Which of the following is the correct definition of a geologic hazard?

A hazard originating from natural processes such as earthquakes, volcanic eruptions, and landslides.

A type of hazard caused solely by human activities, such as pollution.

A hazard related to waterborne diseases.

A hazard caused by extreme weather changes such as typhoons and intense heat.

Which of the following is the most appropriate description of a "geologic hazard" as a component of Earth Science?

This includes risks caused by landslides, ground movement and strong earthquakes.

This refers to any hazard caused by human activity in the environment.

A geologic hazard is any threat originating from the wind and clouds.

Geologic Hazards - Starter Quiz (English (US))

Geologic Hazards - Starter Quiz

Geologic Hazards

Geologic Processes. Where do geologic hazards usually occur? From the previous chapter, it has been discussed that the surface of Earth is made up of lithospheric plates that are moving on top of the asthenosphere. These movements along the different kinds of plate boundaries are the cause of the natural geologic phenomena such as earthquakes and volcanic eruptions. Earthquakes An earthquake is the minimal to rapid shaking of the ground due to the movement of rocks along fractures, known as faults, on Earth's surface. These faults are usually associated with the parallel movement of plates in a transform fault. As the plates move, rock deformation occurs and energy starts to build up. When the rocks break, energy is released, resulting in an earthquake. The Philippines is prone to earthquakes because of the numerous faults within the country. Therefore, it is already given that the Philippines would experience a lot of geologic hazards.

Module 9 Geologic Hazards (Complex)

Module 9 Geologic Hazards (Basic)

Mitigation and Adaptation. The Philippines is situated in a disaster risk area where hazards will always be present. The government's response to mitigate and adapt to these hazards is through the creation of hazard maps. Hazard maps are developed to indicate the places where most natural hazards occur or will most likely occur. Identifying these places can aid in informed land-use and the persons-in-charge can create emergency response plans. With the proper knowledge of hazards and the actions to be taken if ever they occur will help in the reduction and mitigation of the dangers of these natural hazards to life and property. In the Philippines, the Department of Environment and Natural Resources (DENR) created a Geohazard Mapping and Assessment Program implemented by the Mines and Geosciences Bureau, which identifies areas vulnerable to geologic hazards or geohazard. They are also responsible for developing the hazard maps. High susceptibility to landslide. • Areas with high susceptibility rating have active/recent landslides and tension cracks that would directly affect the community. Those with steep slopes and drainages that are prone to landslide damming are also highly susceptible to landslides. Moderate susceptibility to landslide. • Areas with moderate landslide susceptibility rating have inactive/old landslide and tension cracks which are located away from the community. These areas usually have moderate slopes. Low susceptibility to landslide . • Areas with low to gentle slopes and lacking tension cracks have low landslide susceptibility rating. High susceptibility to flooding . • Areas with greater than 1-meter flood height. These areas are usually flooded for several hours during heavy rains include landforms of topographic lows such as active river channels, abandoned river channels and areas along river banks; also prone to flashfloods. Low to moderate susceptibility to flooding. • Areas with less than 10-meter flood height. These are usually inundated during prolonged and extensive heavy rainfall or extreme condition. Aside from the development of hazard maps, action plans should be conceptualized to identify the priorities for action and plan for the possible impacts affecting the country. Local programs should be established to help the people who are most affected by natural disasters to recover from their losses. Such programs can include training the people to innovate and think out of the box to come up with ideas or solutions that will be more effective for their livelihood. Education is also a means for people to mitigate and adapt to natural hazards. It can increase mass awareness regarding natural hazards; thus, increasing their chances of survival. It is also a means of promoting access to information and resources that will help individuals be better prepared for natural hazards. Lastly, formal education can empower individuals to be more adaptive with their responses to and recovery from natural hazards. In preparation for natural hazards, information regarding what to do before during, and after a natural hazard is disseminated all over the country. The following are the things to do to be prepared for each natural hazard..

Chapter: Lesson no. 17 Natural Hazards, Mitigation and Adaptation: Geologic Processes and Hazards 3

Chapter 3: Lesson no. 16 Natural Hazards, Mitigation and Adaptation: Geologic Processes and Hazards 2

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