NASA's Kepler Discovery Confirms First Planet Orbiting Two Stars
This news was rather shocking to me, because it seems totally impossible. However, it is possible, and the more shocking fact is that how did NASA even know about this?
This marks an advancement in our science technology. Now that science technology is advancing so fast, it may be possible for humans to live in another planet. However, this planet orbiting two stars may be even an tourist attraction in the future, where tourists get to experience two sunsets. This no doubt is shocking news.
I feel that this planet is rather cool, because it is like the planet in Star Wars. It is even possible that weapons as advanced as light sabers may even be invented in the future, all we have to do is keep advancing.
Sunday, September 18, 2011
Self initiated Research - STD Video
This was a compulsory assignment for everyone and from it I learned alot. We could choose on whether to put in effort and I chose to. I learned many things about the 3 main sexually transmitted diseases (STDs) and it is like a warning to us; to show how much we would suffer just because of one mistake.
Obviously, sexually transmitted diseases are transmitted through sexual intercourse. However, what shocked me is that it also can be transmitted through oral and anal sex. This is also another warning to us.
Overall, I feel that I have learned a lot about sexually transmitted diseases (STDs) and I will be more careful about what I do in the future.
This is the video:
Obviously, sexually transmitted diseases are transmitted through sexual intercourse. However, what shocked me is that it also can be transmitted through oral and anal sex. This is also another warning to us.
Overall, I feel that I have learned a lot about sexually transmitted diseases (STDs) and I will be more careful about what I do in the future.
This is the video:
Field trip - MacRitchie Reservoir
My class and I went to MacRitchie Reservoir on the 9th of May 2011 for an ecology trip and it was quite fun. Even though there was not much animals, the nature trail and the insects could be seen on the water surface was definitely something that cannot be seen inside a classroom.
Even though many people complained when we were told that we were going to a reservoir, I felt that it was a trip that was worth it. It helped open my eyes to the beauty of nature. Even though there was alot of pests there, the flowers were very beautiful and it was quite a scenery.
Overall, I feel that this was a great trip and the conditions of the habitats there were quite interesting.
Even though many people complained when we were told that we were going to a reservoir, I felt that it was a trip that was worth it. It helped open my eyes to the beauty of nature. Even though there was alot of pests there, the flowers were very beautiful and it was quite a scenery.
Overall, I feel that this was a great trip and the conditions of the habitats there were quite interesting.
Term 3 Reflection for Test
For the term 3 test, I got 91%, which is 36.5/40. I was quite happy with this result because I had topped the class. However, my choice of words during this test could have been more accurate and precise. Even though I knew the answer to all the questions, I did not know how to phrase the answer, resulting in the lost of marks. Furthermore, I was complacent and did not study for ecology, and I ended up losing 0.5 marks at the ecology section of the paper.
After this test, I have learned how to phrase my answers to ensure that my answer reflects what I am thinking. I also learned from my friend's mistake, he did not phrase his answers correctly, and even though I knew from his answers what he was talking about, he got penalized marks because of the wrong word choices.
I will continue to work harder for the End of Year Exams and I sincerely wish that I will be exempted for science.
After this test, I have learned how to phrase my answers to ensure that my answer reflects what I am thinking. I also learned from my friend's mistake, he did not phrase his answers correctly, and even though I knew from his answers what he was talking about, he got penalized marks because of the wrong word choices.
I will continue to work harder for the End of Year Exams and I sincerely wish that I will be exempted for science.
Term 3 Topic - Refraction
Refraction is rather complex, yet simple at the same time. Refraction is the "bending" of light, where light moves at a slower/faster speed in different mediums, hence causing an "illusion".
Firstly, if a light ray is travelling from an optically denser medium to an optically less dense medium, it will bend towards the normal. Secondly, if a light ray is travelling form an optically less dense medium to a optically denser medium, it will bend away from the normal.
This causes optical illusions, where a swimming pool looks shallower then it really is. Even though it may not seem very practical in real life, it is actually very related with our lives because we see things differently from what others see because of refraction
This is basically all you need to know about refraction, and it is basically all I learned about it. :)
Firstly, if a light ray is travelling from an optically denser medium to an optically less dense medium, it will bend towards the normal. Secondly, if a light ray is travelling form an optically less dense medium to a optically denser medium, it will bend away from the normal.
This causes optical illusions, where a swimming pool looks shallower then it really is. Even though it may not seem very practical in real life, it is actually very related with our lives because we see things differently from what others see because of refraction
This is basically all you need to know about refraction, and it is basically all I learned about it. :)
Term 3 Topic - Reflection
The last subject for science, Physics. Physics, in my opinion, is the easiest subject of all the science subjects, because physics is about understanding concepts and applying formulas, one which I am quite good at because of my good math skills. The topics are reflection, refraction and lens.
For reflection, there is one main law. "The angle of incidence is equal to the angle of reflection." Following this law, we can easily find out how to draw a light ray and can predict where a light ray will end up at when reflected on a plane mirror.
However, reflection on a convex/concave mirror is not so simple. To calculate the angle of the reflection, a tangent must be drawn to the curve of the mirror and then the tangent can be treated like a plane mirror. This will allow one to be able to calculate the angle of reflection for light rays that are reflected by convex/concave mirrors.
Lastly, total internal reflection. This happens when light is travelling from an optically denser medium to a optically less dense medium, and when the angle of incidence of the light ray is greater than the critical angle. This reflection is just like the mirrors mentioned before.
For reflection, there is one main law. "The angle of incidence is equal to the angle of reflection." Following this law, we can easily find out how to draw a light ray and can predict where a light ray will end up at when reflected on a plane mirror.
However, reflection on a convex/concave mirror is not so simple. To calculate the angle of the reflection, a tangent must be drawn to the curve of the mirror and then the tangent can be treated like a plane mirror. This will allow one to be able to calculate the angle of reflection for light rays that are reflected by convex/concave mirrors.
Lastly, total internal reflection. This happens when light is travelling from an optically denser medium to a optically less dense medium, and when the angle of incidence of the light ray is greater than the critical angle. This reflection is just like the mirrors mentioned before.
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