• Induced Ground Subsidence

A large wave in the ocean, usually cause by underwater volcanic eruption,earthquake,or coastal landslide

• tsunami

• explosion earthquakes

• Induced landslide

• Induced Ground Subsidence