What are the 3 evidences of continental drift?

The evidence for continental drift included the fit of the continents; the distribution of ancient fossils, rocks, and mountain ranges; and the locations of ancient climatic zones.

What is the importance of continental drift theory?

Continental drift, large-scale horizontal movements of continents relative to one another and to the ocean basins during one or more episodes of geologic time. This concept was an important precursor to the development of the theory of plate tectonics, which incorporates it.

What is the meaning of continental drift theory?

Continental drift was a theory that explained how continents shift position on Earth’s surface. Set forth in 1912 by Alfred Wegener, a geophysicist and meteorologist, continental drift also explained why look-alike animal and plant fossils, and similar rock formations, are found on different continents.

What is the current theory?

When a constant emf is applied across a network of conducting components there will be a short period during which the current will increase from zero to a steady value. The resultant steady current is referred to as a direct current and the theory of such currents is referred to as dc theory or dc network theory.

Is convection current a theory?

Convectional Current Theory is the soul of See Floor Spreading theory. According to this theory, the intense heat generated by radioactive substances in the mantle (100-2900 km below the earth surface) seeks a path to escape, gives rise to the formation of convention currents in the mantle.

Is Convectional current?

Answer: Convection currents transfer heat from one place to another by mass motion of a fluid such as water, air or molten rock. The heat transfer function of convection currents drives the earth’s ocean currents, atmospheric weather and geology.

What is the use of convection current?

Uses of convection – example Land and sea breezes are caused due to convection currents. Rising air over the land are convection currents and are used by glider pilots to keep their gliders in the sky. Air conditioners are installed near the ceiling of the room, to allow the setting up of convection currents.

How are convection currents are formed?

Convection currents are the result of differential heating. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth.