22.A.细节理解题.根据文章最后一段的"…at this point the water is dense enough for the egg to float."可知加入盐的水密度比较大,可以导致蛋漂浮起来,故答案为A. 23.C.细节理解题.根据文章最后一段"…the denser the liquid is,the easier it is for an object to float in it."可知液体的密度比较...
18.He wants to know why empty glass bottles can float(漂浮) on the water. He should ask his C teacher for help. A. music B. art C. physics D. maths 相关知识点: 试题来源: 解析 答案见上18.C[提示:考查名词辨析。 句意:他想知道 为什么空玻璃瓶会浮在水面上。 他应该向他的 老 师寻求...
Why do things float in water? Objects are made up of very tiny molecules. Molecules can be packed in close together like in a rock or more spread out like in bubble wrap. The positioning of molecules affects the density of an object. Objects with tightly packed molecules are more dense th...
`dad joke` noun - a dad joke is a short joke, typically a pun, presented as a one-liner or a question and answer, but not a narrative. Generally inoffensive,…
Why do pumice stone float on the surface of the water? A.They are comparatively smaller. B.They contain special materials. C.They are not real stones. D.There are pores in the stone. 点击查看答案进入小程序搜题 你可能喜欢 如何快速将图片设置为素描等艺术效果? A.选择“格式”下的“压缩图片...
Why might an egg float in saltwater but sink in fresh water?
When a needle is carefully placed in water, it would continue to float even if its density is greater than water. The main reason is that the force...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your ...
Why does ice float in liquid water?Properties of Water:Water is one of the most common substances on earth. It is the universal solvent, and is necessary for life on earth. Frozen water is known as ice. Gaseous water is know as steam or water vapor....
Water is a special substance for several reasons, and you may have noticed an important one right in your cold drink: ice. Solid ice floats in liquid water, which isn't true for most substances. But why? George Zaidan and Charles Morton explain the science behind how how hydrogen bonds ke...
When the floating stool sticks to the side of the toilet bowl and is difficult to flush, or an oily sheen appears on the surface of the water, fats in the diet are likely left undigested. So what can be done about floating poop? Talk to a trusted health practitioner about the health ...