Interferences

The difference between constructive and destructive interference is that contructive interference is when the crest of a wave has been combined  with the crest of another wave to increase its amplitude while a destructive iterference is when the crest of a wave is combined with the trough of another wave to decrease the amplitude they are the opposite of each other.

Constructive interference 

 An example of constructive interference is when someone is on a swing because the person keeps adding force on the swing to make the swing go higher. An exaple of destructive interference is whan you drop 2 drops of water in a pool (or anything that is holding a liquid) at different times.                                     
 
           

Destructive interference

   

Standing wave

Today we did a lab in class that was about making waves with different wavelenghts, we wanted to find out the frequency of the waves in 10 seconds. From this lab I learned that the more wavelength there is in a wave the less frequency it has. This means that if you have a wave with a wavelength of 6m its frequency is going to be small and if you have another wave with a wavelength of 1.2m the frequency will be higher, and an the end when you calculate the speed of both waves the 2 waves will have a similar speed.

No effect

I thought that the weather affected people's feelings but it really doesn't because some people might like rainy days but not sunny days and other might be the opposite or like both or none.

I also thought that the louder we talked the fastests we will ear but how loud or how low you talk doesn't affect how fast or slow we hear. I learned this because the teacher explained us.

Simple harmonic motion

You know that something is simple harmonic motion if it goes up, down or back and forth. An example of simple harmonic motion is a slinky because it goes up and down, another example is a pendulum because it goes to the sides and the last example is a guitar this is simple haemonic motion because when a musician strums a guitar the vibration of the string creates sound waves that we ear as music.

Electricity generator

   The generator that Im most interested in is the natural gas generator. I like this generator because its not expensive, you can use it anywhere, it burns cleaner, you get instant energy and its safer than the other generators. This generator works just as coal.




  Some disadvantages of using this generator is that is toxic and flammable, its non-renewable, and also its a complex procces. There are some disadvantages for using this generator but all the others also have disadvantages and this is one of the only generators that does not damage our animals.