Natural Hazards

Question 1

as atmospheric, hydrologic, geologic (seismic and tectonic), and wildfire phenomena that have the potential to affect humans, their structures or their activities

Answer 1

Natural Hazards

Question 2

It is a region known for volcanic and seismic activities

Answer 2

Pacific Ring of Fire

Question 3

similar to mountain and hills, they are formed either converging of tectonic plates or the accumulation of materials that erupted through one or more openings on plates

Answer 3

Volcanic Eruptions

Question 4

It is the materials that accumulate and form volcanoes are molten rocks coming from below Earth’s surface, it is formed feep withing earth under high temperature

Answer 4

Magma

Question 5

Openings or cracks known as the?

Answer 5

Fissure Events

Question 6

These are molten rocks flowing out of volcanic vents

Answer 6

Lava

Question 7

Types of Volcanoes based on their shapes and sizes

Answer 7

•cinder
•composite
•Shield
•Calderas
•Plateaus

Question 8

It is when magma continues to move up and accumulates in one or more underground storage

Answer 8

Magma Reservoirs

Question 9

Classification of eruptions

Answer 9

•explosives
•non-explosives

Question 10

Volcanic materials ejected

Answer 10

Explosive

Question 11

Volcanic materials flow on the surface of volcano

Answer 11

Non-explosive

Question 12

Three common types of volcanic materials that eject or erupt from an active volcano

Answer 12

•lava
•tephra or pyroclastic materials
•gases

Question 13

may break onto the surface or flow rapidly down the volcano’s slope

Answer 13

Lava

Question 14

Rock fragments that ate thrown airborne during an explosive eruptions

Answer 14

Tephra or Pyroclastic materials

Question 15

Consists of water vapor, carbon dioxide and hydrogen flouride

Answer 15

Gases

Question 16

Gases can cause?

Answer 16

Acid rains

Question 17

Phivolcs classification of volcanoes in terms of frequency of eruption

Answer 17

Active Volcanoes
Potentially Active
Inactive Volacanoes

Question 18

refers to the movement or shaking of the ground on Earth’s crust.

Answer 18

Earthquake

Question 19

Earthquake may arise from the dynamix release of elastic strain energy that radiates seismic waves as explained in

Answer 19

Elastic Rebound Theory

Question 20

it is derived from the concept of a spring.

Answer 20

Elastic Rebound Theory

Question 21

The additional movements are called ?

Answer 21

Aftershocks

Question 22

Three major earthquake generators in the Philippines

Answer 22

Philippine Trench
Manila Trench
Philippine Fault Zone

Question 23

1320km located east of the Philippines

Answer 23

Philippine Trench

Question 24

560km located at west of Luzon

Answer 24

Manila Trench

Question 25

1200km across the archipelago

Answer 25

Philippine fault zone

Question 26

It is the movement or displacement of a mass of (soil, mud, rocks, debris) down a slope under the direct influence of gravity

Answer 26

Landslides

Question 27

Also known as rain related

Answer 27

Natural Hydrometerological Phenomena and Hazards

Question 28

Considered as two of the most destructive natural hazards because of the great damage and number of casualties that they caused

Answer 28

Typhoons and Hurricanes

Question 29

Developed in the Northwestern part of thr Pacific Ocean

Answer 29

Typhoons

Question 30

Forms in the central or northeastern part of the pacific or north atlantic

Answer 30

Hurricanes

Question 31

It is when the part of seafloor drops as direct result of an earthquake

Answer 31

Tsunami or harbor waves

Question 32

It is the abnormal rise of water brought about by a storm

Answer 32

Storm surge

Question 33

It is when an increase in the height of the water level known as

Answer 33

Tide

Question 34

During the storm the water level increases its height beyond the normal tide resulting in a?

Answer 34

Storm tide

Question 35

If the water moves in land it is referred to as?

Answer 35

Storm surge

Question 36

Types of floods

Answer 36

Areal flood
Coastal flood
Riverine flood
Urban flood

Question 37

They are associated with waves but different from ocean

Answer 37

Marine processes

Question 38

Waves that usually approach a shore obliquely and refract more parallel to it

Answer 38

Longshore drift

Question 39

It involves erosion transportation and deposition along coastal areas

Answer 39

Coastal processes

Question 40

Four main processes that cause coastal erosion

Answer 40

Corrososion
Hydraulic Action
Attrition
Corrosion