The Summative Assessments are aligned with the Common Core State Standards (CCSS) for English language arts/literacy (ELA) and mathematics. The tests capitalize on the strengths of computer adaptive testingâefficient and precise measurement across the full range of achievement and timely turnaround of results.
Kola wellâs derrick in 1980: still the worldâs deepest hole (Credit: Wikipedia) Decades ago, the Russians drilled deeper than anyone has ever gone. Their Kola Superdeep Borehole was started in 1970 and still holds the world record for the deepest hole in the ground. But they didnât reach the mantle.
5 of the World's Largest and Deepest Sinkholes. If nothing else, sinkholes are mysterious as they are devastating. Technically speaking, a sinkhole, also known as a sink, snake hole is a natural depression or hole in the Earth's surface caused by the chemical dissolution of carbonate rocks.. Continue reading to see five of the world's deepest sinkholes - bonus videos included. The Devil's Sinkhole is a vertical natural bat habitat The 40x60 feet opening drops down to reveal a cavern some 400 feet below. The cavern was first discovered by local residents in 1876.