Reason for the seasons

Reasons for the seasons!

How does the tilt of earths axis affect the light received by earth as it revolves around the sun? 

What causes the seasons???

Hypothesis: The reason there are different seasons because the earth rotates and there are different temperatures around the earth. 

1. If the Northern Hemisphere is winter, then on the southern part of the world it will be the most sunny and hot.The eastern and western parts will be a bit sunny as well. The are where the most concentrated light is at the north pole it almost 24 hour sunlight. 
2. During the summer and winter the equator is always getting some sort of light. The North pole on the other hand in summer it gets lots of sun but in the winter it doesn't get any sun at all. 
3. If the squares are getting longer i would infer that more heat will be able to go into one square unlike if it was shorter. 
4. The place where it is constantly coolest is the South pole because when we where doing the seasons lab you could see on the ball that the south pole was not getting a lot of light from the flash light. The warmest place is the equator or places close to it.
5. The time when the tooth picks shadow will be longest is when it is summer because the tooth pick is pointed towards the sun so it will have a longer and bigger shadow. In winter the tooth pick will be the shortest because the tooth pick is not really being recognized by the rays of the sun. 
6. Well if the sun is at some particular point where it is pointed to the sun. So that the sun can send its rays and then it will hit the earth straight on but then there is when the sun is not pointed at the sun and then the rays hit the earth but hit right off.

Analysis:

I think that my Hypothesis for this unit is correct and i think that we had a clear idea on what we where doing and how we did it. This lab taught me a lot about the earth and out planets how they move, how they interact with each other and how they all come together to build up space. 

Knowledge of waves

What do you know about waves now, then what you knew before?

• Now i know a lot more, because now i know more types of waves and how they work. Also how they move and how they effect in good ways and bad ways. Like irradiated waves, they can be bad because they can cause a lot of bad sicknesses. 
• Also there are X rays which i knew before because i broke my arm and then i saw my arm. Also i could see my brain.  
• The thing i most liked was the ultraviolet, because it was very interesting and it ad a lot of interesting facts to explain to me what it does and how it can help and not help. 
• I wouldnt change anything because i thought me and Mary did a very good job with the info and how we set it up. 

Food Radiation

Notes

• Food travels a long way to get to your plate. 
• Potatoes come from Maine and strawberries from Florida or Mexico. 
• Sometimes food makes people sick.
• Millions of Americans get sick every year from contaminated or spoiled food.
• A way to preventing you from getting sick is to treat your food by irradiation.
• Gamma rays are sent through fresh or frozen foods. 
• More then 40 countries dont allow food irradiation. 
• Radiation kills living cells. 
• It can destroy nutrients.
• Irradiation doesnt make food radioactive.
• Irradiated food must be labeled.

Questions 

1. In your own words explain the problem of food irradiation. 

The problem to me is that food irradiation is being taken lightly and not seriously. So more and more and eating irradiated food even thought they dont know its bad and what it can do. 

    3. You see two containers of a food at the supermarket. One is irradiated; one is not. The price s the same. Which would you buy?

I would buy the one that is not because it is healthier and i dont really trust irradiated food. I also dont really know what it does, so i would rather just stick with normal foods. 

Noise and hearing!!!

Noise Pollution

Noise pollution can be a very big problem and it can also have a great affect on people in the area. Noise pollution can come in many forms. Below i will give examples of how it comes and how it can effect people. 

What is Noise Pollution? 

 Noise pollution is a type of Pollution and it can be a energy pollution as well. There are all kinds of energy pollution like, Light and heat pollution. Noise pollution comes from, Barking dogs, cars/ motorcycles, trains, loud music etc. 

What are the effects of Noise Pollution? 

Noise pollution can Distract, Irritate, and also can hurt humans health, like deafness, cant sleep, heartburn high blood pressure etc. Noise pollution gets rid of other natural sounds and interferes with other sound waves. 

Ways to eliminate Noise pollution? 

 One way you can stop it, is like if you have loud music, or partying well you can just think of your Neighbors and just turn it down or just not have the party in the first place. Also you can just have the party somewhere else. For car noises, you can just not live next to a free way or next to a street. If a dog is barking and you get irritated just have the owner make sure she has her dog under control. 

Ways to help hearing loss? 

 A lot of doctor say that it is really hard to get you hearing back but some have very  weird and easy ways to get them back. For example, one doctor who i read about say that if you take vitamin pills then you can give energy to the cells in your ear that are dead then you may get better over the months or years, but you will never have you full hearing back. What i am hearing is that the pill solution is the most effective and will help you fast. 

So as you can see, noise pollution is one of the big three energy pollutions. So if i were you be very careful and aware of it.


Bibliography: 

1. http://what-is-what.com/what_is/noise_pollution.html is a really good site, that gave me a good amount of info on hearing and other stuff related to it. The article was posted on 15 October 2007. The article is by Google. 
2. http://www.geogise.com/environmental-issues/noise-pollution.php this site was the best, it gave me most of the info that i have on my blog. The article is by Google and was added on by Google. 
3. http://www.associatedcontent.com/article/58409/possible_ways_to_reverse_hearing_loss.html?cat=5 this site gave good info on what it does and how it kills. The article was posted on September 11, 2006 by Erika V. Cox. 
   
   

http://www.associatedcontent.com/article/58409/possible_ways_to_reverse_hearing_loss.html?cat=5

The lab with toning forks

Tuning Fork Lab

Guiding question:
How does density of various solids affect the wave sound waves travel from the tuning fork?

Hypothesis:
I think that all the materials will have a different sound and a bigger frequency.
Data Analysis:

Material:	Density:	Observation:
Locker	7.85 g/cm 3	Tuning Fork 480 B: Very high pitched, proves that that the smaller they are the louder they sound. sound lasts for 17.69 seconds. a lot less vibration than with the larger one. Tuning Fork 256 C: lower pitched, sound is slightly harder to hear (not as loud) sound lasts for 15.03 seconds. a lot more vibration with this one than with the smaller one.
White Board	2.8 g/cm 3	Tuning Fork 480 B: less vibration lasts for only 9 seconds. Tuning Fork 256 C: loud! not as much vibration as with lockers. sound lasts for 18.65 seconds.
Desk	0.75 g/cm 3	Tuning Fork 480 B: Just as loud as it was against the locker, sound lasts for, 12.35 seconds. Tuning Fork 256 C: Sound lasts for 30.73 seconds, More vibration than on white board and lasts for longer.
Wall	3.12 g/cm 3	Tuning Fork 480 B: Lasts for 20.75 seconds, more vibration than other ones. lasts longer than dest Tuning Fork 256 C: Sound lasts for 34.0 seconds, not very high vibration.
Wooden Floor	0.50 g/cm 3	Tuning Fork 480 B: last for 9.44 seconds, same vibration amount as locker, very hollow sounding. Pitch lower Tuning Fork 256 C: Lasted 30.43 seconds, vibration not very high, pitch was high sounding.
Cement floor	3.12 g/cm 3	Tuning Fork 480 B: Lasts for 7.05 seconds, vibration high, pitch higher than mlst tries. Very loud, loudest one. Tuning Fork 256 C: Sound lasts for 27.25 seconds, vibration very high, higher than usually but not as high as last try.

Conclusion:

The bigger the fork the lower the pitch and the smaller it is the shorter it goes. The best sound we got from the both forks is from the locker. All related to the forks when you put them against you lips or put your finger in between the two metal things then your finger feels really weird and fuzzy.

Further Inquiry:

If i were to improve my lab then i would, try the fork on different items. I would also make more then one observation on one item. The things i did good, would be everything because i helped with everything and i was a good partner.

Sites that you used:
No research was done.

Properties of Sound!!!!!

Sound can come in Low and High frequencies and it can come in different intensities. The intensity of a sound wave is the amount of energy the wave carries per second through a unit area, that came right from the Science Explorer book. A sound wave with a bigger intensity will sound louder than a wave with lower intensity.
A sound that is lower than a normal person can hear is called Ultrasound. What i think that means is that Ultrasound is when dogs can hear it, like those special dog whistle.
When a sound wave goes toward the ear, the waves will go to the ear with high frequency. The pitch of the wave increases when it comes and that is called the Doppler affect.

Sound!!!!

Sound, sound starts with a vibration that later on ends up with a human being hearing. The way the sound goes through our ear is that. First the sound goes into the ear canal, then into the eardrum so that you get the frequency, then it goes through the stirrup and then into the anvil and in the anvil there are tiny hairs that sway when sound comes in and then the hairs send the sound to the brain.
The speed of sound depends on the Elasticity, if you dont know what Elasticity is, then i will tell you, Elasticity is the ability of a material to bounce back after being disturbed. Also in the speed there is density and temperature.
Density in a medium is how much matter, or mass there s in any amount of space or volume.