What is the largest biogeochemical cycle?
a. Global Carbon cycle
b. Global Nitrogen cycle
c. Global Phosphorus cycle
d. Global Silicon cycle
ANS: A
Carbon is the largest biogeochemical cycle. Carbon is considered the building block of life because it
can create many bonds. Information can be found in the section Elements Cycle between Living
Organisms and Their Surroundings
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Which of the following might best explain the reason why electrons are restricted to certain energy levels in an atom?
A. They are travelling at very high speeds. B. They behave like restricted waves and are self-reinforcing. C. They are interacting with the light around the atom. D. They are out of phase and self-destruct when outside of distinct energy regions. E. They behave like chaotic waves of alternating frequency.
Study Figure 7.18 in the text. How must conditions change for a rock to go from an amphibolite to an
eclogite facies? What happens if pressure is at 4 kbar but temperature decreases from 600 degrees C to 400 degrees C? What will be an ideal response?
Which of the following is the characteristic feature of all alkenes?
A) the presence of one or more carbon-carbon double bonds B) the presence of one or more carbon-carbon triple bonds C) the presence of at least one carbon-carbon double bond, and at least one carbon-carbon triple bond D) the presence of a ring system
Which piece of glassware do we use to deliver a variable but precisely known volume of solution during a titration?
A) a buret B) an Erlenmeyer flask C) a graduated cylinder D) a volumetric pipet