Intermediate

A highly reactive substance that forms and then reacts further during the conversion of reactants to products in a chemical reaction. Intermediates never appear as products in ...

Mount Etna

Natural environment; Volcano

Mount Enta is an active stratovolcano on the east coast of Sicily, Italy. It is the tallest active volcano in Europe and one of the most active volcanoes in the world with an ...

Stromboli

Natural environment; Volcano

Stromboli is a small island off the north coast of Sicily containing one of the three active volcanoes in Italy. The volcano has been in almost on continuous eruption for the past ...

Mount Tambora

Natural environment; Volcano

Mount Tambora is an active stratovolcano on the island of Sumbawa, Indonesia. It erupted in 1815 and was the largest volcanic eruption in history. Prior to the eruption, Mount ...

Eyjafjallajökull

Natural environment; Volcano

Eyjafjallajökull is one of the smaller ice caps of Iceland, which lies on top of a caldera of a volcano at a summit of 1,666m (5,466ft). The volcano is well known for its 2010 ...

Mount St. Helens

Natural environment; Volcano

Mount St. Helens is an active stratovolcano in Washington, United States. The volcano suffered a catastrophic eruption in May 1980, which killed 57 people and destroyed homes, ...

Masaya Volcano

Natural environment; Volcano

Masaya is a volcano in Managua, Nicaragua. The volcano has had lava flows in 1670 and 1772. More recently in 2001, an explosion sent rocks flying 500 metres away from the crater, ...