Dykes' are especially constructed in Norway. Dike, also called dyke are tabular or sheetlike igneous body that is often oriented vertically or steeply inclined to the bedding of preexisting intruded rocks; similar bodies oriented parallel to the bedding of the enclosing rocks are called sills.
What is the difference between a geyser and a hot spring?
Water is ejected explosively in a geyser. The big difference between a geyser and a hot spring is that a geyser has an obstruction in its hydrothermal plumbing near the surface. In hot springs, water is allowed to circulate to the surface and move freely, giving off steam and heat. In geysers, constrictions keep the boiling water underground.
The intensity of earthquakes is measured on Richter scale. The Richter scale was developed in the 1930s and is most effective for large-scale earthquakes that are of moderate intensity. The Richter scale measures the maximum amplitude of seismic waves as they reach seismographs.
The narrow strip of land joining two land masses is called as
The narrow strip of land joining two land masses is called as Isthmus. Isthmus is a narrow strip of land (with water on both sides) connecting two larger land areas. Isthmus of Panama connects South America and North America, while Isthmus of suez connects Asia and Africa.