The cooling of the young Earth had many major effects on the Earth system. One of them and its importance to other spheres is............ A- Formation of the dense, solid core of the planet. B- Formation of sedimentary rocks by erosion C- Formation of magnetic field which save Earth's atmosphere D- Formation of oceans as the continents continued to separate

Which two factors caused Earth and the other planets to become layered during the formation of our solar system?

How has Earth changed during our current era?A.Dinosaurs became the dominant life form on Earth.B.Dense forests developed.C.Earth cooled enough to form solid rock.D.The oceans formed from water vapor in the atmosphere

17.  Earth’s inner core is...*1 pointa dense ball of solid metal.a layer of molten metal.a layer of hot rock.a layer of rock that forms Earth’s outer skin.18.  According to the theory of plate ____________________, Earth’s plates move very slowly in various directions.*1 pointAbrasionTectonicsLong shore DriftLithosphere19.  Scientists think that the ____________________, made of iron and nickel, moves to produce Earth’s magnetic field.*1 pointInner CoreOuter CoreAbrasionTectonics20.    Which layer of the earth is completely Liquid?*1 pointCrustOuter CoreMantleInner Core

Wegner's idea of Continental drift was based on __________.2 pointsthe continents and ocean floor are solid because they are hardened magmaconvection in the mantle and gravity slowly move continents around on the Earth’s surfaceocean waves push the continents over the surface of the earththe continents, once joined together to form a large landmass, have moved over time.

The ....process began under the influence of gravity to make the crust, the mantle and the core of Earth A- Subduction B- Accretion C- Orogeny D- Differentiation