Tag: movements of ocean and sea water

Questions Related to movements of ocean and sea water

Who should be evacuated first when hit by a tsunami?
This question has multiple answers.

geography ocean tsunami and floods movements of ocean and sea water oceanic circulations disasters - case studies man made disaster

  1. Children

  2. Aged persons

  3. Men

  4. Physically handicapped

Show answer
Correct Option: A,B,D
Explanation:

Initially Children, Aged Persons and Physically handicapped peoples should be evacuated first because they might panic and may have difficulties in finding a way out. They need external helps to evacuate.

Red Sea is located in Indian Ocean. What is its total area?

geography water bodies movements of ocean and sea water oceanic circulations circulation of ocean water study of water pollution threats to water resource pollution and environment

  1. 438,000 sq. km

  2. 218,000 sq. km

  3. 348,000 sq. km

  4. 638,000 sq. km

Show answer
Correct Option: A
Explanation:
438,000 km²
The Red Sea has a surface area of roughly 438,000 km2 (169,100 mi2), is about 2250 km (1398 mi) long and, at its widest point, 355 km (220.6 mi) wide.

Scheme implemented under the Ganga Action Plan is ________________.

geography tides movements of ocean and sea water circulation of ocean water ocean water movement

  1. Waste water treatment

  2. Electric crematorium

  3. River front development

  4. All of these

Show answer
Correct Option: D
Explanation:

The Ganga action plan was, launched by Shri Rajeev Gandhi, the Prime Minister on 14 Jan. 1986 with the main objective of pollution abatement, to improve the water quality by interception, diversion and treatment of domestic sewage and present toxic and industrial chemical wastes from identified grossly polluting units entering into the river.


Hence, the correct option is $\text{D}$

The term "Bore" signifies _____________.

geography tides movements of ocean and sea water circulation of ocean water ocean water movement

  1. To drill a well

  2. a wave caused by tides

  3. a wave cause by air

  4. To extract water from earth

Show answer
Correct Option: B
Explanation:

A tidal bore, often simply given as bore in context, is a tidal phenomenon in which the leading edge of the incoming tide forms a wave (or waves) of water that travels up a river or narrow bay against the direction of the river or bay's current.

The spring tide occurs when the moon, the sun and the earth make in angle of _______.

geography tides movements of ocean and sea water circulation of ocean water ocean water movement

  1. $180^o$

  2. $90^o$

  3. $45^o$

  4. $33^o$

Show answer
Correct Option: A
Explanation:

The spring tide occurs when the moon, the sun and the earth make in angle of $180^0$.

They occur when the Earth, the Sun, and the Moon are in a line. The gravitational forces of the Moon and the Sun both contribute to the tides. Spring tides occur during the full moon and the new moon. During the moon's quarter phases the sun and moon work at right angles, causing the bulges to cancel each other.

Neap tides are produced in the first and third quarters of the moon. Then _______.

geography tides movements of ocean and sea water circulation of ocean water ocean water movement

  1. Moon and the Sun are in conjunction with the other planets

  2. Moon and the Sun are in opposition with each other

  3. The attractions of the Sun and the Moon are at right angles to each other

  4. The Moon and Sun are in quadrant position to each other

Show answer
Correct Option: C
Explanation:

Neap tides are produced in the first and third quarters of the moon. Then the attractions of the Sun and the Moon are at right angles to each other.

Neap Tides
During the moon's quarter phases the sun and moon work at right angles, causing the bulges to cancel each other. The result is a smaller difference between high and low tides and is known as a neap tide. Neap tides are weak tides.

The difference between high tide and low tide is __________.

geography tides movements of ocean and sea water circulation of ocean water ocean water movement

  1. Tidal range

  2. Tidal width

  3. Tidal height

  4. None of these

Show answer
Correct Option: A
Explanation:

  • Tides are the rise and fall of sea level caused by the combined effects of gravitational forces exerted by sun, moon and earth.
  • Tidal range is the vertical difference between high tide and its succeeding low tide.

The average time interval between successive high tide and low tide is _____.

geography tides movements of ocean and sea water circulation of ocean water ocean water movement

  1. 12 hours and 26 minutes

  2. 6 hours and 12 minutes

  3. 24 hours and 52 minutes

  4. 50 minutes

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Correct Option: C

Which waves caused by the earthquakes cause maximum damage and destruction on earth's surface?

geography tides movements of ocean and sea water circulation of ocean water ocean water movement

  1. P waves

  2. S waves

  3. Distortional waves

  4. Surface waves

Show answer
Correct Option: D
Explanation:

During an earthquake, surface waves cause the most damage. Unlike other seismic waves that move deep inside the Earth, surface waves move along just under the surface of the Earth like waves in water. Surface waves are the slowest seismic waves and are the final waves to hit an area after an earthquake. 

First, P-waves move through compression through the deep layers of the Earth. P-waves are also carried by air and water, causing them to make a sound when they hit the Earth's surface. They result in minimal damage. The second group of waves is S-waves. They move up and down starting deeper in the Earth, and they cannot travel through air or water. Stronger S-waves do some damage when they reach the surface. Surface waves move in last. Their slow roll just under the surface provides the greatest risk for damage to man-made structures and changes to natural landforms.

Ocean waves are used for generating ______.

geography tides movements of ocean and sea water circulation of ocean water ocean water movement

  1. light

  2. power

  3. food

  4. wind

Show answer
Correct Option: B
Explanation:

Ocean waves are used for generating power.
Wave Power:  Wave energy is produced when electricity generators are placed on the surface of the ocean. The energy provided is most often used in desalination plants, power plants and water pumps. Energy output is determined by wave height, wave speed, wavelength, and water density.