64.What does the writer imply about the hypothesis of inflation? A.It hasn’t been challenged. B.It doesn’t make much sense. C.It is by far the most reasonable approach. D.It is the simple version of a complicated id...
How does sound going slower in water make it hard to talk to someone underwater? Describe the vibration of an air column in a flute. Why does sound travel slower in cold air than in warm air? What is is called (both terms) when something makes a sound but no one is around to hear...
This phenomenon, known as the Doppler effect, is due to the wave nature of sound. Loudness In general, an increase in intensity will cause a sensation of increased loudness. But loudness does not increase in direct proportion to intensity. A sound of 50 dB has ten times the intensity of ...
There is thunder(有字幕) 550900:37 How many books do you have(有字幕) 427700:33 How much is that coat in the window?(有字幕) 437700:44 This is my cap here(有字幕) 454900:51 How can you help your earth?(有字幕) 417900:37 The Little Indians(有字幕) 542000:55 In my bedroom(有字...
How does sound relate to energy?What Is Sound:Sound is a mechanical wave with a longitudinal shape. The vibrations of matter in sound wave trigger hair cells within our ears to send signals to our brain, which we interpret as sound.
"It's too late! Just sit down and hold on," shouted Toby's dad above the sound of the wind. "Don't be sorry. We can get through it."Just then, lightning (闪电) passed through the air and it started to thunder (打雷). At the same time, hard rain was falling. Waves tossed ...
Because that shockwave of sound moves much more slowly than light does, you will almost always see lightning strike a few seconds before you hear the thunder. This makes them seem like they are different things when actually they are two parts of the same thing. ...
How does thunder-snow work? Thunder-snow is rare because the conditions that produce snow tend to have a stabilizing effect on the atmosphere. In winter the surface and lower troposphere (对流层) are cold and there is little moisture to lead to lightning. Lightning super-heats the air, while...
Instead, they involve structure, pattern, repetition and other characteristics that make them recognizable to the human ear. In the end, music is a sort of science -- a fascinating, pulsating type of sound that peers through people's aural perceptions and into the universe beyond. We humans ...
Who’s 2.—___B__doesMaylooklike? —Sheisaprettygirlwithbigbrighteyesandlongstraighthair. 【2021·南通】 A. HowB. WhatC. WhichD. Who 【点拨】根据答语“她是一个长着明亮的大眼睛, 留着长长 的直发的漂亮女孩”可知, 此处询问外貌。固定句式 “Whatdoessb. looklike?”用来询问某人的外貌, ...