Radioactive decay, also known as nuclear decay or radioactivity, is the process by which a nucleus of an unstable atom loses energy by emitting radiation. A material that spontaneously emits such radiation â which includes alpha particles, beta particles, gamma rays and conversion electrons â is considered radioactive.
Best Answer: Four of the larger Australian deserts are the Great Victoria Desert, the Gibson Desert, the Tanami Desert and the Great Sandy Desert. That accounts for most of the west of the continent, nearly two-thirds. Name four states that would be included in at least one of the North American deserts.
The Simpson Desert is a large area of dry, red sandy plain and dunes in Northern Territory, South Australia and Queensland in central Australia. It is the fourth largest Australian desert, with an area of 176,500 km 2 (68,100 sq mi) and is the world's largest sand dune desert.he Simpson Desert is also a large part of the World Wildlife Fund ecoregion of the same name which consists of the Channel Country and the Simpson Strzelecki Dunefields bioregions of the Interim Biogeographic Regionalisation for Australia (IBRA).