Sound is produced by vibrations. When an object vibrates, it makes sound. How is sound produced? A. By colors. B. By vibrations. C. By shapes. 相关知识点: 试题来源: 解析 B。解析:声音是由振动产生的,B 选项正确。A 选项颜色和声音产生无关,C 选项形状也不是声音产生的原因。反馈 收藏
Sound is produced by vibrations. This is a scientific ___. A. rule B. law C. fact D. principle 相关知识点: 试题来源: 解析 C。解析:声音是由振动产生的,这是一个科学事实。选项 A 规则、选项 B 法律、选项 D 原理都不准确。反馈 收藏 ...
To answer the question "Sound is produced by vibrations of ... located in the ...", we need to identify the correct terms to fill in the blanks.1. Identify the Components of Sound Production: -
Sound is the term to describe what is heard when sound waves pass through a medium to the ear. All sounds are made by vibrations of molecules through which the sound travels. For instance, when a drum or a cymbal is struck, the object vibrates. These vibrations make air molecules move....
Sound is produced by vibrations. What is the speed of sound in air? A. 340 meters per second. B. 340 kilometers per hour. C. 3400 meters per second. D. 3400 kilometers per hour. 相关知识点: 试题来源: 解析 A。解析:声音在空气中的传播速度是 340 米每秒。选项 B、C、D 速度错误。
[难句分析★ The vibrations travel in waves.振动以波的形式传播。travel此处意为“传播”。wave作名词,意为“(光、声、无线电等的)波;波浪”,作动词意为“挥手,挥舞”。 结果一 题目 hat is sound?Sound isWcreated when an objectvibrates(振动).Thevibrations travel in waves.Sound waves reach our ...
Sounds may originate from radiation pressure produced when the ultrasound beam is absorbed by tissue or reflected from bone or the metal hydrophone. This implies that although ultrasound cannot be heard per se, any modulation of its intensity will produce vibrations in the maternal tissues or ...
Sound, however, is more general in application, being used for anything within earshot:the sound of running water.Noise, caused by irregular vibrations, is more properly applied to a loud, discordant, or unpleasant sound:the noise of shouting.Tone is applied to a musical sound having a ...
4. The term is also used to describe the distance over which a sound can be heard, which is influenced by factors such as the loudness of the sound and the presence of obstacles.5. Subjectively, "sound" can represent an impression or sensation caused by something, which may ...
is more general in application, being used for anything within earshot:the sound of running water.Noise,caused by irregular vibrations, is more properly applied to a loud, discordant, or unpleasant sound:the noise of shouting.Toneis applied to a musical sound having a certain quality, resonance...