Sound is ubiquitous. They can travel through solids, liquids and gases, but at different speeds. It blows through the trees (miles per hour) through 770 MPH, echoes the ocean at 3,270 MPH and resonates on solid rock through 8,600 MPH
. Guitar string, drumhead or clarinet. The rear and rear movement of the object (like the drumhead) creates a sound wave in the air that looks like a lake after throwing a rock. It radiates outward, vibrating adjacent air molecules until it is in motion. This chain reaction will continue until you reach your ear, where your "voice sensors" pick up the vibration and work on your brain to change your voice.
As long as there are molecules, though they are. Therefore, if you place the alarm clock in the glass jar and remove the air, there is no sound from the watch. There is nothing that transports vibrational energy. It's like trying to wave a frozen pond. The cliff just stops on the surface.
Sound can change your travel speed. Another soybean sound is pitch. If the speed slows down like the drum, the volume is low. The clarinet is high with reeds. Guitar runners can do both as they can be set. If you look carefully, you can see that low-pitch tapes vibrate back and forth, but high-band tapes move so fast that it's difficult to see. But you can recognize the effects of both ears. The ear volume is 20 to 20,000 Hz (per second). Bats and dogs can be far taller than we could!
Try some experiments with loud vibrations:
Bobby Pin Strummer: Straighten three bobby taps. (The bobbin pin when straightened has two different sides – a smooth side and a wavy side.) Place a rubber band tightly to the bottom of the empty tin can. Slide the bonnet with the garment below the front jaw. Add three garments of about 120 degrees. Stick to the rotten end of the cap on each lidding shield, so your contraction looks low like a chest with three feet. Strum all taps, one by one. What happens when the pins are fixed at different heights?
String Test: Press the length of the long threads and the length of the light thread through a punched hole in a box. Connect the ends inside the box with a paper clip to stay. The tin can have two different strings on the bottom. Place the box close to your ear as you scatter the fibers. Can you make high and low pitch? You can use other yarns, yarns, yarns, fishing rods, and so on.
Mystery Pitch: You can blow a whistling sound through the mouth of an empty soda or an aqueous bottle. Add a little water and try again. Add more water and try again. Add more water. What happens if you use a glass jar? Place an empty glass under the sink and blink to touch your side and hear the sound. Slowly charge the bottle with water while constantly touching. What if you use spoon? Knife? Whisk? Wooden Spoon? Which of the above two experiments will increase the course and reduce the course?
Phonograph: Lower the bottom of the empty plastic container (such as a buttercup or a yogurt container) by punching. Choose an old record to remember scratching and place it on the turntable. (You can put it in pencil for pencil type and spin, but it will be put into practice.) Use the new "pencil" and hear the music! The size of the container? What to do if you use a patch instead of sticking?
Easy Guitars: Pull up a rubber band longitudinally around a ruler. Press the pencil cross (perpendicular) below the rubber band. Stick to the rubber band. What happens when you move the pencil? What if you use a different type of rubber band? What to do if you use a different size ruler?
Sneaky Clocks: Place an alarm clock (a tick) or a timer that rings on the desktop. Now put your ears on the table. Fill a zipper bag with water and press it between the clock and the clock to hear the difference. Then place the watch in a closed metal box (like a baking tray or a coffee pot). What about the paper bag? A glass jar? A newspaper shoe box?
Stryo Phone: Make a phone by punching a small hole at the bottom of two glasses (foam, paper, tin … there's a difference), all of them. Attach the end of the tape inside the glass to a clip to keep the string. Cut the phones and tie up one end and try it out. What happens if you slink slinky into a variety of things, such as walls, metal chairs, wooden tables or floors? Tighten the spark and try the coat, the fork, the spoon or other kitchen utensils.
Source by Aurora Lipper