EARTH SCIENCE one pages 637-704 in your textbook. Student Number Sadent Name Cit
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EARTH SCIENCE one pages 637-704 in your textbook. Student Number Sadent Name City State Code of the following, write on the blank line the letter of the word or phrase that best complees the statement or answers the question. The study of oceanography does not involve the field of (A) physics. (B) geology (C) anthropology. (D) biology 2. Nodules are lumps of minerals found on the ocean floor that can be oxides of (A) silicon. (B) iron. (C) aluminum. The most valuable resource of the ocean is (A) trace minerals. (B) nodules of minerals. (C) petroleum. 4,--Earth can be called the "water planet" because water covers about (A) 97% of the surface. (B) 70% of the surface. (C) 50% of the surface. (D) 30% of the surface. Calcium carbonate on the ocean floor comes mostly from (A) diatoms. (B) radiolarians. (C) foraminifera. 6The two main gases dissolved in ocean water are (A) carbon dioxide and ox (B) helium and nitrogen. (C) oxygen and argon. (D) nitrogen and carbon dioxide. (E) nitrogen and oxygen. 7. The six most abundant elements dissolved in ocean water are chlorine, sodium, magnesium, sulfur, calcium, and (A) phosphorus. (B) iron. (C) zinc. (D) potassiunm Most benthic organisms live in the (A) sublitoral zone. (B) bathyal zone. (C) abyssal zone. (D) hadal zone. Desalination separates the salt from the water in ocean water thus producing fresh water. Which of the following is not a method of desalination? (A) freezing (B) reverse osmosis (C) distillation (D) salt extraction 10. Core samples (A) are cylinders of ocean floor sediment. (B) show that little of the sediment in deep-ocean basins settles from the ocean water above. (C) are obtained by dredging the ocean floor.Explanation / Answer
(C ) . anthropology. (B). Iron (B). nodules of minerals (B). 70% of the surface (A ). Diatoms (C ). Nitrogen and oxygen (D) potassium (C ). Abyssal zone (A). freezing (A) cylinders of ocean floor sediment.
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