ArcaMax

Knowledge

on Sep 7, 2025

West Virginia
Kentucky
Pennsylvania
Illinois

West Virginia. Bituminous coal is of higher quality than lignite coal, but poorer quality than anthracite coal.

Science Trivia / September 06, 2025

Drought. In the 1930's a drought in the U.S. lasted so long that tons of topsoil were blown away, causing the dust bowl.

Science Trivia / September 06, 2025

Neil Armstrong And Buzz Aldrin. Armstrong and Aldrin walked on the moon July 21, 1969.

Science Trivia / September 05, 2025

Filament. Most light bulb filaments are made of tungsten, because of its high melting point and durability.

Science Trivia / September 05, 2025

Limestone Areas. Limestone is a sedimentary rock composed largely of the minerals calcite and/or aragonite.

Science Trivia / September 04, 2025

A Space Shuttle. The Space Shuttle is part of NASA's Space Transportation System.

Science Trivia / September 04, 2025

Metaphase. During metaphase, chromosomes move about randomly, then align at right angles to the spindle poles.