Eolian transport can move sediment in suspension
a. True
b. False
Indicate whether the statement is true or false
True
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What is a molecule?
A. a pair of shared valence electrons B. a pair of atoms sharing a set of valence electrons C. a group of covalent compounds held together by ionic bonds D. a group of atoms that are held together by ionic bonds E. a group of atoms that are held together by covalent bonds
What explains the uneven distribution of the world's people?
A) physical environment B) historical circumstances C) technological developments D) all of the above E) physical environment and historical circumstances only
The ________ emits mainly ________ which is also called ________
A) Sun—shortwave radiation—radio waves B) Sun—longwave radiation—infrared C) Earth—shortwave radiation—infrared D) Earth—longwave radiation—thermal infrared E) Earth—longwave radiation—ultraviolet
Volcano A erupts rocks with SiO2 content ranging from 49% to 52% whereas volcano B, 100km away, erupts materials with SiO2 content of 62-68%. Which statement best characterizes these two volcanos?
A) Volcano A is probably a shield volcano with typically quiescent eruptions, whereas Volcano B is likely a stratovolcano characterized by violent, explosive eruptions. B) Both volcanos are violent, explosive volcanos that spread ash continent wide. C) Volcano A is likely to be a supervolcano with violent eruptions, whereas volcano B is probably a shield volcano with quiescent eruptions. D) Both volcanos are shield type volcanos that are characterized by quiescent eruptions.