Earth Science Chapter 16 Section 1 Review

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1 Name: Class: Date: Earth Science Chapter 16 Section 1 Review Multiple Choice Identify the choice that best completes the statement or answers the question. 1. The energy that drives surface ocean currents comes from. a. salinity variations c. temperature differences b. wind d. wave action. Because of the Coriolis effect, ocean currents in the Northern Hemisphere are deflected to the. a. right c. north b. left d. south 3. Which force is involved in the development of surface currents? a. gravity c. friction b. inertia d. none of the above 4. Ocean currents that move toward the poles are. a. warm b. cold c. warm in the Northern Hemisphere and cold in the Southern Hemisphere d. cold in the Northern Hemisphere and warm in the Southern Hemisphere 5. What is true about an ocean current that is moving toward the equator? a. It is warm. c. It is cold. b. It is fast. d. It is slow. 6. The Gulf Stream affects the climate of. a. California c. Alaska b. Great Britain d. Africa 7. The influence of cold currents is mostly felt in the. a. middle latitudes during winter c. higher latitudes during winter b. higher latitudes during spring d. tropics 8. What causes surface ocean currents to be deflected? a. deep currents c. Earth s revolution b. the Coriolis effect d. global winds 9. The rising of cold water from deeper layers to replace warmer surface water is called. a. the Coriolis effect c. upwelling b. a surface current d. reflection 10. Which of the following is NOT associated with upwelling? a. increased nutrients at the ocean surface b. increased plankton population c. vertical water movements d. horizontal water movements

2 Name: 11. Which process does NOT decrease the salinity of water? a. runoff from land c. precipitation b. formation of sea ice d. melting of sea ice 1. Density currents move. a. horizontally c. from north to south b. vertically d. from south to north 13. Which of the following can cause an increase in the density of ocean water? a. a decrease in temperature c. a decrease in ocean circulation b. an increase in salinity d. both a and b 14. According to the conveyor belt model of ocean circulation, what happens when water reaches the poles? a. The salinity of the water increases. b. The salinity of the water decreases. c. The density of the water decreases. d. The temperature of the water increases. Completion Complete each statement. 15. Surface currents develop from between the ocean and the wind that blows across its surface. 16. The Benguela Current, the Peru Current, and the California Current are all currents that originate in high-latitude regions. 17. brings greater concentrations of dissolved nutrients to the ocean surface. 18. Processes that increase the density of seawater include and. Short Answer: Complete TWO questions for FIVE points each. Each additional correct answer is worth one point extra credit. 19. What are gyres? 0. What effect do ocean currents have on the climate of Great Britain? 1. What is upwelling?

3 Name:. What causes a density current? Essay: Complete ONE question for FIVE point. Each additional correct answer is worth one point extra credit. 3. How does upwelling impact fish populations? 3

4 Earth Science Chapter 16 Section 1 Review Answer Section MULTIPLE CHOICE 1. ANS: B PTS: 1 DIF: L1 OBJ: ANS: A PTS: 1 DIF: L1 OBJ: ANS: C PTS: 1 DIF: L1 OBJ: ANS: A PTS: 1 DIF: L1 OBJ: ANS: C PTS: 1 DIF: L1 OBJ: ANS: B PTS: 1 DIF: L OBJ: ANS: D PTS: 1 DIF: L OBJ: ANS: B PTS: 1 DIF: L1 OBJ: ANS: C PTS: 1 DIF: L1 OBJ: ANS: D PTS: 1 DIF: L OBJ: ANS: B PTS: 1 DIF: L1 OBJ: ANS: B PTS: 1 DIF: L OBJ: ANS: D PTS: 1 DIF: L OBJ: ANS: A PTS: 1 DIF: L OBJ: 16.4 COMPLETION 15. ANS: friction PTS: 1 DIF: L1 OBJ: ANS: cold PTS: 1 DIF: L1 OBJ: ANS: Upwelling PTS: 1 DIF: L1 OBJ: ANS: evaporation, formation of sea ice PTS: 1 DIF: L OBJ: 16.4 SHORT ANSWER 19. ANS: large whirls of water within an ocean basin PTS: 1 DIF: L1 OBJ: ANS: Ocean currents cause the climate of Great Britain to be warmer during the winter than other places of similar latitude. PTS: 1 DIF: L OBJ: 16. 1

5 1. ANS: the rising of cold water from deeper layers to replace warmer surface water PTS: 1 DIF: L1 OBJ: ANS: density differences among water masses PTS: 1 DIF: L OBJ: 16.4 ESSAY 3. ANS: Upwelling brings greater concentrations of dissolved nutrients to the ocean surface. These nutrient-enriched waters promote the growth of microscopic plankton. The plankton, in turn, support extensive populations of fish and other marine organisms. PTS: 1 DIF: L OBJ: 16.3

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