US_Canada_lab_1

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Shippensburg University of Pennsylvania *

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103

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Electrical Engineering

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Jan 9, 2024

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Lab 1 Name______________________________ I. The Earth’s geographic grid system 1. Match the following parallels with the letter (A, B, C) on the globe 66.5 o N _______ 0 o _______ 90 o N ________ 2. Match the following meridians with the letter (X, Y, Z) on the globe 50 o E _____ 40 o W _____ 90 o W _____ 3. In which direction do meridians run? 4. In what direction do parallels run? 5. All meridians intersect at what two points on Earth? -------------------------------------------------------------------------------------------------------------------------------------------------- The following questions will help us understand how the Plate Tectonic theory can explain the global pattern of volcanoes. Volcanoes are produced by molten rock (magma) rising from the mantle through the Earth’s crust, flowing or exploding from vents in the crust and solidifying. I. Global distribution of volcanoes Use the names of continents, oceans, or countries, and modifiers such as “eastern coast of…”, or northern boundary of…”, etc. to list three general regions of volcanoes (for example, ‘eastern coast of South America”; obviously this is an example and not correct). 1. 2. 3.

II. Analysis of lithospheric plate boundaries. The purpose of this section is to look closely at four lithospheric plate boundaries and determine the relationship of them to volcanoes. Refer to the maps at the end of the lab. A. ANDES MOUNTAINS 1. List the lithospheric plates involved in the formation of the Andes and indicate the direction of movement of each. Western plate and direction _______________ Eastern plate and direction _______________ 2. Of the three major types of plate boundaries (divergent, convergent, transform), which is represented here? ____________ 3. Name the type of crust (continental or oceanic) comprising the leading edge of each lithospheric plate that you answered in question A1. Western plate leading edge crust___________ Eastern plate leading edge crust ____________ B. ISLANDS OF INDONESIA 1. List the two lithospheric plates involved in the formation of the Indonesian Islands and indicate the direction of each. Southern plate and direction ______________ Northern plate and direction ______________ 2. Of the three major types of plate boundaries, which is represented here? _________ 3. Name the type of crust (continental or oceanic) comprising the leading edge of each lithospheric plate that you answered in question B1 Southern plate leading edge crust____________ Northern plate leading edge crust ___________

C. HIMALAYA MOUNTAINS 1. List the two lithospheric plates involved in the formation of the Himalayan mountains and indicate a direction for each Southern plate and direction _____________ Northern plate and direction _____________ 2. List the type of crust (continental or oceanic) comprising the leading edges of the two lithospheric plates involved in the formation of the Himalayan mountains. Southern plate leading edge crust _________________________________ Northern plate leading edge crust _________________________________ D. MID-ATLANTIC RIDGE 1. List the four lithospheric plates along the Mid-Atlantic Ridge, and the direction of movement of each Northwest plate and direction _____________ Northeast plate and direction ______________ Southwest plate and direction ______________ Southeast plate and direction ______________ 2. Of the three major plate boundaries, which type is represented here? _____________________ 3. List the type of crust (continental or oceanic) comprising the trailing edges of each plate from question D1. Northwest plate trailing edge crust _______________ Northeast plate trailing edge crust _______________ Southwest plate trailing edge crust _______________ Southeast plate trailing edge crust ________________ III. CONCLUSIONS 1. Are volcanoes distributed near the center or edges of lithospheric plates? 2. If volcanoes are distributed near the edges of plates, are volcanic areas along the leading edges, trailing edges, or both?

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