It occurs when hot materials such as lava, dust, rocks, and gas are thrown out. It can bring lava flows and ashfall, and also climate change and respiratory issues.

It is the state of burning that produces flames that send out heat, light, and smoke. It can permanently damage a person's or animal's respiratory system and cause death.

It is an overflow of water that submerges land that is usually dry. Its effects include loss of human life, damage to property, destruction of crops, and diseases.

It is the sliding down of a mass of earth or rock from a mountain or cliff.

It is a vertical funnel of rapidly spinning air. It can destroy large buildings, uproot trees and hurl vehicles hundreds of yards.

It is a period of time when an area or region experiences the lack of water in rivers, lakes, and groundwater. It can affect people and animals: economy, lack of water and food, and heat stroke.

It is a type of storm called a tropical cyclone, which forms over waters. Heavy rains from its clouds may cause floods.

It is the shaking of the surface of the Earth. It can make buildings fall down and set off landslides.

It is a series of fast-moving waves in the ocean usually caused by powerful earthquakes.