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.
Which of the following is meant by an archipelago?
Granite is an example of Abyssal Igneous Rock. An igneous rock that crystallized at considerable depth in the crust; plutonic rock. Igneous rocks forming below the Earth's surface at some depth due to cooling of magma are abyssal igneous rocks e.g Granite.
The material that comes out of a volcano at the time of eruption is ________
The material that comes out of a volcano at the time of eruption is Solid, liquid, gaseous. Volcanic eruptions are caused by magma (a mixture of liquid rock, crystals, and dissolved gas) expelled onto the Earth's surface.
Which of the following is/are the correct characteristic(s) of primary seismic wave?
The characteristic(s) of primary seismic wave are that it is a longitudinal and compressional wave, it is analogous to sound waves and it travels with faster speed through solids but slowly through liquids. Primary waves (P- waves) are compressional waves that are longitudinal in nature.
The transverse, longitudinal and surface waves in an earthquake originate from ________
The transverse, longitudinal and surface waves in an earthquake originate from the focus within the body of the earth.The epicenter of an earthquake sends out waves which are like an object dropped on to a still body of water that sends out ripples. After the stone hits the water ripples move outwards from the centre in every direction. An earthquake releases energy as shock waves, the so-called seismic waves, which ripple across the earth's surface.