A(n) ________ is a silicate structure where no silica tetrahedra share any oxygen ions
A) single chain
B) double chain
C) framework
D) independent
Answer: D
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Which model of the internal social structure of the city explains that a city grows outward from a central area in a series of five rings, like the growth rings of a tree?
A) The concentric model B) The sector model C) The multiple nuclei model D) The adaptive concentric model E) The successive hierarchy model
Oxygen enters seawater ____
A) through the respiration of animals B) as a byproduct of photosynthesis and diffusion from the atmosphere C) as a result of decomposition of plant and animal remains D) through the oxidation of metal ions in seawater
Which type of damage does NOT typically accompany a hurricane’s storm surge?
a. ?Buildings, bridges, and piers are washed away. b. ?Dunes are washed away. c. ?Houses not on high posts are floated and carried farther onshore. d. ?Heavy sand is deposited on beaches, partly burying some homes. e. ?Saltwater invades and contaminates groundwater.
How can a hydrogen atom, which has only one electron, have so many spectral lines?
A. The protons in the nucleus are also giving off various light frequencies. B. One electron can be boosted to many different energy levels. C. The electron is able to move at various speeds. D. The atomic radius of the hydrogen atom is relatively large.