If the intensity of radiation 1.0 m from a source is 300. mCi, what is the intensity 3.0 m from the source?
A) 100. mCi
B) 33 mCi
C) 9.0 x 10^2 mCi
D) 2.7 Ci
B
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Rocks moving from a source area become:
a) smaller and rounder as they are transported b) bigger and rounder as they are transported c) depends d) smaller and more angular e) change their mineralogy
The Great Pacific Garbage Patch (or Eastern Garbage Patch) is a region of the Pacific Ocean northeast of Hawaii where high concentrations of marine debris can be found
This debris includes easily visible large pieces of floating litter such as plastic bottles, along with vast quantities of easily-overlooked confetti-sized plastic particles suspended in the surface waters. The patch is estimated to be at least the size of Texas, with some estimates as great as the size of the continental United States. Several such patches exist in the various oceans across the globe. What is the most logical explanation for the existence of these patches? A) The rotation of the planet causes marine debris to be pulled toward the Equator, where most of these patches are found. B) There are several locations in the middle of the oceans where it is legal to dump wastes. C) The patches are found along shipping lanes where cruise ships illegally dispose of their garbage by throwing it overboard. D) Currents circulate plastics and other debris until they accumulate in areas where currents are more sluggish.
The organisms that replaced Paleozoic corals as the major reef builder in the Mesozoic were
a. scleractinians. d. cephalopods. b. rudist bivalves. e. gastropods. c. oysters
How did the Earth form? How did the ocean form? Include relevant terminology, dates, and processes. What will be an ideal response?