When did the Laki eruption end? 7 February 1784 Is Laki volcano active? The eruption began on June 8, 1783. Until July 29 activity was confined to the fissure southwest of Mount Laki. On July 29 the fissure northeast of the mountain became active, and from that time almost all activity was confined to that […]

What is geologic time scale? The geologic time scale (GTS) is a system of chronological dating that classifies geological strata (stratigraphy) in time. It is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events in geologic history. What determines the length of a geological time period? Geologists have […]

Is distance between Sun and Earth decreasing? There is an effect which is making us move very slowly away from the Sun. That is the tidal interaction between the Sun and the Earth. This slows down the rotation of the Sun, and pushes the Earth farther away from the Sun. Is the sun pulling Earth […]

What is the approximate height of the atmosphere? It extends from Earth’s surface to an average height of about 12 km (7.5 mi; 39,000 ft), although this altitude varies from about 9 km (5.6 mi; 30,000 ft) at the geographic poles to 17 km (11 mi; 56,000 ft) at the Equator, with some variation due […]

Can chemical energy converted into potential energy? The potential energy stored in molecules can be converted to chemical energy, which can ultimately be converted to kinetic energy, enabling an organism to move. What converts chemical potential energy to other forms of energy? Chemical batteries: Store chemical energy to be changed into electricity. Biomass: Combustion reaction […]

Who identified continents? German meteorologist Alfred Wegener first presented the concept of Pangea (meaning “all lands”) along with the first comprehensive theory of continental drift, the idea that Earth’s continents slowly move relative to one another, at a conference in 1912 and later in his book The Origin of Continents and Oceans (1915). How was […]

Are nightingales in America? Nightingales are not naturally found in North America. In fact, it was long thought that Nightingales were a member of the thrush family, but in recent times they have been considered to be closer to the Old World Flycatchers. Are there nightingales in Australia? Here in Australia, we have our own […]

Where are the 7 continents located? Generally identified by convention rather than any strict criteria, up to seven regions are commonly regarded as continents. Ordered from largest in area to smallest, these seven regions are: Asia, Africa, North America, South America, Antarctica, Europe, and Australia. Where are the 7 continents and 5 oceans? The 7 […]

What are the essential parts of a Shaduf? Typically it consists of a long, tapering, nearly horizontal pole mounted like a seesaw. A skin or bucket is hung on a rope from the long end, and a counterweight is hung on the short end. The operator pulls down on a rope attached to the long […]