What igneous rock can float on water?

What igneous rock can float on water?

Pumice is composed of highly microvesicular glass pyroclastic with very thin, translucent bubble walls of extrusive igneous rock.

Who led the first expedition around the world?

Ferdinand Magellan (1480-1521) was a Portuguese explorer who led the first expedition that sailed around the Earth (1519-1522).

When was Alaska purchased?

On March 30, 1867, the United States reached an agreement to purchase Alaska from Russia for a price of $7.2 million. The Treaty with Russia was negotiated and signed by Secretary of State William Seward and Russian Minister to the United States Edouard de Stoeckl.

How many episodes are there of The Price Is Right?

While retaining some elements of the original version of the show, the 1972 version added many new distinctive gameplay elements. Taped at CBS Television City in Los Angeles, The Price Is Right has aired over 7,500 episodes since its debut and began its 42nd season on September 23, 2013.

Which country gives the UK a Christmas tree every year?

The Trafalgar Square Christmas tree has been an annual gift to the people of Britain by the city of Oslo each year since 1947 as a token of gratitude for British support of Norway during the Second World War.

When did Puerto Rico become a commonwealth?

Puerto Rico has been a U.S. possession since 1898. It became a commonwealth in 1952. Puerto Rican citizens became U.S. citizens in 1917.

What did june carter play?

Valerie June Carter Cash (June 23, 1929 – May 15, 2003) was an American singer, dancer, songwriter, actress, comedian, and author who was a member of the Carter Family and the second wife of singer Johnny Cash. She played the guitar, banjo, harmonica, and autoharp, and acted in several films and television shows.

Why is the Python programming language called Python?

When he began implementing Python, Guido van Rossum was also reading the published scripts from “Monty Python’s Flying Circus”, a BBC comedy series from the 1970s. Van Rossum thought he needed a name that was short, unique, and slightly mysterious, so he decided to call the language Python.