Q: The place where a river meets the sea is called a(n) __________. A. estuary B. isthmus C. escarpment D. peninsula. A: Place where river meets sea is estuary. Log in to see link for more information.
Although The Guinness Book of Records recorded the XF-84H as the fastest propeller-driven aircraft ever built, with a design top speed of 670 mph (1,080 km/h) (Mach 0.9) and 623 mph (1,003 km/h) (Mach 0.83) during tests, this claim has been disputed.
Fastest plane in the world. NASA's X-43 is the fastest aircraft in the world. On 16 November 2004, the X-43 reached Mach 9.6 (7,000 mph or 11,265 km/h) according to NASA. The X-43 is an unmanned aircraft, which launches not from the ground but from a B-52 at about 40,000 feet (12.2 kilometers) in the air.