The Exploding Lunch Bag

This week’s blog post will be another short experiment that anyone can do at home! This week the experiment will be called the exploding lunch bag. Here’s what you’ll need:

• Zip sandwich bag – zip-lock freezer bags work the best
• Baking soda
• Warm water
• Vinegar
• Measuring cup
• Tissue

Steps:
1. Go outside or to the kitchen sink.
2. Put ¼ cup warm water into the sandwich bag.
3. Add ½ cup of vinegar to the water in the sandwich bag.
4. Put 3 teaspoons of baking soda in the tissue then fold it up.
5. Work fast now- zip the sandwich bag close but leave a corner open, enough to fit the tissue full of baking soda in.
6. Slip the tissue in and step back
7. Watch the bag slowly expand then explode!

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This cool experiment is fueled by the simple chemical reaction between the vinegar and the baking soda. It releases CO2, and once the bag no longer holds that capacity for the CO2, the bag then explodes. Time to scare your friends in the lunch rooms!

Works Cited:
Pflugfelder, Bob. “The Exploding Lunch Bag.” Science Bob. N.p., n.d. Web. 22 Oct. 2013.

The Periodic Table

This week I decided to put up a post about the elements of chemistry. We’ve all seen it. The massive chart with a bunch of random number and letter squeezed together in tight blocks. It’s the periodic table, which is made up of 103 elements.

periodic_table_of_elements

Many of these blocks include elements that a majority of us are familiar with, such elements as gold, silver, copper, oxygen and many more. The basic way to read these blocks individually can be pretty overwhelming. There is so much to an element that can be fit in one tiny block, so it’s hard to mix up numbers. For example, Nitrogen:

N-periodic-table-de

To begin, Nitrogen can be identified as the seventh element on the table. And the way an elements number is established on the chart is based on the atomic number. In this case, nitrogen has 7 protons and 7 electrons whereas its neighbor, oxygen, has 8 protons and 8 electrons, making oxygen follow after nitrogen. You can find the number it is by looking at the top left hand corner of the block. Then centered, written is the abbreviation for the element in bold letters. And then finally at the bottom of the block is the atomic mass, just telling us how much this element weighs.

Even though some elements are included on the chart, some don’t exist in or on our planet earth. This table based on the elements known to mankind, however, there are a few at the bottom that a father of chemistry, Dimitri Medeleev, predicted would exist. These elements were referred to as ekaboron(Eb), ekaaluminium (Ea), ekamanganese (Em) and ekasilicon (Es). He left holes in the chart where he guessed these unknown elements would lie. Those elements are actually the separate chart beneath the table. The top line in this chart are know as the Lanthanides and the bottom row is referred to as Actinides. These are known as the transition metals and have very low orbitals which is why they are positioned cast away from the other elements. Mendeleev knew these had to exist based on atomic make, however were not discovered until later.

Another way that this chart is also organized is by the different states that these elements can be found in. From the left side of the table to the right, it starts with halogens and slowly turns into the alkali metals. Finally, the last column on the right is referred to as the noble gases. These gases are known to be Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xn) and radon (Rn). These different states that elements can be found in are sectioned off by columns throughout the chart. Separated vertically as well and numerically are the different orbitals thats the protons and electrons have around the nucleus. It’s rather hard to explain the nature of the numbering in conjunction with the states of the elements so here’s a picture to better understand:

maybe

Thats the basic breakdown to help people understand the periodic table better. It’s really not as confusing as some make it out to be.

The Water Cycle

This post this week will be a little insight on the water cycle of our earth. This topic is very plain and simple and extremely easy to follow!

The water cycle is a never ending flow, so a good place to being is when it rains. When it is raining, the water is falling to the earth, or precipitating, and the water is then absorbed into the earth’s crust.

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The second step is the water slowly moving through the earth’s crust, following the topography (the terrain) of the crust, and flows out eventually to the ocean.

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The final step in the cycle is when the water evaporates in the atmosphere and is slowly formed in to clouds. This is referred to as condensation. Once the water droplets are combined too much where they’re too heavy to be held by the updraft of the cloud, it then begins to rain.

precipitation_fog

This is a very basic idea that actually has many branches when it comes to where water travels to throughout the earth. This picture is to represent all other happenings of the water cycle.

water-cycle

Depression…

This post is going to be more personal this week. The topic I want to discuss is depression. Not many are aware but this mental state plagues millions of people across the world, and many are unaware of it. People who experience, or for a better word, suffer, from depression understand the meaning of no hope. A lot of symptoms of depression can include the following:
• Abnormal sleep patterns (too much or not enough sleep)
• Disinterest in most daily activities
• Memory loss
• Many more

Symptoms can vary depending on the severity and type of depression. This is all caused by an abnormal imbalance in your brain causing low levels of dopamine or serotonin.

Depression hurts. And I’m not trying to sound like a Cymbalta commercial for antidepressants. It’s an illness that can physically harm you. Reasons as to why depression begins vary as well. It is an illness that is hard to crack, and is very dependent on all of the circumstances that one faces to cause depression.

Growing up, I faced a lot of situations a young girl shouldn’t have had to face, and extreme poverty wasn’t the least on the list. Once I finally graduated into high school, it all began to hit me. I was tired every day and my out of school activities no longer pleased me so I dropped out of dancing, singing, acting and softball. My grades slipped and I dropped from my high honors classes to academic even though I was still failing those, too. By my junior year, I spun out and almost became a high school dropout. My numbers of worries increased as well as the number of scars on my arm, and then I was committed to Western Psychiatric in Oakland after my first attempt to commit suicide. There I was treated for clinical depression stemming from a traumatic childhood.

I used this to excuse myself and I abused my medication as a way to cope. After a small down fall again senior year, I realized this is no way to live. People who suffer from this try to find a comfort in their medications and the stupid therapy that the certain quacks say are “designed to help the coping method”. They’re completely wrong. There is no cure for depression. Only to ease the pain that’s created in your mind. Medications help greatly for people that have such a chemical deficiency that they can’t function without it. However, the remedy that many depressives, such like me is the answer that lies within. It sounds deep and metaphorical but it’s actually all within you. And find the answer in you when you’re trying to solve your troubles. The question that many depressives stutter and stammer over is “What do you want?” They fail to come to understand what they really want in their lives. And you, yourself, are the main controller of your own life. I always enjoyed pleasing people, but I never attended to my own needs, and I was at a loss when this question stumped me. But with true time to think about life and what I want, it came to me. And it definitely can come to any depressive who really sits down and thinks about what they would like in their lives or what they want to do. The answer is not in medication or faulty therapy. It’s you.

Build Your Own Hover Craft

Here’s a cool experiment that adopts the futuristic idea of a hover craft and makes it so it’s easy to manipulate at home! It’s a simple construction that all ages can enjoy. Here’s what you’ll need:
• 9” balloon
• Pin
• Tape
• Hot Glue
• Pop-top cap from a water bottle
• CD/DVD

Steps:
1. Tape the center hole of the CD/DVD. Then carefully poke 6 or so holes using the pin through the tape.
2. Carefully hot glue the bottom of the pop-top cap onto the center of the CD/DVD over the poked holes. Make sure it’s sealed tight so no air will be able to escape. Also, make sure the pop top cap is closed.
3. Blow up the balloon and pinch it so you can pull it over the top of the pop-top cap.
4. Pull the cap up and watch your creation hover!

This experiment mocks the idea of a hover craft when in reality the idea becoming real is right around the bend. As mentioned in my last post, the technology is rapidly increasing. And far-fetched ideas are becoming reality every day. But ideas all begin somewhere! And this is hover craft experiment is the beginning of the new age technology.
balloon
Happy hovering!

Review of the post: “Children and Technology”

After reading this blog post I felt extremely nostalgic. Granted I am still only seventeen, I did abide by certain rules that most technology-free kids followed. My mother always let me stay out until sunset. By the time it was twilight out, she would order me to come home. And she wouldn’t even have to leave the house, she have to shout out the door because I’d be over in the neighbor’s yard playing. Times were much simpler as opposed to now due to the technologic advances. I know that kids younger than me are going to be more far advanced than me when it comes to new-age technology further on in years. I have a nine year old brother that has a DS, Wii, touchscreen computer and a t.v. all at his fingertips in his room. However, this fact didn’t really impact me until Danielle stated that her youngest asked her what buttons were. I feel like Danielle really made a strong point in this post. It reveals how fast the technology is improving through the years and how big the gaps are going to be between these generations. The real question is what will really happen once these gaps are fully opened? Will society drift apart or will we be more in-tune with one another? This links back to the article read in my English 100 class, about the technologic immigrants and the natives. Kids that are in grade school now are the natives when it comes to understanding technology. Their brains are being freshly wired to understand how computers and certain devices work, where on the other hand, people like Danielle and I are used to only a color t.v., a ball and the outside. We had harder times understanding certain technology because we aren’t born to it like kids these days. Then this also sparks more questions like, if kids these days don’t even know what buttons are, then what new technology is going to come out next so that they can’t remember what a touchscreen is? Further advancements in technology have led to fascinations such as cloning. The next big fantasy that is yet to become reality is the tube transport Futurama. These tubes will be designed to shoot up to speeds at 400 mph and be able to travel from New York to L.A. in 45 minutes or from Beijing to New York in 2 hours. With no doubt would this be able to become a reality seeing as cloning came first. The larger picture is, however, how are kids going to be acting in the upcoming ages of new technology? With these tubes, young children won’t be able to experience a road trip first hand. They won’t be able to do all the sight-seeing on the way to the destination. All the pit stop along the way and random hotel nights is the first half to an adventure. And with these tubes, kids are deprived of the sense of the journey and exploring beyond their city limits when traveling. All these certain aspects of a child make up childhood, and kids are certainly being deprived of their childhood in that sense. Technology is growing too fast.

Physics: At a Glance

Many people fear the word physics. The idea that is formed is long equations just to describe the motion of a ball being thrown in the air. And well, that’s true. But it’s not as convoluted as many believe it to be. For the most part, physics can be summed up by three rules. Most have heard of these rules, which are also referred to as Newton’s Laws. These guidelines set up the very most basic rules for simple motion. Newton firstly began to think about the laws of gravity and motion when he was sitting under an apple tree, and watched an apple fall to the ground. Thus, the three laws were born.

newton

The first law is pretty easy to understand. Newton states; “An object in motion stays in motion, and an object at rest stays at rest.” So, disregarding the fact that we live on earth and our gravity acceleration is 9.8 m/s/s, and object in motion in space will stay in motion and an object at rest will stay at rest with no outside forces acting upon the object. Outside forces would include gravity along with friction. Galileo Galilei, one of the most famous fathers of science in the seventeenth century. He found that if a ball rolled from the top of one slope to the top of another one, the initial and final heights would not equal each other, but the final height would be less than the initial. Without these restricting conditions on objects, things would move constantly and forever.

A deciding factor in whether if an object is in motion would be its inertia. This is an object tendency to resist forces. The inertia can be calculated using the objects mass. However, it’s found that the larger the mass, the larger the inertia, thus meaning the bigger chance the object has at resisting outside forces. I feel inertia is the most vague topic when it comes to discussing physics. Hopefully this video will be able to give a better understanding.

The second law is a little bit trickier than the first. This law breaks down the motion of an object further than the first law. It states that F = ma, or mass multiplied by the acceleration is the net force that the object has. So if an object on earth weighed 250 kg, and the acceleration is 9.8 m/s/s, the net force of the object as it is falling to the ground will be 2450 N. The abbreviation for the measurement of the force is called newtons.

The last law not only includes the motion of an object but also the activity of two objects whenever they collide. Newton states in his third law that for every action, there is an equal and opposite reaction. The forces from the first object are equal to the forces on the second object and are also opposite of these forces. They always come in pairs. For the types of interactions that objects have with each other are called collisions and are measured by impulses.

Impulses are just forces that act over a period of time. This can be found by calculating the change in velocity and multiplying it by the mass.

People are afraid of physics because of the startling numbers, the unidentified characters from the Greek alphabet that are normally used in equations. But it can be broken down to steps and explanations that everyone can understand.

Works Cited:
Henderson, Tom. “Newton’s Laws – Table of Contents.” Newton’s Laws – Table of Contents. Compadre, Spring 2012. Web. 24 Sept. 2013.

“Newton’s Laws of Motion.” Wikipedia. Wikimedia Foundation, 09 Dec. 2013. Web. 24 Sept. 2013.