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A Day At the Playground!

10/31/2014

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This video was made by me and my partner, Lexi.  We were to make a slide show demonstrating the way different types of energy works.  We decided to have a dog in our story undergo the effects of many different types of energy.
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A Nuclear Power PLant in Beachwood?

10/23/2014

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A nuclear power plant is a place where a nuclear reactor is used as thermal power, and it makes steam, which is put through a steam turbine, which is connected to a generator that makes electricity.  There are nuclear power plants all over the world.  However, I wouldn't want a nuclear power plant to be built in Beachwood.  Nuclear power plants create a lot of radiation, which is very harmful toward people and their health.  I wouldn't want the people in Beachwood to have their health in danger because of a nuclear power plant.  Also, if there was an accident in the power plant and it exploded, so much radiation would be released and many people could die.  This actually happened in real life, when the Chernobyl Nuclear Power Plant in Ukraine had an accident, and part of  the plant exploded, causing massive amounts of radiation to be released.  I wouldn't want a nuclear power plant in Beachwood because of all of the catastrophic events that could take place and harm many people.
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The result of the Chernobyl disaster
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Mechanical Waves

10/17/2014

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The photo shown to the right is an example of a sound wave.  Sound waves can be longitudinal or transverse.  

In the environment, we can make echos, which is when sound waves bounce off surfaces and come back so we can hear them again.  If it is a louder echo, the wave will have a larger amplitude, and if the echo is softer the wave will have a smaller amplitude.  If the echo is more high pitched the wave will have a smaller wavelength and a higher frequency, but if the wave is more low pitched then it will have a larger wavelength and a lower frequency.

Also, fire alarms produce sounds when there is smoke around, and that affects the way we live our lives if there is a fire.   If the alarm is louder, the wave will have a higher amplitude, and if the alarm is softer, the wave will have a lower amplitude.  If the alarm is more high pitched, the wave will have a smaller wavelength and a higher frequency, and if the alarm is more low pitched, the wave will have a bigger wavelength and a lower frequency.

People can also listen to music, which is also created by sound waves.  If the music is louder, that means the wave has a higher amplitude, and if the music is softer, that means the wave has a lower amplitude.  The pitch of the music depends on the frequency of the wave.  If the music is more high pitched, that means the wave has a shorter wavelength and a higher frequency, and if the music is more low pitched, then the wave has a longer wavelength and a lower frequency.
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Acids and Bases affect our lives

10/2/2014

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Acids and bases can affect our lives in positive and negative ways.  These two types of solutions can do good or bad things to people and the environment.

Using products such as antiperspirants and deodorants involves the use of acids and bases.  People need to learn about antiperspirants and deodorant so they understand their use of acids or bases.  Antiperspirants help stop the production of sweat by sealing or clogging sweat glands while deodorants do not stop the production of sweat, but only stop the bacteria, which makes the odor less strong.  By understanding what these certain products do, it becomes more clear how acids and bases affect us.

Did you ever wonder how a pickle goes from being a cucumber to a pickle?  This process, again, includes the use of acid.  Cucumbers are put into a salty water called "brine", and the brine's acidity preserves the cucumber and gives it a salty taste. The water's acidity overcomes the harmful bacteria in the cucumber that would rot it if it wasn't saved somehow.  Even this every-day food depends on acid to be preserved, which shows what kind of part acids and bases take in our lives.

The quality of the environment can be changed by the way acids and bases take place in them.  It is important to know the pH scale so you know how acidic or basic substances are.  An important factor for living things is the acidity of the substance they are in.  For example, some grasses need a soil with a certain pH to grow correctly.  Also, the acidity of bodies of water need to be checked on so that the organisms living in the water don't die if the water is to acidic.  Many things in nature that we are familiar with can be changed by acids and bases.

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    Author

    I'm Athena and I'm 12 and a 7th grader.  I love dancing and playing piano.

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