Doppler Radar

A doppler radar is a machine used by weather people such as the ones in the news. This machine sends waves that collide with other waves in the outer areas, sending waves back to inform what's going on. If the waves sent by the doppler radar send back some kind of wave, the doppler catches that information. With that information is how we predict if it's going to rain or snow.

Interference

Constructive interference is when the crest of a wave is super positioned with the crest of another wave (or trough with trough). Destructive interference is when the crest of a wave is super positioned with the trough of another wave. An example of both would be sound waves. We can tell that it's constructive interference when the sound is louder and when it's destructive the sound gets quieter.

Standing Waves

In today's class, we learned about standing waves. We learned that waves happen with a frequency, and that standing waves are just a pattern of waves. I also learned that the top a wave is called the crest and the bottom of the wave is called a trough. So after learning a few of these things, we did a lab. In this lab we used a slinky as the "wave" and there was a student at each side of the slinky. One of the students added force into the slinky to make the waves. 

No Effect

In my life, I always thought that beauty was everything. That if one wasn't beautiful, you wouldn't be anyone. That's just what society made me think. I always thought that people wouldn't want to talk to me because I was different to everyone else. But then, I realized that it wasn't like that. I realized that beauty was nothing important, and what's inside all that matters. I've made so many friends in such a short period of time, and that makes me more confident.

Simple Harmonic Motion

You would know how sonething is a harmonic motion if the object moves up or down/ side to side and changes from Kinetic energy to Potential energy without adding anymore force. One example of harmonic motion that I've seen today have been the lucky cat. This cat is a harmonic motion because its paw moves up and down at a constant rate without any force been added. Another example of a harmonic motion that I've seen today  was the washer in the string in today's lab. This is harmonic because it moves from side to side changing from kinetic energy to potential energy constantly. Another harmonic motion object I saw today was a slinky. This slinky is a harmonic motion object because once you let some of it go, and hold it in the air, the spring moves up and down changing from kinetic to potential energy.

Electricity Generator

The generatir I'm mostly interested in is the wind power generator. I choose this generator because it is a very clean way of producing energy. I find this interesting because of the quick and easy way such an important thing so easily and quick. This wind power generator makes energy by using a large turbine that usually has propellers. This turbine can be used with the wind and produce mechanical power. This wind power generator is one of the best forms because besides being clean and keeping the environment clear, it is also renewable. Meaning it would never run out. But, the only bad thing about this form is that this is not on demand. This isn't really much of a problem because it can actually be put on demand if the right people are found.

Homework Check

I have done all of my blogs!

Appliance

This is from my christmas tree lights.

This is from my tv cable box.

This is from my outdoor water fountain.

Circuit Diagram

I believe that the idea of symbols is a way that we could represent something without words. I think we use symbols for a circuit diagram mostly to represent without words as well because it's a diagram. We want to express a drawing without using words. I think that using symbols helps us understand the object we are talking about easier, for example a light bulb is mostly shown as a circle and a wire inside of it, because that's how light bulbs are. Something that is kind of hard is understanding what some of the symbols mean. Some people don't know what some symbols might mean, for example resistors. Resistors are just triangle lines, no one knows what it is until it is explained unlike a light bulb or a switch.

Pretzel Circuit

I was absent this day because I had an appointment, but I will answer this to the best of my ability.

As I was told, the pretzels represented volts, and the students represented the electrons. The pretzel bag was the battery. I was also told that in the series circuit, you got two pretzels and you had to give one to one light bulb and the other one to the other light bulb. But for the parallel circuit, you got to choose which light bulb you would give 2 pretzels to.

No Wires World

If I lived in a world where electricity doesn't need to flow through wires to light things up or make things work, I think it would be a really dangerous world. I would definitely name this world Free-Flow. One cool thing would be that there would be negative charge in every conductor, I think this would be cool because think about the pain your friends would go through everytime they touched sonething. But one horrible thing that could happen while this electricity flows everywhere must be the idea of getting shocked every 0.001 seconds. Water would eventually come in contact with this electricity and most of the world could definitely burn down.

Electricity So Far

Electricity is composed of equal positive, negative, and neutral charge. Electricity is very important for humanity because nowadays we use a lot of electronic devices. We also need electricity for such things as stoves, lights, and any tools that we need that require electricity. I'm getting better at understanding circuits and I think it's very important to know this because if one time the electricity goes out we at least know a base to start with in order to fix the problem.

Electric Vocabulary

Based on my knowledge about electricity, I believe it's a very fun topic to talk about and it's also very important for the human use. Electricity is made up of several things. It all starts in a nucleus, where atoms such neutrons (neutral charge) and protons (positive charge) are located. This nucleus is surrounded by electrons, which is actually negative charge. Electricity flows through conductors. Conductors are actually made up materials that allow electrons (negative charge) to flow through freely. Electricity does not flow through insulators, the electrons just sit there. For example a balloon; a balloon is an insulator because once the static energy has reached the object it just sits there and attracts positively charged objects.

Van De Graaff

Today in class as we used the Van De Graff object, I noticed myself very intrigated into the things that were going on. First thing I noticed was how the electricity was moving throughout these objects. It went from the electricity plug, to the cables that connected to the machine, this electricity traveled through a belt and the electrons from this belt were given to a piece of metal that gave the electricity to the giant metal ball. When a conductor was near this giant ball negative energy {electricity} was released to this object. I think that the physics behind this process is how the neutrons flow from the electricity all the way to this ball and it is released to other objects while being visible as well.

Insulators and Conductors

Today, I came accross a few conductors and insulators. One of the insulators was a cup made out of glass. This glass is an insulator because it blocks in the flow of electricity. One of the conductors I came accross with today was the water inside my glass. The water is actually a conductor because electricity flows through it easily in difference with the conductors. 

Electric Light

Today in class we did an activity to light up a light bulb with a battery, light bulb, and a wire. We had to place one part of the wire connected to one side of the battery, and the light bulb to the other side of the battery, then the other end of the wire (the one that it's not connected to the battery) needs to be connected to the metal part of the light bulb. I think the electricity worked by sending energy from the battery through the wires until it reached the light bulb and it lit up.