Hawaiian types of volcanic eruptions is not usually explosive. Hawaiian eruptions are the calmest of the eruption types. They are characterized by the effusive emission of highly fluid basalt lavas with low gas contents. The relative volume of ejected pyroclastic material is less than that of all other eruption types.
________ are defined as the mass movement of rock, debris or Earth down a slope.
A landslide is defined as the movement of a mass of rock, debris, or earth down a slope. A landslide is a sudden movement of rocks, debris or Earth (mud) down a slope due to undercutting of rocks. The main erosional agents are air, water and ice.
Exposure of rock to the changes of temperature is the cause of ________
Exposure of rock to the changes of temperature is the cause of Mechanical weathering. Temperature changes can also contribute to mechanical weathering in a process called thermal stress. Changes in temperature cause rock to expand (with heat) and contract (with cold). As this happens over and over again, the structure of the rock weakens.
Out of the following geomorphic processes which one is associated with the work of glaciers?
Plucking processes is associated with the work of glaciers. Plucking happens when rocks and stones around the glacier become frozen to the base or sides of the ice. They are then attached to the ground (that doesnt move) and the glacier (which is moving). One of two things will happen; either the rock is so strongly attached to the ground that the ice breaks off it as the glacier moves, or the ice pulls or plucks the rock out of the ground. When the ice wins, plucking has occurred.
Breaking down of rock in situ is known as ________
Weathering is the breakdown of rocks in situ (in the place where they are). Rocks are susceptible to weathering. The type of weathering that is most effective is determined by the composition of the rock and the climate. There are three main types of weathering. These are mechanical, chemical and biological weathering.
Volcanic activities mainly takes place in the basin of Pacific Ocean known as 'Pacific Ring of Fire' Maona Loa in Hawaii is particularly famous for volcanic activities. The local tectonic plate (in the case of the Hawaii hotspot, the Pacific Plate) slowly slides over the hotspot, carrying its volcanoes with it without affecting the plume. Over hundreds of thousands of years, the magma supply for the volcano is slowly cut off, eventually going extinct.
Which of the following city is the capital of desert country Mali?
Bamako the largest city of Mali and is also the capital of Mali. It is the fastest growing city in Africa. The national capital, Bamako, is located on the Niger River and is a rapidly growing city because of increased migration from the depressed rural areas.
The Coral reefs are a specimen of Tropical Rain Forest. Coral reefs are very much the rainforests of the oceans. Not only are they diverse communities, but the coral skeletons - like trees - contain potentially long term records of climate.
Formation of magma along the bedding plane results in ________
Formation of magma along the bedding plane results in Sill. Sills result when an intrusion of magma is made horizontally along the bedding planes of sedimentary while dyke is formed through vertical intrusion of magma.
Dhaulagiri peak in the Himalayan Range is located in
Dhaulagiri is the high point of the Dhaulagiri Himal or massif in Nepal, a sub-range of the Himalaya that rises between the Bheri River on the west and the Kali Gandaki River on the east. Dhaulagiri is the highest mountain located completely within Nepal; all others lie along the Tibet/China border to the north.