Kids are going to love learning about theLayers of the Earth for Kidswith this fun lesson onwhat is the earth made of. This lesson for preschool, pre-k, kindergarten, first grade, 2nd grade, and 3rd graders will use some funEarth Science Experimentsto study the layers that make up our ...
The Earth is made up of many different materials. What is the main material of the Earth's core? A. iron B. silicon C. oxygen D. carbon 相关知识点: 试题来源: 解析 A。解析:地球的核心主要由 iron(铁)组成。silicon(硅)、oxygen(氧)、carbon(碳)不是地球核心的主要材料。本题考查科学知...
题目The atmosphere protects the earth. What is the atmosphere made of? A. Gas and dust B. Water and fire C. Earth and moon D. Stars and gas 相关知识点: 试题来源: 解析 A。本题考查对大气层组成的了解,大气层由气体和尘埃组成。B 选项水和火不对;C 选项地球和月亮不对;D 选项星星和气体...
a当你想告诉别人peter在公园时,说什么? When you want to tell others peter when the park, what said?[translate] a当你想告诉别人peter在公园 When you want to tell others peter in the park[translate] awhat the earth is made of 由什么做成地球[translate]...
Layers of the Atmosphere The Earth’s atmosphere has five main layers and a sixth layer, the ionosphere, that overlaps the mesosphere, thermosphere, and exosphere. The five vertical layers of the atmosphere are: Troposphere Stratosphere Mesosphere ...
Earthquakes What causes earthquakes The earth is formed of layers. The surface of the earth, about 100 kilometers thick, is made of large pieces. When they move against each other, an earth quake happens, A large movement causes a violent earthquake, but a small movement causes a mild one...
are low in water and cannot account for even the minimum Earth water budget if they are also responsible for the ``late veneer." The Mg/Si ratio of PUM is high compared to enstatite, ordinary, and carbonaceous chondrites, leading some workers to propose sequestering Si in the lower mantle...
But these data still do not tell us exactly what trace elements are found in the subterranean depths of our planet. "Seismological studies of earthquakes inform us about the Earth's core, mantle and crust, but it's hard to convert this information into an elemental composition," said ...
The Earth is broken up into layers. The outermost layer is the crust- that’s what you’re standing on. About 30 km below your feet is where the next layer of the Earth, the mantle, starts. The mantle makes up the majority of the interior of the Earth, and its composed of heated ...
Schefter, Jim