Tag: tsunami and floods

Questions Related to tsunami and floods

Neap tides, i.e., small tides are caused when _____________________.

  1. Sun, and moon are at right angles

  2. Sun, earth and moon are in one line

  3. There is new moon

  4. There is full moon


Correct Option: A

The rise and fall of the sea-water at the surface at constant intervals is known as __________.

  1. Bore

  2. Tides

  3. Waves

  4. Water drift


Correct Option: B

Which of the following statements is not correct about the ocean currents?

  1. Currents do not exert an influence on the climatic conditions of the coasts

  2. Winds play an important role in the circulation of the ocean currents

  3. Currents are produced by the differences in the density of the sea water at different depths

  4. Direction of ocean currents is influenced by the shape and position of coasts


Correct Option: A

Which of the following is not an effect of the ocean currents?

  1. They effect commerce because they keep the harbours open even during winter

  2. Water of the ocean is kept pure

  3. Warm equatorial currents lower the temperature of the places through which they pass

  4. They do not effect rainfall over the coasts


Correct Option: D

Spring tides are caused, when _____________________.

  1. The earth, moon and sun are in a line

  2. The moon and sun are on a line

  3. The sun and moon are at right angles to each other and the earth is at the centre

  4. There is new moon


Correct Option: A

Neap tides occur _______________.

  1. On new and full moon days

  2. On first and third quarters of the month

  3. Twice daily

  4. On every full moon


Correct Option: B

The tides in the seas are influenced both by the sun and the moon. This fact is proved by ________________.

  1. The spring and the neap tides

  2. The bores

  3. Ebb tides

  4. Oceanic currents


Correct Option: A

Tides are caused because of ___________________.

  1. Gravitational pull of the sun

  2. Gravitational pull of the moon

  3. Gravitational pull of the earth towards its axis

  4. Difference in the temperatures of water of the sea at different depths


Correct Option: B

Which of the following is a type of wave ____________.

  1. Ripples

  2. Seas

  3. Swells

  4. All are the types of waves


Correct Option: D
Explanation:

Ripples are the instant effect of wind on water and they die down as quickly as they form, as the surface tension of the water dampens their efforts.

Waves always travel in the same direction as the wind is blowing: if the wind changes then the waves change with it. Wave size is determined by the strength of the wind, the length of time it has been blowing and the distance it has blown over or the ‘fetch’.

When strong winds blow for longer than a few hours, it gives the water sufficient energy that it then takes on a character of its own. This character and movement is known as swell, and it will march across open areas of water independent of the wind.

Which is the busiest of Ocean trade routes ?

  1. North Pacific Ocean

  2. Indian Ocean

  3. Arctic Ocean

  4. North - Atlantic Ocean


Correct Option: D
Explanation:
Atlantic Ocean
The busiest ocean from the point of view of trade is Atlantic Ocean.