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Science 2

AB
longitudethe earth rotates 360 degrees in 24 hours; it rotates 15 dgrees of longitude each hour
Travel eastwardtime increases 1 hour each 15 degrees
Travel westwardtime decreases 1 hour every 15 degrees
Standard time zonesestablish by law to avoid confusion; Bondaries pass through unpopulated areas
eastern75 degrees west
central90 degress west
montain105 degrees west
pacific120 degrees west
International dateline180 degrees middle of the pacific
pumicefloats
basahcommon lava rocks
obsidianvolcanic glass
scorialots of holes


jen

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