A. Mostly liquid B. Mostly vapor C. Mostly ice D. There was no water at all 相关知识点: 试题来源: 解析 B。解析:早期地球温度很高,水在这种高温环境下大多以水蒸气的形式存在。A选项在早期高温下不可能大多为液态。C选项早期地球温度高,不可能大多为冰。D选项根据科学研究,早期地球是有水存在的,只...
What layer of the Earth is liquid? Earth's Layers: The Earth has four primary layers: crust, mantle, outer core, and inner core. We live on the crust, which is by far the coldest and by far the smallest of all of the planet's layers. ...
but can also occur at lakes where waves are breaking. A rip current is the movement of water away from the shoreline and out to sea. When waves break on a beach water is pushed onto the land, and as the water flows back into the ocean it ...
Focusing on the hydrosphere, it encompasses all of Earth’s water, which is crucial for life. This sphere includes surface water, such as rivers, lakes, and oceans; groundwater that saturates the soil and rock beneath our feet; ice and snow found in polar regions and mountain peaks; and w...
A lake (from Latin lacus) is a terrain feature (or physical feature), a body of liquid on the surface of a world that is localized to the bottom of basin (another type of landform or terrain feature; that is, it is not global) and moves slowly if it moves at all. On Earth, a ...
However our fastest spacecraft don’t come anywhere near that one-tenth light-speed mark. At present scientists don’t know what the surface might be like on Gliese 581g. What they know is that the planet is at the sight distance from its star to have liquid water. It’s also at the...
Another practical application of centripetal force is the laboratory centrifuge, which is used to accelerate liquid suspensions. Centrifuges are key toolsused in blood sample analysis. Normally, thermal motion causes continuous mixing, which prevents gravity from forcing blood cells to settle out into ...
5.What factor did astronomers consider when calculating the required solar mass for liquid water to exist on Earth and Mars? A. The young Sun lost mass at a slower rate than it currently does. B. The young Sun was closer to the planets than it currently is. C. The young Sun had le...
I am thinking of architecture as a form of liquid. What I mean is that all kinds of conflicting desires and goals from the client, builder and architect shall be dissolved into a delightful kind of fresh liquid, which will then become an liquified architecture. Architects often have to say ...
part of Starship, is 20 feet (6.1 meters) tall. Starship sports six 3D-printed Raptor engines, giving it 5,550 kN of thrust. Three of the engines are designed for sea-level use, and the other three are for use in a vacuum. They use subcooled liquid methane and liquid oxygen ...