Firstyou should open the door but you should not run outit is very dangerous.Next when you find the furnitures are shake you should hide under the firmness furniture for about one minute.Then when you find the earthquake you should close the fire at once.Finallyyou should protect you head ...
How much do you know about the moon?Is it older or younger than the Earth?Where did it come from?Let me take you back to the earliest days of the Earth,four and a half billion (十亿) years ago.At that time,the Earth had no moon.It was moving around the Sun alone. The early ...
We live in a ‘throwaway culture‘, where many of our things aren’t built to last. Each year, every house in the UK produces about1 tonne of waste– that’s about the same weight as agreat white shark! What’s worse, is that60%of what we throw away, is actuallyrecyclable! That’...
信息压缩及改写题属于活用题。考生只要通读全文,就能在文章中找到与试题相关的信息,但是由于所给的信息往往过长,考生必须对这些信息进行再次加工,将信息压缩、改写成不超过三个单词的短语。如The boy is eight years old这一信息可考虑改写为an eight-year-old boy。这类试题在考题中占2—3题。
perceive light as moving away from them at more than 670 million mph. (That's because moving really, really fast is one of the only confirmed methods oftime travel— time actually slows down for those observers, who will age slower and perceive fewer moments than an observer moving slowly....
Unless it’s totally necessary to bring the whole apartment, moving abroad with only a few suitcases is the most ideal and hassle-free way to go. If you need to take more than that with you though, there are options for you, too. ...
"This critical mass depends upon many physical variables, among the most important of which is the rate of planetesimals accretion." Related: How fast is Earth moving? What is the disk instability model? While the core accretion model works for terrestrial planets, gas giants would need to ...
To understand how that's possible its first important to distinguish the difference between temperature and heat: Temperature measures how fast particles are moving, while heat is the amount of energy they transfer. NASA's Parker Solar Probe has been flying through the corona, gathering data for...
The aurora are caused by solar storms that throw vast numbers of fast-moving electrons and protons away from the sun in a twisting mass of electric and magnetic fields. These microscopic particles typically take two days to travel 150 million kilometers from the sun to Earth. These energetic ...
photography, we capture the movement of stars (stars do not rotate or revolve around the earth, but it is the earth that rotates along its axis helping us record movements that are recorded as star trails) that are caused by the rotation of earth. Longer exposure times give longer star ...