describe the principal styles of eruptions and the deposits and landforms that each style produces?

Answer 1

Since learning the material, from whatever source, is the point of doing homework, I can't see how people here giving you accurate answers is harmful.

"Though the common perception of a volcano as a mountain spewing lava and poisonous gases from a crater in its top is not wrong per se, the features of volcanoes are much more complicated and vary from volcano to volcano depending on a number of factors. Some volcanoes even have rugged peaks formed by lava domes rather than a summit crater, whereas yet others present landscape features such as massive plateaus. Vents that issue volcanic material (lava, which is what magma is called once it has broken the surface, and ash) and gases (mainly steam and magmatic gases) can be located anywhere on the landform. Many of these vents give rise to smaller cones such as Pu'u 'Ō'ō on a flank of Hawai'i's Kīlauea." (1)

"Eruptions can be classified by the opening through which volcanic material flows or is ejected. Lava or pyroclastic material can be erupted from a fissure or a central vent. A fissure is a "surface of fracture or a crack in rock along which there is distinct separation" (Bates and Jackson, 1980, p. 232). A fissure eruption is an "eruption that takes place from an elongate fissure" (Bates and Jackson, 1980, p. 232). Fissure eruptions are common along mid-ocean ridges and produce pillow basalts. Fissure eruptions are also common in Hawaii and often produce curtains of fire as lava fountains along a fissure." (2)

"In contrast, a central vent is the "opening at the Earth's surface of a volcanic conduit of cylindrical or pipelike form" (Bates and Jackson, 1980, p. 102). A central eruption is the 'ejection of debris and lava flows from a central point, forming a more or less symmetrical volcano' " (3)

"Few submarine eruptions have been documented because of the difficulty in monitoring submarine volcanoes. Several lines of evidence indicate that submarine eruptions occur. " (4)

"Shallow water eruptions are characterized by steam explosions that produce islands made of tephra. In most cases, the islands are eroded by ocean waves. In some cases lava is erupted subaerially and forms a protective cap on the island. " (5)

That ought to be enough to get you started. Do remember, though, that you must think at least enough to rewrite these in your own words. (And cite the sources!) Your teacher is smart enough to know plagiarism when he or she sees it. And your writing style is already known to hir.

Answer 2

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Answer 3

Sounds like you are wanting someone to do your homework for you! Have you read the book?

Answer 4

Do your own homework!

...or how do you expect to succeed at life?