1. Salinity refers to the total amount of
(a) sediments in the water.
(b) impurities present in the water.
(c) salt present in the water.
(d) heat present in the water.
► (c) salt present in the water.
2. Which one of the following is not a minor relief feature in the oceans:
(a) Seamount
(b) Atoll
(c) Oceanic Deep
(d) Guyot
► (c) Oceanic Deep
3. A major portion of sea level is found at:
(a) 10-12 kms below sea level
(b) 6-9 kms below sea level
(c) 3-6 kms below sea level
(d) 1-2 kms below sea level
► (c) 3-6 kms below sea level
4. The Coral reefs are a major characteristic of:
(a) Indian Ocean
(b) Pacific Ocean
(c) Atlantic Ocean
(d) Mediterranean Sea
► (b) Pacific Ocean
5. A mid-ocean ridge is an underwater mountain system formed by
(a) plate tectonics.
(b) earthquake.
(c) ocean currents.
(d) submarine landslides.
► (a) plate tectonics.
6. Along the coasts, salinity is:
(a) Lowered
(b) Increased
(c) Stable
(d) Unaffected
► (a) Lowered
7. Which one of the following is the smallest ocean:
(a) Indian Ocean
(b) Arctic Ocean
(c) Atlantic Ocean
(d) Pacific Ocean
► (b) Arctic Ocean
8. The factor affecting the distribution of temperature of ocean water is
(a) evaporation.
(b) precipitation.
(c) hydration.
(d) ocean currents.
► (d) ocean currents.
9. The salinity increases with depth and there is a distinct zone called
(a) isohaline.
(b) halocline.
(c) salocline.
(d) thermocline.
► (b) halocline.
10. ________ is the extended margin of each continent occupied by relatively shallow seas and gulfs.
(a) Oceanic Shelf
(b) Continental shelf
(c) Salocline.
(d) Hydra Shelf
► (b) Continental shelf
11. The continental slope connects the continental shelf and _______
(a) the conteinental shelf
(b) the halcoline
(c) the ocean basins
(d) none of the above
► (c) the ocean basins
12. ______ a mountain with pointed summits, rising from the seafloor that does not reach the surface of the ocean
(a) Halcoline
(b) Seamount
(c) Oceanic Shelf
(d) None of the above
► (b) Seamount
13. The shelf typically ends at a very steep slope, called ________.
(a) Halcoline
(b) Seamount
(c) Oceanic Shelf
(d) Shelf Break
► (d) Shelf Break
14. The geographers have divided the oceanic part of the earth into ______ oceans.
(a) Two
(b) Three
(c) Four
(d) Five
► (d) Five
