Preparing for Calamities

CD2 M33 - August 25, 2017

LESSON 1

Preparing for Typhoons

• A typhoon is a very strong storm in the tropical regions accompanied by continuous rains and very strong winds

• Typhoons cause damage to people, crops, properties and aquatic ecosystems

• The heavy rains that accompany typhoons cause flood and soil erosions

• We cannot prevent typhoons from coming but we can take measures before, during, and after a typhoon to lessen the damage that it cause

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LESSON 2

Volcanic Eruptions and Earthquakes

• Both volcanic eruptions and earthquakes pose danger to people, properties and livelihood

• A volcano is a hill or mountain which formed around an opening at the Earth's surface called a vent

• When there is too much pressure in the magma chamber, a volcano begins to erupt. When the magma reaches the Earth's surface, it is called lava

• Volcanoes can be classified as active or inactive. There are records of the eruption of active volcanoes, while there is none for the inactive ones

• Some of the many effects of volcanic eruption are ashfall, lahar or mudflow, flood and soil erosion

• An earthquake is a shaking or trembling of the Earth's surface due to volcanic activity or the movement of tectonic plates

• An earthquake is either volcanic or tectonic. A volcanic earthquake occurs due to volcanic eruption, while a tectonic earthquake is caused by the movement of tectnoic plates under the ground

• Faults resists the forces that move the tectonic plates When the sides of the fault slide past each other, an earthquake occurs

• To lessen the damage that volcanic eruptions and earthquakes might cause., there are measures that you can take before, during, and after they actually happen

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LESSON 3

Tsunamis, Landslides, and Liquefaction

• Calamities such as typhoons, volcanic eruptions and earthquakes cause other calamities like tsunami, liquefaction and landslides

• Tsunami is a series of giant waves that are caused by underwater volcanic eruption, earthquake or landslide. When there is a tsunami, you should evacuate to a higher place

• Liquefaction occurs when the soil behaves more like a liquid than a solid. It is because the soil particles moved away from one another due to the pressure of the water between them

• The downward movement of a moss of soil i called a landslide. It happens when the soil becomes unstable due to the shaking caused by an earthquake. Sometimes it is also because heavy rains easily carried the soil away, especially if there are not enough trees to hold the soil

• To avoid the dangers of liquefaction and landslide, consult a geologist to find out if the place you built or will build your house on is safe