hydrosphere & oceanography section 6 MCQ Questions & Answers Detailed Explanation

Question : 1

Echo sounding is the tech-nique applied to—

a) record the density of air in the atmosphere

b) record earthquake waves

c) measure the depth of the sea

d) measure the amplitude of sound waves

Question : 2

Spring Tide occurs

a) When the night is very cold

b) When a strong wind blows

c) When the Sun, the Earth and Moon are in a straight line

d) When the Sun and Moon make a right angle

Question : 3

Identify the correct statement regarding variation in density of ocean water and air at the same temperature—.

a) Ocean water is 200 times more denser than air.

b) Ocean water is 400 times more denser than air.

c) Ocean water is 800 times more denser than air.

d) Ocean water is 600 times more denser than air.

Question : 4

The sea surrounded by Italy, Sicily, Sardinia and Corsica is

a) Tyrrhenian Sea

b) Ligurian Sea

c) Adriatic Sea

d) Aegean Sea

Question : 5

Match rivers labelled (a), (b), (c) and (d) on the given map with their names given in the list and select the correct answer using the code given below the lists.

1. St. Lawrence
2. Orinoco
3. Mackenzie
4. Amazon
5. Yukon

a) 3 1 4 2

b) 5 4 1 3

c) 4 3 2 1

d) 5 3 1 2

Question : 6

Which one is not a depositional land form developed by the running water?

a) Delta

b) Natural levees

c) River terraces

d) Alluvial