A sea cave, also called a littoral cave, begins as a small crack or weak spot in a cliff beside the sea. Ocean waves – salty water full of gravel and sand pound against this spot for centuries, slowly enlarging it and hollowing out a cave in the side of the cliff.Know More
Aside from water, rough forces such as wind and cold temperature also help form sea caves and hollow out delicate details like grand arches and networks of small caves that fit together like a honeycomb. Wind has a strong corrosive power over time, just like water, and it rushes through the caves, especially at low tide. Cold temperature freezes water that creeps into cracks along the surface of the rocks. When it freezes, it expands, hence enlarging those cracks.
Sea cliffs made of soft rock, such as sandstone, present the best conditions for the formation of sea caves. Still, the wind and the waves with their repetitive motion and abrasive content, can form caves even out of hard rock.
Most littoral caves span less than 300 meters from the entrance to the end. The longest sea cave in the world, the Matainaka Cave in New Zealand, is 1,540 meters long. The Sea Lion Caves in Oregon have the largest volume of all the sea caves in the world. They are also the longest caves in the United States.Learn more about Earth Science
The Hubbard Glacier is the largest tidewater glacier in North America. A tidewater glacier is one that flows into the ocean. The glacier is approximately 7 miles wide at its foot and 76 miles long. These measurements are constantly changing as the Hubbard Glacier continues to grow and move forward.Full Answer >
Wetlands serve as some of the most complex and important ecosystems on Earth, providing habitat for many plants and animals, collecting and filtering water, and reducing the amount of damage from floods and heavy rainfall. Wetlands go by many alternative names, including swamps, marshes and bogs. They vary slightly in physical composition; some wetlands contain primarily trees, while others contain brush and shrubs, but all perform equally important ecological roles.Full Answer >
One interesting fact about Earth is its status as the fifth planet in terms of size but the densest of all. It also ranks as the largest of the terrestrial planets in the solar system and the only one on which water exists in liquid form on its surface.Full Answer >
Fire is created through quantum reactions with the air. The air excites the molecules and they emit photons, which are what we see when we look at flames.Full Answer >