The Phanerozoic Eon consists of the following three eras:
a. Hadean, Archean, Proterozoic
b. Paleozoic, Mesozoic, Cenozoic
c. Cambrian, Ordovician, Silurian
d. Paleogene, Tertiary, Quaternary
Answer: b. Paleozoic, Mesozoic, Cenozoic
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How might you tell whether or not your toothpaste contained either calcium carbonate, CaCO3, or baking soda, NaHCO3, without looking at the ingredients label?
A. The toothpaste produces a salt (NaCl) when added to HCl. B. The toothpaste bubbles when added to ammonia, such as window cleaner. C. The toothpaste bubbles when heated. D. The toothpaste bubbles when added to vinegar.
How have parts of Florida's coast been extended?
a. Fringing reefs b. Mangroves c. Barrier reefs d. Atolls
At a linear volcanic chain, such as the Hawaiian Islands, the rocks are oldest over the hot spot and
become progressively younger away from the hot spot. Indicate whether the statement is true or false.
Coral polyps secrete solid masses of rocklike material. The primary chemical composition of this material is
A. calcium fluorite. B. calcium silicate. C. calcium carbonate. D. carbon dioxide. E. quartzite.