Waves Mastery Quest Regrade Blog Post

Question 4:
  
The actual answer is the second container because unlike the other two containers the molecules are compact and close to each other. Looking at it now you can see the first container represents water because its not really connected or bound to each other and more so fall around each other and the last container is a gas because they are spread far apart. In water since the molecules are not bound to each other like in a solid they don't carry a vibration as well as a solid aka the second container would and same with the air because it is very far spread out making the vibration of the molecule harder to carry. So therefore a the second container carries sound the most efficiently.

Question 5:
Amplitude is the measure of how much_________the wave is carrying
The actual answer is frequency because it amplitude will only pay attention to how high or low the wave is. Frequency is how high or low the pitch is. This will be shown with how high or low the wave is so amplitude measures that distance from the middle line meaning that unlike what I had answered which was energy which is not the case at all because even though there is energy in waves that doesn't mean amplitude measures that energy.

Question 6:
Cell Phones use______ waves.
Cell Phones use microwaves. You see cell phones use receive microwaves from the nearby phone mast. Then your phone send back microwaves. The short burst of waves or the microwaves can carry a ton of information extremely quickly. Think of texting you basically get  texts back instantaneously after they are sent and when do your texts send slower? Thats went you are furthest from a phone mast. A reason why you would use microwaves instead of something like gamma ray is because microwaves don't have enough energy to break chemical bonds meaning it cannot be harmful to things like your skin.
Sources:
https://www.technologyreview.com/s/423871/cell-phones-microwaves-and-the-human-health-threat/
https://www.peep.ac.uk/content/1310.0.html

Question 13:
_____ carry the greatest amount of energy.
Gamma rays carry the most amount of energy because they are the the highest on the electromagnetic spectrum. Gamma rays are also radioactive or have radiation making them much more powerful then something like a microwave. It is so powerful that it can break your skin and damage your cells. The higher the energy the more damage it causes to chemical bonds. So that is how you know they carry the most energy.

Question 25:
In a transverse wave,particles move?

As you can see a transverse wave moves back and forth for example this transversal wave in the photo is going to the right and once it hits a surface it will reflect and go to the left proving that transverse goes back and forth.

Question 26:
The action of a wave bouncing off a surface is called______?
It is called a reflection which makes sense because think of an echo which is a reflection of your voice. When your voice echoes back it doesn't alter but instead repeat what you had originally said. What I had originally chosen was diffraction which is a word to actually describe how light spreads out after crossing a narrow space or an edge. We know this is clearly wrong becasue we are referring to sound waves not light.

Question 29:
A ________ is the  distance between a point on one wave and the identical  point   of the next wave.
I had originally had answered frequency but frequency is not about the distance but more so how many waves pass in a certain about of time. Wavelength is measured from either trough to trough or crest to crest which is the bottom of the wave (trough) and the top of the wave (crest). When it says an identical point it means the nexts wave top or nexts waves bottom making it so wavelength is the answer to this question.