science volcano

• types of volcano according to activity shield volcano, cinder cone volcano, composite volcano,
• types of volcanoes according to appearance fissure volcano, lava dome
• volcanic features fissure vent, shield volcano, stratovolcano, lava dome
• composite volcano -is a majestic volcano
• shield volcano- is a mountain with broad, gently sloping sides and nearly circular base
• hotspots- usually hot regions in earths mantle due to high temperature mantle plumes that rise towards the surface
• fissure volcano- is a volcanic vent through which lava erupts without explosive activity
• magma- molten rock beneath earths surfaces
• sill- a flat piece of rock formed when magma hardens in a crack volcano
• parasitic cone- a small coneshaped volcano formed by an accumulation of volcanic debris
• flank- the side of a volcano
• conduit- an underground passage magma travels though
• crater- mouth of a volcano surrounds a volcanic vent
• lava- molten rock that errupt
• vent- an opening in earths surface through which volcanic materials escape
• ash cloud- a cloud of ash formed by volcanic explosions
• ash- fragments of lava or rock smaller than 2mm in size that are blasted into the air by volcanic explosions
• throat- entrance of a volcano
• summit- highest point
• weather- it is the condition of the atmosphere at a specific time
• factors affecting weather- temperature, wind, air pressure, humidity
• temperature- it is the degress of hotness and coldness of a place
• wind- it is the movement of air in the atmosphere
• air pressure- it is the force caused by the weight of air in the earth surface
• humidity- it is the amount of water vapour in the air
• climate- is the average of all weather condition of an area over a long period of time
• climate- is the average of all weather conditions of an area over a long period of time
• latitude- the georaphic coordinate that specifies the north south position of a point on the surface of the earth
• three general climate zones with respect to latitude- arctic, tropic climate, temperate
• two type of temperate climate- maritime, continental
• maritime- is strongly affected by the oceans and has fairly steady temperature across the seasons
• continental climate- increases in land characterized by warmer summers and colder winter
• vulcan- god of fire
• volcanic ashes- very fine grained fragment of pulverized rock, minerals and volcanic glass
• lapilli- volcanic fragment with a size ranging 2mm 64mm
• volcanic blocks- ejected from explosive sruptions
• lahar- sometimes called mudflow
• volcanic bombs- a mass of molten rock larger than 65 mm in diiameter
• types of volcano according to its activity- active, dormant
• lahar- they are flowing mixtures of volcanic debris and water