Today i am going to talk about the wonders of boiling liquids. Boiling is used in many ways. Boiling is most commonly used in heating food like macaroni but there are many other uses. If someone is stranded in amn isolated location, they need to boil any water they find because the germs, parasites, slat, etc can make you sick and even kill you on occasion. Heat kills the germs and anything in the water or liquid. Drinking unsoiled water in the water is just as dangerous as eating raw meat which you need to cook. Boiling a substance does not always require great heat, some objects can boil at a much cooler temperature because the pressure is different around the substance. Boiling something will make it become a gas. Letting a substance evaporate takes a lot longer than boiling. Ocean water is not drinkable because of the parasites and salt but when you boil it, all the parasites.will die off that are in the water as well as the salt allowing you to drink. If one did not purify the water and they could get sick. Boiling your food is a very easy task but we don't notice how helpful and easy it is to use. Preparing food would be a lot harder if boiling did not happen within the household. Think about this, you could not eat macaroni and cheese if you couldn't boil. Boiling is a life saver in some situations or an easy cooking method but without it a lot of things would be harder.

http://www.chem.purdue.edu/gchelp/liquids/boil.html

Today I am going to be talking about ultrasound. Ultra sound is a sound wave imaging device. Ultrasound is far too high pitched for us to hear and it goes through the skin and bounces around to paint an image. Ultrasound is not always used for monitoring an unborn baby. Scientists did multiple tests on ultrasound and found that it improves brain senses and nerves. Doctors put an ultrasound next to a persons head to contact the brain and it decreased the waves and that did not surprise the doctors that the brain waves were weaker and shorter but what surprised them was crazy. They did multiple tests on a persons senses and made the tests harder and harder. Some of the tests included poking and touching and one was using multiple wind gusts and too see if they could count all of the wind blasts. The doctors found that those with the ultrasound affect did better on the test than the others. Ultrasound can also be used for viewing many injuries and medical problems. Some medical problems that require ultrasound are knee injuries and brain problems. The sound from the ultrasound  bounces within the skin off of every surface and paints an image on a screen. Doctors use this to diagnose many types of injuries, and monitor a baby. Ultrasound is how one can tell what the gender of the baby is and where it is positioned.

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Web link: http://news.yahoo.com/ultrasound-may-boost-brain-performance-180226105.html

ADHD

ADHD, this is a big topic to me because I have this condition and I have no treatment for it. ADHD is  a chemical imbalance in the brain and this causes multiple symptoms of not being able to focus, hyperactivity, and in some cases not being able to get along with others. I am the only one I know who has ADHD and it is a lot different from normal people. There are a few types of ADHD and ADD is one of them. ADD is like ADHD but you don't have the hyperactivity and the attitude issues. Many people use medicines to help fix the imbalance to focus better and remove the symptoms, but for many patients of ADHD, like me the medicines have negative affects such as making it worse and making me sick. Many people choose to cope with ADHD and few people like me have found a way to fight it off. ADD is a more common form of ADHD and most people use medicine to fix it and it goes away usually but ADHD usually stays present for life or most of life. From a person with it, I often find myself paying close attention and without noticing whatever I'm listening to gets me thinking about something else and that gets me going on something else and it doesn't stop until you notice it and snap out of it. By the time I snap out of my daydream, I miss half of the lesson, conversation, or song. ADHD and it's variants are the most common disorders diagnosed in children. With ADHD it is really hard to follow through with instructions and it is really hard to study because with ADHD comes the disability to remember things very well. ADHD often appears in children and sometimes continues into adulthood. Anyone who knows me knows that I can't sit still, listen very well, or stick to one task.

(Here are two brains, one with ADHD and one without. If you look at the two grooves that are bright red and yellow/orange the normal brain to the left is carrying out normally. But the ADHD brain is not like the normal brain and has darker spots from the imbalance in this two orange spots.)