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Stop Disasters

Stop Disasters

Moral Machine What Is a Tsunami? | Wonderopolis If you've ever taken a bath or swum in a lake or pool, you've probably enjoyed creating your own waves. Unlike solid objects, water is fluid and easy to move around. The harder you push with your hands, the bigger the waves will be. Now imagine what happens in the ocean when an earthquake occurs underground. When an earthquake occurs under the ocean floor, the earthquake's massive energy is transferred to the water above it, creating a series of water waves called a tsunami. In addition to earthquakes, tsunamis can be caused by other events that generate enough energy to displace a large volume of water, such as volcanic eruptions, landslides, meteors, and even underwater tests of nuclear devices. Tragically, because of the huge amounts of water and energy involved, tsunamis can cause tremendous damage to coastal areas. You may recall the earthquake and tsunami that occurred in Japan on March 11, 2011. As a tsunami approaches a coastline, though, things begin to change dramatically.

What is a flood? Introduction to Flooding Many of us have this idea that floods (or flooding) is simply, too much water around your house. People think that can be fun. Wrong. Flooding is a lot more than that. Flooding is extremely dangerous and has the potential to wipe away an entire city, coastline or area, and cause extensive damage to life and property. What is a flood? It is a natural event or occurrence where a piece of land (or area) that is usually dry land, suddenly gets submerged under water. When floods happen in an area that people live, the water carries along objects like houses, bridges, cars, furniture and even people. Floods occur at irregular intervals and vary in size, duration and the affected area. It is important to note that water naturally flows from high areas to low lying areas. In this lesson, we shall see more about what causes flooding, the types of flooding, some effects of floods and what we can do before, during and after floods occur.

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