Geography · Environmental Studies

Oceanography and Hydrology

1,743 Questions

Find relevant questions on oceanography and hydrology that address aquatic ecosystems and physical geography. The topics include coastal landforms, coral reefs, ocean salinity, and tidal patterns. These concepts frequently appear in civil services and state level administrative examinations.

Coral reef structuresCoastal landformsOcean salinity patternsGlacial retreat impactsMangrove ecosystems

Oceanography and Hydrology Questions

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

The distance between two adjacent wave crests is called ____________.

  1. wave crest

  2. wave trough

  3. wave length

  4. wave height
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Wavelength is the distance between one crest or trough to the next crest or trough. It is the distance between identical points in the adjacent cycles if a waveform signal propagated in space or along a wire.

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

The vertical distance between the crest and trough of the wave is called the ____________.

  1. wave trough

  2. wave length

  3. crest period

  4. wave height
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Wave height is the distance between the crest and trough. The wave height of a surface wave is the difference between the elevations of a crest and a neighboring trough. Wave height is a term used by mariners, as well as in coastal, ocean and naval engineering.

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

As the speed of the wind increases, the strength of the wave ____________.

  1. increase

  2. decrease

  3. remains same

  4. became calm
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Waves in the sea surface are generated by the action of the wind. The height of the wind waves increases with the increasing wind speed and with increasing duration and fetch of the wind. As the speed of the wind increases, the strength of the wave also increases.

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

In the ocean, water moves horizontally over vast areas due to _____________.

  1. temperature difference

  2. density

  3. waves

  4. slope of ocean floor
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Waves are actually the energy, not the water as such, which moves across the ocean surface. Water particles only travel in a small circle as a wave passes. Wind provides energy to the waves. Wind causes waves to travel in the ocean and the energy is released on shorelines. Thus, it is due to waves only that water moves horizontally over vast areas.

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

Water waves are a manifestation of ______ moving through the ocean.

  1. Heat

  2. Density

  3. Energy

  4. Velocity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Waves are actually the energy, not the water as such, which moves across the ocean surface. Water particles only travel in a small circle as a wave passes. Wind provides energy to the waves. Wind causes waves to travel in the ocean and the energy is released on shorelines.

Multiple choice physics gravitation tides movements of ocean and sea water circulation of ocean water

What are known as tides?

  1. Alternating rise and fall in sea level with respect to land

  2. Alternating rise in sea level with respect to land

  3. Alternating fall in sea level with respect to land

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Rise and fall of the surface of the Earth's water body due to the gravitation pull of the Moon and the Sun on the Earth is tides.

Multiple choice physics gravitation tides movements of ocean and sea water circulation of ocean water

The tidal waves in the seas are primarly due to

  1. the gravitational effect of the Sun on the Earth.

  2. the gravitational effect of the Moon on the Earth.

  3. the rotation of the Earth.

  4. the atmospheric effect of the Earth on itself.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Although tides are caused due to all the above reasons, the main reason behind it is the gravitational effect of the Moon on the Earth. Moon is closed in a bound state with Earth, and due to this the effect of its gravitation is more on Earth than that of Moon on Earth.

Multiple choice geography temperature process of heat transfer in the atmosphere temperature and insolation sun: the ultimate source

Ocean current is a powerful factor for affecting distribution of ____________.

  1. temperature

  2. pressure

  3. heat

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ocean current is a powerful factor for affecting the distribution of temperature. The effect of ocean current upon the temperature of adjacent land areas are variable, depending on the direction of prevailing wind. The warm ocean currents help to raise the temperature of the adjoining regions.  On the other hand, cold ocean currents lower down the temperature of the adjoining region.