Through the eye of Bill Nye

This morning in science we watched a Bill Nye video about eyes, and filled out the following questions. (answers are in Blue)

1. Nerves connect the eyeballs to the Brain.
2. The iris controls the amount of light that goes into our eye.
3. The eye gets protection from the eyelid /eyebrow
4. The optic nerve is about 20cm long.
5. If the eye is out of focus then images appear blurry.
6. The lenses changes shape so the eye can focus.
7. Rods and cones are the cells/nerves that make the image on the retina.
8. Cones allow the eye to see colours and bright light.
9. Colourblindness means there is plenty/not enough of light sensitive pigments on the retina.
10. Being blind doesn't stop people from doing things like walking and playing.
11. The eyes turn in to see how far away or ow close an object is.
12.If you lose an eye a doctor can make a(n) artificial.
13. Above the eyelid are the glands that produce tears.
14. An optical illusion is your brain and playing tricks on you.
15. the eyeball is the size of a ping pong ball.

Dilution Experiment

Dilution Experiment

Sydney

Abstract: Have you ever wondered why some body sprays are so expensive and others not? Maybe it’s because of how strong the scent is our how long it takes for others to smell it. Well wonder no more. My hypothesis is that yes the brand does affect how long it takes for the scent to diffuse across the space of ten feet.         

 

Procedure: To start off the experiment Mrs.N had us copy down the chart that we used to fill in our information. After we wrote down all the names and brands of all the body sprays. Mrs.J measured out ten feet and marked it with tape. Anybody that had a device went and got it and put it on the timer. The students stood on one side of the ten feet and the teachers on the other. Mrs.N then sprayed two squirts of the body spray in the air. As soon as Mrs.N sprayed the body sprays we started the timers. When we could smell the scent we stopped the timers. After we recorded the data on our charts. Then went out into the hallway to get some fresh air and get the scent out of our heads. Once we had the smell out of our heads we went back into the class and repeated it for the other three body sprays. We ended up only doing it for two more body sprays because one wouldn’t spray.

 

Data:

Brand	2 Squirts Yes/No	Time took to diffuse across 10 feet
DKNY	Yes	16 sec
NSPA	Yes	8 sec
JLo	No	N/A
Beauty Rush	Yes	18 sec

 

Conclusion: I figured out that no the brand really does not affect how long it took to smell the scents from ten feet away. I think the factors that affected it most were what the scents smell was. Also how much each pump sprayed out really affected the results. I also think that if we had more body sprays to test the results may vary a little. We had one higher end perfume but it wouldn’t spray. As a result I don’t think the brand really makes a difference in how long it takes for you to smell the body spray.  

Aboriginal Perspective of Life

Today in science our class looked at the Aboriginal perspective of how life is centered around the idea of a balance in life. We talked about having harmony between mental, emotional, physical and spiritual components. After learning about the medicine wheel we made our own medicine wheels but personalized about ourselves.


aboriginal medicine wheel. (2014)
 availible at http://www.pinterest.com/pin/404127766535185633/