The deepest point in the Arctic ocean is___________

(a)

Java Trench

(b)

Fram basin

(c)

Puerto Rico

(d)

South Sandwich Trench

Hawaii islands are located on the_____________ocean.

(a)

Pacific

(b)

Indian

(c)

Atlantic

(d)

Arctic

The height of the waves depends on________

(a)

speed of wind

(b)

Its duration

(c)

the direction

(d)

All of the above

A very long narrow depression on the ocean floor is called

(a)

Guyot

(b)

Ridge

(c)

Trench

(d)

atoll

Consider the following statements.
1. Dragon Hole is the deepest known underwater sink hole in the world.
2. Epicentre of the great earthquakes are found in Abyssal plains.
3. Fathom means an imaginary line joining the points of equal salinity.
4. Salinity is maximum at the poles.

(a)

1 is correct

(b)

1 and 2 are correct

(c)

4 is correct

(d)

2 and 3 correct

Mention the four spheres of the earth.

Why is earth called a Blue planet?

Explain the term a) Water Table b) Aquifers

Explain the terms a) Isobath b) Isohaline

What role is played by NIO (National Institute of Oceanography)

Write a note on Fresh Water

Explain the terms a) Continental Rise b) Oceanic ridge

What do you mean by the term Hydrosphere?

Mention the various relief features of ocean floor.

What are the factors that generate the ocean currents?

Write a brief note on sea waves.

What do you mean by the ocean salinity?