3/11 sound blog

https://kids.nationalgeographic.com/content/dam/kids/photos/articles/Science/A-G/bottled-music.adapt.945.1.jpg

Summary:
Sound is caused when molocules vibrate and they molocules hit eachother and they make the sound travel. Sound travels about 18 times faster through solids becaue solids have their molocule closer together so they hit eachother faster. Pitch is when a sound is higher or lower and a tempo is how fast or slow the sound is in things like a song. Pitch and tempo can do lots of things like change the mood and they can can set the tone for things like movies. Higher pitch and faster tempo is usually for happy moods and deeper and slower is usually more for sad. Sound is very important to know what is happening around you and to make having a conversation easier.

S&EP:
We did a lab where we would have different amounts of water in glass bottle and we would blow into them to see which ones would make a higher and a lower pitch. We found that when you are blowing into the bottle that the more water that there is the higher the sound is and the quieter it is . Then we would have to hit the same bottles to see if it would be the same situation. What we found is that when there is more water in the bottle that the sound is lower and the louder it is. When you are blowing into the bottle the air molocules vibrate because it makes a vacume of you blowwing the air in and the air that is coming out. When you hit the bottle the glass vibrates which vibrates the water and then the air which causes the sound.