1001 Space Earth Earth Rocks and Minerals Landscape Sea Weather and Climate Natural Disasters Resources Nature History Human World Science and Technology

Choose a Page:How long has there been life in th...How much of the Earth is covered b...Why does seawater taste salty?Is the ocean floor flat?What causes waves?What is an iceberg?*Are tidal waves caused by the tides?*What are ocean currents?How has the ocean bed been measured?How does the sea affect the climate?How do coral reefs form?Are there currents at great depths?Why does the tide come in and go out? Are tidal waves caused by the tides? No! tidal waves happen as a result of a great disturbance in the sea. Underwater volcanic eruptions, underwater earthquakes, or landslides into the sea can set up a devastating wave that can travel halfway round the world. Such waves are called 'tsunamis', but are also known as 'tidal waves'.   Previous: Back Book: 1001 Section: Earth Chapter: Sea