True
Silting refers to the build-up of silt on the bottom of the harbor or port. This build-up or silting will reduce the effective depth of the harbor or port, and dredging will have to be conducted to remove it to restore depth to the port. Silting results from the emptying of a river or waterway into a bay where the port is located, or it could result from the action of tides and/or currents in the ocean. Any of these represent the action of moving water, and when water moves, it can carry with in any number of things, including fine sediment that settles out as silt.
I have been thinking about this question and after much thought I think it would take 2-3 days to cross the Channel and the time frame depends on the time of year and currents. I came to this conclusion by using the Spanish Armada crossing as an example. Ships mainly followed coast lines until the early 1400's when several inventions allowed for changes in the ships, maps, and tools needed for exploring. So, the crossing of the channel was rare in the middle ages.
Bureaucracy! That is the main problem of the empire and mostly the republic. The republic fell because the size of the empire was to big, the events were moving rapidly and there was no time for bureaucracy, voting, debating and so on. When Rome became an empire it didn't of course change immediately. Some parts of the republic stayed enact. One of them was administrative bureaucracy. Luckily for the empire, after the third century crises, Diocletian started the dominate where the senate lost almost all of its power thus providing the empire with a more effective style of government where one man or two men, later three or four gave direct orders without having to debate and vote. That gave the empire 200 years more to live, although because of its size and changeable political currents it was never to last as a permanent state.
true
Convection Currents.
no
Eastern boundary currents are relatively shallow, broad, and slow-flowing. Western boundary currents are warm, deep, narrow, and fast-flowing currents that form on the west side of ocean basins due to western intensification.
Eastern boundary currents are relatively shallow, broad, and slow-flowing. Western boundary currents are warm, deep, narrow, and fast-flowing currents that form on the west side of ocean basins due to western intensification.
Eastern boundary currents are relatively shallow, broad, and slow-flowing. Western boundary currents are warm, deep, narrow, and fast-flowing currents that form on the west side of ocean basins due to western intensification.
A gyre is a current driven by the wind. The western boundary currents tend to be warm in temperature, and fast in speed. They are also deeper than the cold and slow eastern boundary currents.
Most of the ocean currents are affected by global winds and the Coriolis effect, which states that the apparent curving of the path from an otherwise straight path is due to the Earth's rotation. The movement of the ocean currents are also affected by the continents: because of global winds and the Coriolis effect, most of the ocean currents want to move a different way than they actually are because they are deflected off of the continents. An example is the South Equatorial Current and the Benguela Current flowing in a circular motion in between the east coast of South America and the West Coast of Africa. If these continents ceased to exist, the directions of the currents would change, based on the global winds in that area and the Coriolis Effect.
jj
convection currents in the eath's mantle
convection currents in the eath's mantle
The mantle convection currents beneath a continental convergent boundary will heat up and rise. They are heading toward each other, therefore, causing the two continents to collide.