Sound is a wave that is produced by objects that are vibrating. It travels through a medium from one point, A, to another point, B. As is true of all types of waves, specific behaviors, properties, and characteristics apply to sound waves. Similar to the slinky wave described in the ...
1hat is sound?Sound isWcreated when an objectvibrates(振动).Thevibrations travel in waves.Sound waves reach our ears.The ears send a message to the brain.That's how wehear different sounds!A sound can be loud or quiet.Itcan have a high pitch(音高)or a low pitch.Here are9a few diffe...
23. What can we learn from this passage? A. Sound waves are very important to help the potatoes grow. B. Potatoes like the men. C. Potatoes like the women. D. Potatoes can grow without light and water. 相关知识点: 试题来源:
Student: Are you going to talk at all about the difference between radio waves and sound waves? 学生:你将讨论无线电波和声波的区别吗? Professor: Uh, Ok. That might be a good place to start actually. 教授:好吧,这或许会是一个不错的出发点。 Sound waves are mechanical in nature, right? ...
Step by step video & image solution for (a) What is sound? What type of waves are sound waves in air? (b) Describe an experiment to show that sound cannot pass through vacuum. by Physics experts to help you in doubts & scoring excellent marks in Class 9 exams.Updated on:21/07/2023...
There are two types of waves. One involves a series of compressions followed by rarefactions. This type of wave is called a longitudinal wave. The other type is the transverse wave. This type of wave consists of waves and troughs.
A. Make change in sth. B. Make things better. C. Let sb. do sth. D. Bring sth. to sb.(B)3. Which of the following sound is not white noise? A. Rainfall. B. Ocean waves. C. Children's crying. D. Wind blowing(C)4. Why is “No sound is not good”? A. Because people ...
① When there isn't air, we can't hear.Hearing② Smell helps the body feel pain, cold and heat.Sounds travel through the air(空气) like waves(波). Sound③ Dogs have a better sense of smell than humans.waves are much slower than light. So you always see lightning④ Young people ...
Shock waves are acoustic waves. They require a medium such as water or air for propagation. In general, medically used shock waves are generated in water outside the body and then transmitted to the biological tissue. As tissue mainly consists of water, it has very similar sound transmission ...
Sound waves are created by object vibrations and producepressure waves, for example, a ringing cellphone. The pressure wave disturbs theparticlesin the surrounding medium, and those particles disturb others next to them, and so on. The pattern of the disturbance creates outward movement in a wave...