Answer:
1- Two tectonic plates separate as they are pulled apart by convection in the mantle.
2- Molten material from the mantle rises up towards the surface due to convection and fills in the rift.
3- New oceanic crust is formed.
4- The crust slowly moves away from the ridge equally on either side.
5- Overtime, the creation of oceanic crust will cause continents to move.
Explanation:
Oceanic plates get separated and the spaces left among them are filled with magma coming from the mantle. When the magma reaches the surface, it suffers physical and chemical changes at the moment it gets in touch with the cold ocean water. The magma temperature descends and turns into a new oceanic crust. Plates keep separating from each other, and the new oceanic crust moves forward each side of the crest making a place for the ascension of new fluid hot material from the mantle. This constant process is what makes the continents eventually get separated each time more.
The coastline experiences tidal bulge twice a day. :3 Good luck!
Answer:
sand; clay
Explanation:
Soils composed mostly of primary minerals will tend to have a higher percentage of sand and a lower percentage of clay than soils composed mostly of secondary minerals.
Soils are porous medium that are made up of minerals, organic matter, water, gases, and microorganisms. Soils are mostly composed of minerals (about 45% to 49%) which are derived from two main mineral types; primary and secondary minerals. Primary minerals are usually derived from igneous and metamorphic rocks in soil, while secondary minerals are produced from the weathering of the primary minerals. Soils that contain mainly primary minerals usually have high amount of sand and silt, and a low amount of clay than soils that contain mainly secondary minerals. Examples of primary minerals are K-feldspars (such as sanidine and orthoclase), and micas (such as biotite).
