Ocean AdVENTure! - InterActivity #2: Vents Quiz

Ocean AdVENTure
InterActivities

Test your knowledge of vents using this self-administered quiz. Select the best answer for each question from the popup menu located below each question. You may check your work by clicking on the Score Test button at the bottom. Incorrect answers are shown in red.

1. Hydrothermal vents

a. Have been found in all the earth's oceans.
b. Are located primarily along areas of active seafloor spreading along the Mid-Oceanic Ridge.
c.Are at an average ocean depth of 2225 meters (7300 feet).
d. All of the above.
Your answer:

2. Hydrothermal vents

a. Spew hot water from holes in the ocean floor
b. Spew hot steam from holes in the ocean floor
c. Are never associated with volcanic activity.
d. Have been explored for over 100 years.
Your answer:

3. Which statement is NOT true about water from hydrothermal vents

a. It contains dissolved metals, hydrogen sulfide, and bacteria
b. It once seeped into cracks in the ocean floor and was heated by magma.
c. It is so hot that it is sterile and contains no life forms
d.It can reach 403°C (757°F).
Your answer:

4. Vents are important because they are thought to

a. Regulate the temperature and chemical balance of the oceans.
b.Hold clues about the origin of life on earth.
c.Contain organisms which may have significant medical and industrial applications.
d.All of the above.
Your answer:

5. Tools used in vent research include

a.Manned submersibles.
b.Remoted operated vehicles (ROV).
c.Transponders
d. All of the above.
Your answer:

6. Atmospheric pressure per square inch at sea level is 14.7 pounds per square inch. At 1000 meters below the surface of the ocean, the pressure is

a.10 atmospheres, or 147 pounds per square inch.
b.100 atmospheres, or 1470 pounds per square inch.
c.1000 atmospheres, or 14700 pounds per square inch.
d. None of the above.
Your answer:

7. The Mid-Ocean Ridge is

a.Only in the Mid-Atlantic and Mid-Pacific.
b.Circles the earth like the seam of a baseball.
c. Is a broken chain of mountain ranges about 60,000 km (37,000 mi.) long.
d.B and C.
Your answer:

8. Signs of hydrothermal vent activitiy include

a. Shimmering water.
b.Increased water temperature.
c.Bacteria mats.
d.All of the above.
Your answer:

9. The formula to convert Celsius (C) to Fahrenheit (F) is

a.F = C-32
b.F = C + 32
c. F = C x 9 divided by 5+32
d.None of the above.
Your answer:

10. An ecotone is

a. The sound of the transponder used to measure ocean depths.
b. A heat-stable enzyme from a vent creature.
c. A transition zone between two distinct environments.
d. None of the above.
Your answer:

11. The primary producer, or basis, of the food chain in a hydrothermal vent community are

a. Hydrogen sulfide-oxidizing bacteria.
b. Giant tube worms.
c. Eyeless shrimp.
d. Plants.
Your answer:

12. Giant tube worms of the Pacific vents

a. Are the fastest growing marine invertebrates known.
b. Move around from place to place in the vent to find the best food.
c. Have a symbiotic relation with bacteria.
d. A and C.
Your answer:

13. The most extreme "extremeophile" known among higher-order animals was discovered in a vent off Costa Rica. That creature is the

a. Arachaeon.
b. Pompeii worm.
c. Methanococcos jannaschii.
d. None of the above.
Your answer:

14. Words associated with the Theory of Plate Tectonics include

a. Gold, copper, sulfides, chimneys.
b. ROV, bathyscaphe, hydrophone, AUV.
c. Crystalluminescence, triboluminescence, sonoluminesence.
d. Subduction, magma, seafloor spreading, Mid-Ocean Ridge.
Your answer:

15. Vent chimneys

a. Occur at every vent.
b. Are formed when minerals dissolved in hot vent water precipitate out in the cold, surrounding sea water.
c. Can grow as high as a 16-story building.
d. B and C.
Your answer:

16. Hydrothermal circulation is thought to

a. Recycle all the water in the world's oceans every 6 - 8 million years.
b. Remove magnesium and sulfates from seawater and add certain gases such as hydrogen sulfide.
c. Play a significant role in regulating the oceans' temperature and chemical balance.
d. All of the above.
Your answer:

17. Some scientists believe the necessary elements of heat and water to support hydrothermal vents are, or were, present on

a. Earth.
b. Mars.
c. Jupiter's moon, Europa.
d. All of the above.
Your answer:

18. Researchers hope vents will provide new

a. Medicines.
b. Ways to remove industrial pollution.
c. Heat-stable enzymes for biochemical reactions.
d. All of the above.
Your answer:

19. Theories about vent colonization include

a. Ridge highways.
b. Whale carcasses.
c. Hydrogen-sulfide sensors in propagules.
d. All of the above.
Your answer:

20. Bacteria in hydrothermal vents manufacture food primarily by

a. Photosynthesis.
b. Chemosynthesis.

c. An unknown process.

d. None of the above.

Your answer:

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