Archive of ‘Science 8’ category

Brain Myths

The brain myth I decided to look at is “Listening to Classical music makes you smarter”. No one in this world actually understands the human brain entirely. There are many myths that people tell about the brain. The myth I chose is about how music affects your brain and affects the intelligence of people.

This myth came up at 1950 when an ear, nose and throat doctor, Albert Tomatis started claiming that music produced by Mozart actually helped people with speech and auditory disorders. As a proof, in the 1990s, there was a study which showed that students who listened to 10 minutes of Mozart sonata had an increase of 8 points in their IQ test. However, right now there isn’t a specific scientific reason to show that classical music makes us get smarter.

Source: This is your brain on music- The science of human obsession

Source: This is your brain on music- The science of human obsession

The main parts of the brain stimulated by music are the auditory cortex, cerebrum, cerebellum, and the limbic system. In the auditory cortex, the brain cells are organized by sound frequencies, which some responding to high and the others responding to low frequencies. The auditory cortex analyzes the volume, pitch, speed, melody and rhythm of the music. The cerebrum is the part that remembers lyrics and sounds of music. It also helps visualize the music. The cerebellum helps creating smooth, flowing and integrated movements of music. It affects rhythmic movement in the body when responding to music. Finally, the limbic system is where emotions are controlled, and this area affects the emotion we have by listening to music.

The effect classical music has to the brain is:

  • Foster brain development in children

In Dr. Gordon Shaw’s study, who is a physicist, found that infants who listened to classical music written by Mozart and then studied piano, they scored higher than others in a math test. In different studies, it says that listening to classical music can help children develop spatial and verbal skills

  • Exert a calming effect

In the article “Journal of Clinical Nursing” in 2008, there was a study that told listening to classical music for 30 minutes reduced stress, anxiety and depression for a pregnant woman. Dr. Kevin Labar of Duke University states told that this effect comes when the brain releases dopamine.

By looking at the effects classical music has to the brain, we can say that listening to classical music makes us smarter, however, we also can say that listening to classical music helps us to focus more which leads us to being able to score higher grades in a test.

The existence of this myth matters in social, and economic ways. It matters in economic ways since parents of babies are buying classical music CDs so that their children will become smarter by believing this myth. If this myth isn’t true, it means that the parents are actually wasting money for hoping that their children will get smart. Especially these days, products with the name of “Classical music for Babies” are sold a lot.

Cooper, Belle Beth. “8 Surprising Ways Music Affects the Brain.” Buffer Social. Buffer, 20 Nov. 2013. Web. 04 May 2015.”Educators.”

“Educators.” Temporal Dynamics of Learning Center An NSF Science of Learning Center. Regents of the University of California, n.d. Web. 29 Apr. 2015.

Kassem, Noreen. “What Parts of the Brain Are Stimulated by Music?”LIVESTRONG.COM. LIVESTRONG.COM, 11 Mar. 2014. Web. 08 May 2015.

“Listening to Classical Music Makes You Smarter.” BrainFacts.org. Society for Neuroscience, n.d. Web. 30 Apr. 2015.

Programs, Online PHD. “Ten Studied Effects of Classical Music on the Brain.”DrJoe Today Drjoesdiyhealths Blog RSS. Drjoe.net.au#sthash.opwpa8Ig.dpuf, 24 Sept. 2012. Web. 08 May 2015.

 

Graph Matching

Horizontal Line graph

This is the graph which we needed to make the line horizontal. To achieve this, we needed to stay still.

Screen Shot 2015-02-06 at 2.52.27 PM

This is the graph that has a line that decreases smoothly. To match this graph, we had to walk forward at a constant speed.

 

Screen Shot 2015-02-06 at 2.53.05 PM

This is the graph that increases smoothly. To match this graph, we had to walk backwards in a constant speed.

 

Screen Shot 2015-02-06 at 2.54.06 PM

This is the zig zag graph. To make this graph, we walked both backwards and forwards in a random pace.

Screen Shot 2015-02-06 at 3.05.49 PM

To match this graph, first we had to find the position that matches the graph which are the very first position, and the position when the graph increases, and then the position when the graph decreases. Then we counted the seconds and moved to the positions we found at the correct time.

 

Screen Shot 2015-02-09 at 3.32.53 PM

The graph was hard to match so it isn’t matched well. However, to match this graph, when the line is in the position 0 for the y-axis, we had to stop. To make the first area that decreases, we had to move forward at a speed that is not too fast and not too slow. Then to make the second area which is when the graph moves up we had to move back at a speed that is faster than the previous speed. Then, we had to move forward fastly and go back as fast as possible and stop for a few seconds. Finally, we had to move backwards as fast as possible and come back.

We couldn’t do the graph E. However, the graph looks like this:

Velocity vs. Time (01E)

 

To match this graph, first you have to walk backward. First you should walk slowly and gradually increase the speed. As you get to the end of the increasing line, you should keep on walking at the same constant speed which should be the fastest speed. Then you go forward and keep walking but adjust the speed so that it will become a tiny bit slower. Then for the last second or so, stand still.

 

 

 

Volunteers preparing for life on Mars

The three words are aeronautics, barren, and compost. Aeronautics is the technology of flights. Barren is a land with no plantation. Compost is a mixture of corrupted organic matter that contains nutrients to grow plants.

The main idea of this article is about six people spending eight months in a special habitat that is similar to Mars.

NASA is going to send astronauts to Mars in the 2030s as the earliest and are going to have missions that take more than two years. To prepare for this, they need to know how people will react when living a long time in an isolated place with a small group. The crew will live in a two-story domed shape building and communicate by email which will have a 20 minute delay for receiving. This is because it will take 20 minutes to receive an e-mail in Mars. When the crew need to go outside of the dome, they need to wear spacesuits.

By having this experiment, we can see if it is possible that human can go to Mars for a long period of time. This experiment isn’t actually held at Mars, so if the crew can’t live in this special habitat, it is impossible for humans to live in Mars for two years. Also, in this experiment there will be an emergency phone, but if an emergency occur in Mars, they won’t be able to contact Earth quickly because all communication between Mars and Earth will be going through satellites. In maximum, it can take 22 minutes for the information to reach.

This experiment beneficial because NASA will get the result of the possibility of people being able to live in Mars for a long time. If the crew was able to live the eight months, people will be able to go to Mars and do missions that aren’t possible currently to earn many kinds of data. From these datas, scientists can invent things that are impossible to make now or conceive something they didn’t think about in the past.

MLAs:

“Aeronautics.” Dictionary.com. Dictionary.com, n.d. Web. 08 Dec. 2014.

“Barren.” Dictionary.com. Dictionary.com, n.d. Web. 08 Dec. 2014.

“Compost.” Merriam-Webster. Merriam-Webster, n.d. Web. 08 Dec. 2014.

Conrod, Monique. “Volunteers Preparing For Life On Mars.” Teaching Kids News. Teaching Kids News, 28 Oct. 2014. Web. 08 Dec. 2014.

“How Does the Mars Base Communicate with Earth? – Technology – Mars One.” Mars One. Mars One, n.d. Web. 08 Dec. 2014.

 

Metals in News

Scientific Vocabulary:

Effluents- Gas or water outflowing from a body of water; Decontamination- Removing contaminating substances like poisonous gas and radioactive metal; Contaminant- Something that makes a substance or a place unusable.

This articles is about how scientists found out that onions and garlics can be used to clean heavy metals in contaminant materials.

The science used in this article is that onions and garlics can be used to remove toxic elements like arsenic, cadmium, iron, lead etc… from contaminant materials. The researchers from the GGS Indraprastha University studied about the influence of pH, contact time, concentration, and the temperature of different types of metals that are present on the cleanup process. As a result, they found out that the efficiency of the cleanup process is largely dependent on the pH at the temperature at 50°celsius. During the process, the team was able to extract more than 10 milligrams of metals per gram of Allium material from a test solution which contained 5 grams per liter of mixed metal ion solution. This amounted to recovery efficiency for more than 70 percent. Using the nitric acid and the biomass reused, the absorbed metals were released into a collecting vessel.

Economically, this can affect the world because before knowing this, heavy metals in contaminant materials (Eg, dioxin, sulfur oxide, and nitrogen oxide) couldn’t be cleaned in an easy way. For example, machines may be used and it costed a lot. However, by knowing that onions and garlics can clean heavy metals in contaminant materials, it won’t take money and we can save time for removing toxic elements. Heavy metals can be a problem because it can cause pollution and it can be poisonous and if we remove them we can prevent pollution happening and also worrying about poisonous metals.

I think this science is beneficial because we can get onions and garlics easily in shops and we can use the waste we got from eating them or using it for cooking. This can make a benefit for us by saving money and also getting the materials easily so that we can research more and find new answers for the questions we have right now more productively.

“Contaminant.” Merriam-Webster. Merriam-Webster, n.d. Web. 29 Sept. 2014.
“Decontamination.” Wikipedia. Wikimedia Foundation, 27 Sept. 2014. Web. 29 Sept. 2014.
“Effluent.” Wikipedia. Wikimedia Foundation, 24 Aug. 2014. Web. 29 Sept. 2014.
“Onion Waste Cleans Up Heavy Metals, Study.” Asian Scientist Magazine Science Technology and Medicine News Updates From Asia RSS. Inderscience Publishers, 12 Dec. 2012. Web. 22 Sept. 2014.

 

Metal poster Reflection

The three things I would focus on next time is:

  • To read the question more and site the sources correctly.

I didn’t read the document correctly so I had the MLA in a different place. If I read the document more correctly, I think I would have a better grade and can improve my work. Also, I didn’t know that I needed to site the MLA in alphabetical order too.

  • Read the TSC.

I didn’t read the TSC so I didn’t really know what to do. By reading the TSC I would know what to do and by reading it before the due date, I can make my work better and check it over again.

  • Have more detail in my work.

I didn’t really use scientific vocabulary even though I learned it. By using the vocabulary, it would be more easier to tell what I want to say to the reader/teacher. It would also be useful to explain the information I researched.