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 ...
This field delves into the many layers of the Earth and explains how those pieces fit together into a cohesive structure. The interdisciplinary subject not only provides insight into the mechanics of the solid parts of the planet, but also illustrates the inner workings of the liquid and gaseous...
very cold. The planet might have a liquid environment, meaning life exists in the darkness. The rather imaginatively named planet WISE 0855-0714 is the closest rogue planet to our solar system at a distance of 7 light-years. They are discovered when they pass before a star because they do...
Water is found in all three states on Earth which are gas, liquid, and solid. As gas, water is found as water vapor in the atmosphere. In liquid form water is found in streams, rivers, lakes, ponds, and oceans along with mist in the air and as dew on the surface of the ground....
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...