Fat weighs Heavy on the Brain (Article)

Hello readers, I am back! It has been so long posting! I was in Washington D.C. for the graduation trip and it was great. Okay, no more chatting. I will summarize a article I have read and it is about a relationship between obesity and the brain.

 So there are a lot of researches and experiments going on in the article. They have earlier studies that also helped them to come up with their results. So the earlier studies had result of people with heart disease and high blood pressure (which is related to obesity in many ways) have scored lower memory, and on thinking and reasoning tests. 
 There is a resent experiment with a 150 people who has obesity and healthy people. Then they found out, in general, people with obesity scored a lower scores. 1 out of 4 scored low enough to be considered as learning disabled or handicapped.
 There was another research in different place. This was to figure it out what it really affects on the brain functioning. Researchers used MRI to see people's inside brain. They figured it out that people with obesity has this white, fatty substances surrounds and protects the bundle that shuffles the information in the brain. They said it might be not a damage of the brain, but the slight disconnection between brain and brain that sends the signals through out the brain.

 So the article gave a conclusion that obesity is not a good thing for inside and outside of the body. With some of the few facts, obesity makes people hard to breathe, make people unhealthy, damages your brain especially for paying attention and learning new things.
 So people, if you love eating and can not give up foods, please exercise. There is no single bad thing by exercising but bunch of advantages.  

This is the link for the article: Fat Weighs Heavy on the Brain

wave

Long time no post! Well, I was in a spring break last week and had no assignment during the break, which was great great great.

I came back with a new and important topic "wave". This is quite important part that you will never miss during the science class.
To the main idea, what do you think when I say wave? Ocean?  Dancing? Light? Sound? Microwave? Are you thinking why I wrote light, sound and microwave? well, I will explain it to you.
What is wave? In the subject science, wave is a rhythmic disturbances that carry energy without carrying matter. It is confusing, I know. So basically, imagine ocean and that wave you are thinking can be anywhere like water, air, ground, and outer space. You need to know that waves can use median(the matter like air, water) but doesn't shift together, in the case it uses median. But why is wave happening? It is for transferring energy. If there is a sound, the wave is a sound, the energy. If it is the light, light is an energy it's carrying.

 In a big range, there are two types of waves. One is mechanical wave and the other one is electomagnaic wave. To be honest, in my word, mechanical wave is the regular wave and electromagnatic wave is the not regular wave. It is not, but it is easier to me to think that way. So...

Transverse Wave (above)

Mechanical wave is the wave that uses median( the matter it is used for transferring energy, ex- air water)
But electromagnatic wave is a wave that does transferr energy WITHOUT median.
For example, light is one. Did you ever wonder how the light comes in across the space which does not contain oxygen? Well, as I said, it is because you don't need median. Like light, radio, x-ray, ultraviolet and infarared waves.

There are 2 types of waves inside mechanical wave. It is transverse wave and compressional wave. Transverse wave is a wave that moves up and down but that has energy going direction of 90degrees of the way the wave moves. For example, there is light
Compressional wave is when wave moves back and forth instead of up and down. The direction energy move is same way of the wave.

                                                        Compressional Wave (above)

Okay, now I will tell you how to make sound waves. I mean, how you make sounds. Sounds occur by the objects' vibration. Like guitar for example, when you hit the string, the string vibrates and make sound. Air takes the sound in compressional wave way, and that vibrates your eardrum and then canal, and send it to your brain in a process like this.

Lastly, I will tell you about the wave. 
Crest- Crest is the highest point of the transverse wave.
trough- Trough is the lowest point of the transverse wave.
Amplitude- Amplitude is the distance between the middle of wave and the crest or trough.
Wavelength- Wavelength=1/frequency. It is the distance between crest to crest or trough to trough
frequency- Is the amount it vibrates in a second. Unit is H. It shows the pitch of the sound.


Done with my post today! Thank you for reading and I hope you understood well. Than I'll see you in a week~

Newton's Three Laws of Motion

Hello people, today is quite a clearing information blog of the previous things that I was talking about the Motions. So let's start.

The first law is basically law of inertia. What is inertia? I will give you an example.If you are in the car and when the your mom steps the break, you are body will go forward instead of sticking on the seat. This is the example of inertia. Also on the train. When the train departures, your body moves backward. And when the train stops, you move forward. These are because of inertia. You body tends to stay still  when it departures and tends to go forward when it stops.

 

Next I'll talk about the second law. Newton's second law is F=ma. So mass is kg, the original weight. Do you want to know the difference between mass and weight? Look up my previous blog. So lets say the mass of the box is 10kg and the acceleration is 5mph. So the force added there is 50N because it is 5*10. Well, this is basically everything about the second law.
Lastly, let me talk about the Newton's third law. This takes the motion's action and reaction. This means.. I'll give you an example. Lets say rocket wants to fly up in the sky. To fly, you will see the force working against the ground. So the way is upward and the force added is towards the ground. So for something to move itself, there must be the third law working.

 

 



Yay I am done. See you next week!

Gravity

Hey guys! I'm here. Today, I brought a new topic. It is gravity I am going to talk about it. Do you know what gravity is? Actually, this is really a important thing through out your life. You know what? You are actually depending on gravity right now, sitting wherever you are at. HEHE

So~ What is gravity?
Gravity is the natural force of attraction exerted by a celestial body, such as Earth, upon objects at or near its surface, tending to draw them toward the center of the body.As it is in the definition, the common example of the gravity is the person standing on the Earth. Earth pulls everything towards to the center and this force is called gravity. Did you ever heard about Galileo? You will hear someday in the future,,
Well, we have a lot of theories to talk about him. The one thing I am going to talk about is the thing about the gravity. You might have heard about the leaning Tower of Pisa, right? Galileo had an experiment on the top of the tower. He dropped two objects that has a different mass and saw that both objects reached the ground at the same time. This had a big affect on the whole world and this gave a result that if the object reaches the highest velocity of an object and then fall, the time of the both objects does reach the ground at the same time.

After Galileo made this theory, Isaac Newton was born which is creepy at the same time..
You know what Newton did? Well, he made a three laws of motion (the first law is at my previous blog~) and then he found out the "Gravity". The time apple had fallen on the Newton had made a question about the "Force" something that pulls all the objects downward. And he had studied and then he discovered about the universal gravitation.

This tells that all the universe works by the gravity. By the way, this is a huge discover.
To give some examples of the universal gravitation, lets talk about sun. Sun is having a huge mass that it has more "power(in my word)" that can pull the other planets stronger than it selves. But I know that you are thinking that 'why are the planets not going towards the sun?' Well, that is because each of the planets also have a force that tends to go outward. But since the distance of the sun is far, the forces are equal. That makes the planets to not get far and not get closed.

Okay. So gravity depends on two facts: Mass and distance. I can tell you this all by the Sun and the Earth. I told you up there that since the sun is far away, the force that is pulling the Earth is weak, right? And I also told you that the reason sun has more gravitational force than any other planet is because sun has the huge mass. Solved it!
There are people who are confused with the mass and weight. I will tell you the difference. The mass is the object that takes up the space. How about weight? Weight is the amount of gravity that needs to be pulled.  Lets say the mass of the human is 90 kg. In the earth, it is also 90 kg. This is the mass. Then how about weight? The person will have 882N in the Earth earth because Weight= 9.8 mass. So if this person's weight is 882N, it will be 147N in the moon because the weight in the moon is 1/6 of the earth. So did you got it??
So this is all about my blog for today. I have specific information about Isaac Newton and the first law of the motion in the previous blogs, so check it out! Today, I got a definition of the gravity in dictionary.com and that the rest of the information, I got it from my head.
So see you next week! And thank you.

Force

Hello people! I am back now. Long time no post, right? Well, I am here and I am going to talk about "Force" today. Yay! Please read to the end even it's bored.So what is force? Force is a push or pull  upon an object resulting from object's interaction.
You know when you play golf, golf club pushes the golf ball forward and it makes it fly. That is pushing used by force. When you type something on the keyboard, that is pushing even though it need small amount of force. And pushing your friend is also putting force in to it (Pushing friend isn't cool, so never do it).


Newton
Do you know what N stands for? It is Newton. This is the unit of the force. As what it is called, Sir Issac Newton had discovered it and that is why it is N.  Well, I must tell you how to get the force (I mean in equation). N(force)= mass*acceleration. For example, if there is 5kg of box and the object is moving by 2m/s^2, the force person is pushing the box will be 10N because 5*2=10. Easy right?


Now let's talk about thrust. So, thrust is force that can be proved by Newton's second and third law. This is force of reaction. For example, say you want to jump. You will try to go upward. You body is flying upward, right? But your feet will press the ground to have a process of jumping. This is called Thrust. You push downward to jump. Got it?


Net Force
Now what is Net Force?(look at the image)
Net force is the force added together. For example, if I am pushing the box with 5N and other person help you out and push with the force with 10N, the net force will be 15N. You get it now? But if somebody push against that person with same force above, the box will go backward 5N because it is 5-10.




Next balanced and unbalanced force. This one is really simple. As the word says, it is the force balanced and unbalanced. I will give you examples for each forces. If there is two people pushing an object against each other with same force, that is balanced force. The force is balanced. When there are people pushing against with different force, that is unbalanced. You know if this happens, one side will get pushed.
centripetal force

Now lastly!!! I will talk about centripetal force. Many people get confused with centrifugal force and centripetal force. It is important to know the difference. Both force occurs at the round place like circle. Centripetal force is a force that tends to go round. For example, lets say you have a heavy thing like marble on the edge of the thread. You hold the tope of the thread and put marble on the bottom side. Then you spin. The marble will go round, round and round. You will also realize it when you hold you had still, the marble will keep spin. This force that tends to spin is called centripetal force. Then, centrifugal force now. Before this, you know this that everything tends to go forward right? With the same material, when you spin and then instead of stopping you let it go, it will fly away going strait. By this, you can say that centripetal and centrifugal force is always 90 degrees.

I got couple informations at my science textbook and mostly, I knew stuff. Haha.
 Okay this is end of force today! Each paragraph had different explaination and this will be easier to read. I hope you learned alot today. Thank you for reading.

Acceleration

Hello!

Today, I am going to talk about acceleration. The one I did previously is motion, which is quite similar with this today's topic.
What is acceleration? Acceleration is the change in velocity divided by the time it takes for the change to occur. This is the definition.

There are three ways of acceleration. It is speeding up, speeding down and changing direction.
Let's start talking about those.
Speeding up means speeding up. It is the other word for accelerating. Accelerating happens only when the motion and the velocity are in same direction. If the ball rolls to the right side and tend to go right side, acceleration will happen. Example of down hill is one of the same direction. You roll the ball down hill and it will accelerate as it goes down. This is also called positive acceleration.
Next, it is slowing down, also deceleration. Opposing speeding up, it happens when motion and velocity is going on the opposite direction. Up hill is another example. When you roll up the hill, the motion is forward. but because of the gravity, it tends to go backward. So motion and velocity is opposite way. This is also called negative acceleration.
 There is a way to calculate acceleration. It is
(Final Speed-Initial Speed) / time. To think easier, I will give you an example. Lets say that you went down the slide. The starting speed (initial speed) will be 0m per seconds .10 seconds later, the speed was 20m per seconds. So now you just need to put the numbers in.
(20m per second-0m per second) /10second. This leaves 2m per s^2.
Acceleration has s^2 always.
Next, there is a graph of acceleration. The bottom line is time, and on the side is meter. When graph rises, it means it has acceleration. But when the slope is downward, it means it is slowing down. When the graph is constant, with no slope, means the speed is constant, nor slowing down or slowing up. There is one method my science tought us about the graph. When the graph has a smily face, it means it is positive graph, and when it is having opposite smiling graph form, it means negative acceleration. This really makes it easy to memorize.

negative graph over here, red line is the negative graph that shows it slows down from 8th seconds.

Motion

Hello everyone, long time no post! I came back with a topic "Motion". I know that you all have heard of it or even know what it is. For the people who don't know, I will talk about it today. As I start as usual, what is motion?

Motion is any movement or change in position or time. For example of motion of your body, standing up and down, blood circulation, and stomach going up and down while you are breathing are the ones. There are a lot more examples, but I am not listing thousands of them here.

 I have many things to talk about.


First, what is relative motion?'

Relative motion is when an object changes position moving relative to a reference point. So let me give you an example. When I am on a train and let’s say the train is moving forward. Outside on the window, you will feel everything out there going backward instead of you on the train, going forward. On your reference point, it will be outside that goes backward and you staying still.
relative motion
 Next thing you will learn is distance and displacement. I bet you know what distance is but not displacement, but the people who don’t know what it is…
Distance is the measurement of the path you take to get to the finish. There a lot of units to show the distance, for instance, there are mm, cm, m, km, inch, feet, and yard. Many countries use mm, cm, m, km as a main units, but in U.S we use all, which kind of drives me crazy. Just to make sure you know, there are much more units used in the distance. If I give you an example, let’s say there is 100 m race in school. You know what? As it says, the distance is 100 m. Isn't it so simple?
 
d is the displacement between (x1,y1) and (x2,y2)
Since it is easy, I will explain what displacement is now. Displacement actually includes the distance, and it is the distance between the starting and ending points and the direction in which you travel. Let’s say you are late for something. You want to go faster than it usually takes, right? Maybe you can go shortcut without going all the way around something between you and the place you want to go. The shortcut is the displacement in an easy word to displacement. You go directly to the ending point. What you need to know additionally is that displacement can be 0 even though distance is not 0. So, when you come back to the spot where you had went off, I mean you go round and come back to starting line, displacement is 0.

 

speed
Next, we are going to learn about speed. I know that you know speed because it appears a lot of time our lives. It comes out on the computer game, on the road “speed limit” or in science and in math a lot, everywhere. Do you know the definition of the speed? Okay,  the speed is the distance an object travels in a unit of time. You can calculate the speed too. It is distance over time. This might confuse you, so I will explain it to you. Let’s say the car is moving 120miles in 2 hours, and let's say you want to figure out the speed of the car.Since the equation of the speed is distance/time, you just need to stick the numbers in, and it will be 120/2 which is 60. So the car is moving 60 miles per hour which is the speed of the car.
 Do you know the difference between velocity and speed? Many people think it is same. Well, that is what I thought too. You know what? They are different. Velocity is including the direction of the object, but speed does not. To give you the example, let's think that the car is moving toward NE and move toward south. In this case, you need to ask the velocity, not speed. That is the right word to say. But when the car goes in one way not thinking the direction it's going, you must say "Speed of the car" instead of velocity of the car.
 velocity
Next lets talk about type of speeds. There is instantaneous speed and average speed. They are both part of speed. For the example, the bike is going one place to another place. Let's say that the bike went 2 km in 100 seconds. The average speed will be the average speed of the bike from the distance first to the end, 2 km. The speed will be 2000/100 which is 20 m per second. But instantaneous speed is the a little different. This is the speed at the instant time. Bike won't go 20 m per second exactly at every moment. The person could have slowed down and speed up later. So instantaneous speed can be the speed of the specific moment also the speed from 5 m to 15 m can be instantaneous speed which can be 15 m per second.


These are the ones I wanted to explain to you today. I hope you understood even though I have a bad explanations. Thank you!