The Earth is made up of three layers. In the centre is the core, which is as big as the Mars and has a high 1 of over 7,000˚C. 2 the core is a thick layer called the mantle, 3 lower part is solid rock, 4 portion is molten rock called the magma. Floating on top of t...
In plate tectonics, Earth's outermost layer, or lithosphere—made up of the crust and upper mantle—is broken into large rocky plates. These plates lie ontop of a partially molten layer of rock called the asthenosphere. What is it called when tectonic plates collide? If two tectonic plates ...
plates float on a denser semi-liquid mantle, the layer between the crust and Earth’s core.The plates have edges that are spreading ridges (where two plates are moving apart and new seafloor is being created), subduction zones (where two plates collide and one plunges beneath the other), ...
The earthquake in Haiti occurred on a long fault or crack in the Earth's surface which goes across the island. This underground crack separates two giant tectonic (地壳构造上的) plates or slabs(石板) of rock that make up the Earth' s outer layer. Along the fault,the plates slowly rub ...
Geologic evidence shows that southern African has been slowly rising for the past 100 million years, yet it has not experienced a tectonic collision for nearly 400 million years.The explanation may be in Earth's mantle, the layer of rock underlying the tectonic plates and extending down over 1...
Which of the following statements about continental drift is false? A. When it was proposed, the idea received almost immediate acceptance. B. The lithospheric plates float on a fluid layer of molten rock. C. Continents move because...
The magma solidifies creating a volcanic layer. Subsequent volcanism builds a layer over layer and a volcanic mountain if formed. Such mountains are formed all along the converging edge above the less dense plate. Over time the mountains merge, and the oceanic crust gets transformed intocontinenta...
The earthquake in Haiti occurred on a long fault, or crack in the Earth's surface, which goes across the island. This underground crack separates two giant tectonic (地壳构造上的) plates, or slabs ( 石板) of rock that make up the Earth's outer layer. Along the fault, the plates slowly...
That layer is called graphite, one of the softest minerals in the world. Now stick the same piece of tape on another sheet of paper and pull the tape up---there should be an even thinner layer, this time left on the paper. Now imagine that you do this over and over, until you ...
The device comprises a support plate (2) and a rotating material supply unit (6) which is mounted on the support plate. The material supply unit produces a layer of a base material, where a controller (9) controls the material supply unit for producing the base material. The controller con...