Separates England's southern coast from France's northern coast. Area of 29,000 square miles, smallest European continental shelf sea. Current name likely derived from Dutch sea atlases of late 16th century
Porosity measures void spaces in materials, ranging from 0 to 1. Void fraction in two-phase flow is gas phase volume divided by total channel volume. Porosity is used in multiple fields including engineering, materials science, and hydrology
The Missouri River is the nation's longest, flowing 2,341 miles to the Mississippi. It originates in the Centennial Mountains of southwestern Montana. The river drains over 500,000 square miles across ten states and two Canadian provinces. It forms the fourth-longest river system with the Mississippi
Earth's total water volume is 1.386 billion km³, with 97.5% being salt water. Freshwater accounts for nearly 1% of total water, with salinity below 0.35‰. Earth's oceans cover 70.8% of Earth's surface, making it appear blue from space
Lake Huron is one of five Great Lakes shared by Ontario and Michigan. Surface area is 23,007 square miles, making it third-largest freshwater lake. Contains 30,000 islands and is 577 feet above sea level. Maximum depth reaches 125 fathoms, average depth is 32 fathoms
The Mississippi River flows 2,340 miles from Lake Itasca to the Gulf of Mexico. It is the world's fourth-largest river by discharge flow. The river's watershed covers 1,151,000 square miles across 32 states