DRRR

These flashcards cover key terms and concepts related to earthquakes and earthquake preparedness.

Earthquake

An unexpected and rapid shaking of the earth due to the breakage and shifting of layers underneath.

Tectonic Plates

Large pieces of the earth's lithosphere that move and interact, causing seismic activity.

Foreshocks

Light tremors that occur before the main earthquake.

Aftershocks

Tremors that occur after the main earthquake.

Preparedness

Having a plan and the necessary resources in case of an emergency, such as an earthquake.

Survival Kit

A collection of essential items to sustain life during emergencies, such as food, water, and first-aid supplies.

Vulnerability

The susceptibility of a region, like the Philippines along the Pacific Ring of Fire, to geological hazards.

Earthquake Drills

Practices conducted to prepare individuals for an earthquake, ensuring they know safety procedures.

Drop, Cover, and Hold

A safety procedure to follow during an earthquake: drop to the floor, cover your head, and hold on to a sturdy object.

Evacuation Plans

Procedures and locations designated for safe exit from a building or area during a disaster.

Tsunami

A tsunami is a wave or series of waves caused by a sudden displacement of sea or lake water

Common causes of tsunami

Undersea earthquakes, volcanic eruptions, and landslides

Volcanic eruption

A volcano rupture in the earth’s crust where liquefied rock(lava) erupts.

Volcanic gasses

Released from magma or underground vents. Harmful to humans.

Lahar

Flow of hot or cold water mixed with rock debris down river valleys.

Ash fall

Tiny jagged rock and glass particles ejected during the eruptions

Pyroclastic Flow

High density, fast moving mixture of hot gasses and rock fragments.

Lava flows

Molten rock from eruptions. Extremely hot and destructive.

Thin lava

Moves quickly to form a large, gentle shield volcanoes.

Thick lava

Slower, forms steep volcanic formations.