题目The ground is made up of different layers. What is the top layer called? A. crust B. mantle C. core D. surface 相关知识点: 试题来源: 解析 A。解析:地球的最上层是 crust(地壳)。mantle(地幔)、core(地核)在更深的位置,surface(表面)比较宽泛,不是专门指最上层。本题考查词汇理解。
What is the element astatine used for? What element is the building block for natural elements? What are all the natural elements? What are some chemical properties of einsteinium? What element is a neutron star made of? Which element is most abundant in the Earth's lithosphere?
What eight elements make up the Earth's crust? What elements comprise the largest portion of the Earth's biosphere? Is iron the most common metal in the Earth's crust? What is below the Earth's crust? Which layer of the Earth contains the crust?
Experts Used a 1.7-Mile Ice Core to See the Past What Created This Strange 'Ghost Island'? Dinosaur Highway Rife With Ancient Footprints Battling the Terrifying Rise of Mega Fires Scientists Find Surprise Hidden in Earth’s Mantle The Sun Turned Blue 200 Years Ago. Now We Know Why ...
What are the properties of Earth's inner core? What is the mesosphere mantle made of? What is the density of the Earth's mantle? What is the pressure of the Earth's mantle? How many elements make up the majority of Earth's continental crust?
What is continental crust composed of? Silicate Minerals: A mineral is a hard, inorganic substance (element or compound) found in nature. A silicate mineral contains silicate, which is an ion made of one silicon atom and one or more oxygen atoms. Silicate minerals are a major part of the ...
Is Basalt made of lava? Basalt is themost common composition of lava rocksthat cool from magma, liquid rock that rises from the deep Earth at volcanoes. What two minerals are in Basalt? Basalt is mainly made of two minerals:Plagioclase feldspar and pyroxene. ...
and hydrosphere—are made up of non-living components. Abiotic factors include elements such as minerals, gases, and water, all of which do not originate from living organisms. These spheres interact with each other and influence the Earth’s processes, shaping the environment in which life exist...
In that sense, Earth is probably unique. Although we may detect some life elsewhere, it will necessarily be completely different.从这个意义上说，地球可能是独一无二的。虽然我们可能会在其他地方发现一些生命，但那肯定是完全不同的。It was this mind-blowing series of improbable events that made Earth...
Rocky planets are made of (mostly) silicate rock, but depending on the elements present, different planets may have different types of silicate rock. The outer mantles of many rocky planets are dominated by either garnet or olivine, the mineral from which we extract peridot. Garnet is a ...