Volcanoes are an active expression of plate tectonic phenomena. They are prevalent near plate borders, both divergent and convergent. Beyond plate borders, volcanoes can also be located inside lithospheric plates. In simpler terms, volcanoes are formed when molten material and gaseous element enter the...
They are the world's most common volcanic landform. As the name "cinder cone" suggests, they are cone-shaped hills made up of ejected igneous rocks known as "cinders". These small volcanoes usually have a circular footprint, and their flanks usually slope at an angle of about 30 to 40 ...
READ:What is a Volcano and How are Volcanoes Formed? 3. Polar Easterlies The polar easterlies are also referred to as polar Hadley cells. They are the prevailing cold and dry winds that propel from the high-temperature regions of the polar heights at the south and north poles moving toward...
Hawaiian eruptions are so named because they are common to Hawaii's volcanoes. Strombolian Eruptions: These eruptions are fairly impressive but not particularly dangerous. They thrust small amounts of lava 50 to a few hundred feet (15 to 90 meters) in the air, in very short bursts. The ...
Dinosaurs don't seem to have structures called respiratory turbinates, which are common in endothermic mammals. Since no one can study dinosaurs in the wild, it's unlikely that scientists will find conclusive proof supporting either argument any time soon. T. Rex: Scavenger or Pr...
They were formed during the Pleistocene when ascending basaltic magma encountered frozen permafrost. It is believed that a slow but sustained supply of water from the permafrost contributed to the enormous size of these maars. [2]ADVERTISEMENT How Common are Maars? Maars are more numerous than ...
If you'd like to see these strange fossil-esque formations in person, they are typically found along the slopes of basaltic shield volcanoes that are prone to liquid lava flows. There's a state park you can visit to witness some truly spectacular examples: Lava Trees State Monument. ...
There are several common ways volcanoes form. Many are caused by oceanic plates diving under (subducting) a continental plate. The friction between the two plates melts crustal rock into magma, which forces its way to the surface and erupts as a volcano. The Pacific "Ring of Fire" refers to...
Oceanic islands (4), also known as volcanic islands, areformed by eruptions of volcanoes on the ocean floor. No matter what their height, oceanic islands are also known as “high islands.” Continental and coral islands, which may be hundreds of meters taller than high islands, are called ...
How are lakes formed by wind erosion? What is the primary cause of soil erosion? What causes stream bank erosion? What is the fluvial cycle of erosion? How does groundwater erode rock material? What is the difference between weathering and erosion?