Rough and dull smooth and shiny rough and shiny smooth and dull ℹ baka baka. An echo is a sound that is repeated because the sound waves are reflected back. Reflection Discovery Of Sound In The Sea Sound bounces off the surface of the medium which can be a solid or a liquid. . Answer 1 of 11. Waves tend to reflect best off flat smooth hard and shiny surfaces. Mass and density help with higher sound pressure levels. Sound waves can bounce off smooth hard objects in the same way as a rubber ball bounces off the ground. Hardness keeps the material from absorbing the sound too much. This is called reflection. When a sound wave in air reaches the surface of another material some of the sound is reflected off the surface while the rest of it goes into the material. If they meet a soft surface such as a cushion they will be absorbed and will not bounce back. Hence smooth flat walls that cannot move away from the ...
Avoid images that show significant landmarks near their base of operations and black out last names and unit affiliations. Army Opsec Level 1 Crossword Answers The Question Word That Describes A Time An interrogative word or question word is a function word used to ask a question such as what which when where who whom whose why whether and how. Opsec Level 1 Crossword At Level Army opsec level 1 crossword answers the question word that describes a time. . But beginning in the 14 th century writers started to use the vernacular in their works which slowly chipped away at Latins central importance in education. WHEN-the question word that describes a time PROCEDURES- the P in the acronym TTP WHERE- the question word that describes a place TECHNIQUES-the second T in the acronym TTP LIMITATIONS-the L in the acronym CALI HOW-the question word that describes a method WHO-the question word that describers a person or group. â a five-step process ...
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