How does the concept of sea -floor spreading help support the idea that continents drift (thereby supporting Wegener’s theory )? As magna is thrust up and hardens forming new crossed, the ocean for on both sides of the mid ocean ridge move outward carrying the continents along with them.

Sea floor spreading is the phenomena of new sea floor being created through mid-ocean ridges. Wegener proposed that the continents themselves move, which is untrue. Sea floor spreading caused the break up of Pangea, which prompted Wegener to add this in support of his continental drift theory.

False. Seafloor spreading explains Wegener’s hypothesis.

Seafloor spreading creates new oceanic crust at a mid-ocean ridge. On one side, the oceanic crust is subducted below the continental crust. On the other side, the two plates collide in a transform boundary, which is a horizontal type of movement. The latter is the closest we really come to continents drifting.

Deep-sea sediments can reveal much about the last 200 million years of Earth history, including seafloor spreading, the history of ocean life, the behaviour of Earth’s magnetic field, and the changes in the ocean currents and climate.

Bathymetry is the study of the “beds” or “floors” of water bodies, including the ocean, rivers, streams, and lakes. The term “bathymetry” originally referred to the ocean’s depth relative to sea level, although it has come to mean “submarine topography,” or the depths and shapes of underwater terrain.

Echo sounding is the key method scientists use to map the seafloor today. The technique, first used by German scientists in the early 20th century, uses sound waves bounced off the ocean bottom. The time taken for the sound to travel through the ocean and back is then used to calculate water depths.

bathypelagic zone

Mapping the seafloor is very challenging, because we cannot use the same techniques that we would use on land. To map the deep ocean, we use a tool called a multibeam echo-sounder, which is attached to a ship or a submarine vessel.

One day, a shark shed a tooth, which drifted hundreds of metres to the ocean floor. Gradually, as metals precipitated out of the sea and water within the sediment, the tooth became coated in minerals. And so began one of the slowest geological phenomena on Earth: the growth of a polymetallic nodule.

Google Maps’ Street View can also be used to explore the world’s oceans and dive underwater without leaving your seat. There are only selected underwater locations currently available, but the views are breathtaking. You can see lots of aquatic life and reefs from around the world.

Unusual grid patterns seen on maps of the ocean floor are created by ships taking higher-resolution sonar readings — to create better maps! The lines seen here show the paths taken by ships using sonar to map small sections of the ocean floor in greater detail.

“Property law states that territorial waters belong to the country and cannot be sold or bought. However, the country also protects usage rights that are acquired legally,” Zhang says.

Not in the United States. All navigable waters, both coastal and inland, within the territory of the United States are irrevocably public rights of way subject to federal jurisdiction and control; nobody can obtain a defensible title to a navigable body of water in the United States.

Kazakhstan

China

No Trade through water route(waterways) The country might become a less tourist attraction place as there would be no beech. Hot and continental climate throughout the country(extreme hot summer and extreme cold winter) No chance of Trapping Tidal and Ocean Thermal Energy.

List of Landlocked Developing Countries

• Afghanistan.
• Armenia.
• Azerbaijan.
• Bhutan.
• Bolivia (Plurinational State of)
• Botswana.
• Burkina Faso.
• Burundi.

South Sudan

Vatican City