Energy In The Ocean
Storms in the Water
What can waves do?
How are waves caused?
What are swells?
Swells are a type of wave that travels a very long distance across the ocean. They aren't developed by common winds, they're made by storms in the distance. Most of the time, swells are smooth but they can sometimes be choppier. Like regular waves, they're measured from their crest to their trough.
Rogue waves are surface waves that are very large and unpredictable. They occur in open water and can be extremely dangerous to ships, including large ones such as ocean liners. They're quite rare and come without warning suddenly, which makes them even more dangerous. They're often defined as being twice as big or more than a normal wave. Rogue waves are surely not the largest waves found in the ocean, but they are still unusually big. Waves are considered rogue waves depending on the ocean.
- In Lituya Bay, Alaska the tallest wave ever was recorded and reached 1,719 feet.
- Surface currents are an important part of traveling at sea because they can either make it very difficult or very easy.
- Some types of marine animals use currents to migrate to breeding grounds thousands of miles away.
- Waters in the Northern Hemisphere are moved in a clockwise direction by the wind and they're moved counter-clockwise in the Southern Hemisphere.
- Waves sometimes move in opposite directions during storms.