Project 5- Journal 4

Posted on September 17, 2008 by rlakshman.
Categories: Science.

        1. What did you like about this project?

The thing that I  like about this project is the part where we had to make an advertisement. I also liked doing pracs in this project because we learn more when we actually see it and visualise what is hapenning.

 

         2. What did you not like about this project?

The thing that I did not like about this project was the webquest. This is because we had 1 lesson to do the webquest and had limited computers. We had to split the questions so I didnt learn the questions that my other group members researched on. I believe that the webquest should be part of the project and due when the final product is due.

 

         3. Suggest 3 ideas that could improve/make this project more engaging.

Three ideas that could improve/make this project more engaging is by not doing the webquest, do more pracs and watching somes movies about the project. I believe that this would make the project more engaging.

 

         4. Did you like the driving question? Explain why/why not.

I liked the driving question because there is no real answer to it. This is good because we know that our answer isnt wrong so our opinion could be correct. I believe that the future projects should have driving questions like this project so then we could know what people believe.

Project 5- Journal 3 (Conclusion)

Posted on August 30, 2008 by rlakshman.
Categories: Science.

We modeled what happened when two tectonic plates collided. We used stacks of papers and the textbook and saw what happens when two stacks of paper are pushed together, one stack of paper still while the other stack of paper pushes the stack of paper that is still and finally when a stack of paper pushes a textbook. I have learnt about tectonic plates and my question/ aim was answered.

Project 5- Journal 2 (Conclusion)

Posted on August 28, 2008 by rlakshman.
Categories: Science.

  We modeled the mid-ocean spreading of tectonic plates. When we pull the paper apart, it forms a curve which relates to the mid-ocean ridges. We learned how the mid-ocean spreads of tectonic plates. As the paper went further out, the height of the paper of the gap went higher. My aim/ question was answered.

 

Project 5- Journal 1 (Conclusion)

Posted on August 26, 2008 by rlakshman.
Categories: Science.

We investigated the movement of the convection current for both experiments. For the hot convection, the potassium permanganate goes up then swirls back down and for the cold convection; the potassium permanganate just stays at the top when it touches the water and the bag of ice at the same time. My question/ aim was answered.

Project 4- Journal 4

Posted on August 20, 2008 by rlakshman.
Categories: Science.

1. Likes and dislikes of this project…..any suggestions on how to improve???

The thing that I liked about this project is doing pracs and designing an optical instrument in our group because I wasnt bored lazy while designing and doing prac. The thing that I disliked about this project was going into our research without having an idea of what were meant to research. We can improve this by experimenting it with real thing. An example is for refraction going to the swimming pool and throwing a stick in and see how it refracts so we could have a better understanding of what were meant to research and know if what were researching is right or wrong.

2. What areas do you think you have improved in from project 1 to project 4?

The areas I have inproved in from project 1 to project 4 is my skills on wikispace and writing a scientific report. I also improved on my presentation skills and how to speak clearly and not read fully from the palm card. 

3. What further skills would you like to develop over the next few projects?

The further skills that I would like to develop over the next few projects are my presentation skills and writing a better scientific report. I would also like to learn how to use wikispace properly.

Project 4- Journal 3

Posted on August 12, 2008 by rlakshman.
Categories: Science.

 Q1.) Analyse why red sunsets can sometimes be more impressive when there is more dust or pollution in the air than usual.

 

Red sunsets can sometimes be more impressive when there is more dust or pollution in the air than usual because the light rays get refracted which shows the spectrums. The spectrums have a lot of colours so it looks more impressive like a rainbow.

 

Q2.) Describe what happens inside water droplets to cause a rainbow and explain how you can tell whether a rainbow is a primary or secondary.

 

The thing that happens inside water droplets to cause a rainbow is that the light is refracted and internally reflected which shows the illusion. You can tell whether a rainbow is a primary or a secondary because a primary rainbow would always have the colours of the spectrum in order- from red to violet, but a secondary rainbow would contract and be in different orders. 

 

 

Project 4- Journal Entry 2

Posted on August 9, 2008 by rlakshman.
Categories: Science.

 Investigate the two types of sight defect- long-sightedness and short sightedness.

Find the following information:

1. what causes the defect

Long-sightedness: Defect caused when the focal point moves behind the retina because the eyeball is too short.

Short-sightedness: Defect caused when the focal point moves away from the retina because eyeball tends to be long. 

2. the symptoms displayed

The syptoms that are displayed are that the object appears blurry and cant be able to read clearly. Another symptom is that headache would occurs and you would squint which is bad for your eyes.

3. propose what sort of lens may be used to correct each vision.

Long-sightedness: Convex lens so it could bend the light and so the retina can focus.

Short-sightedness: Concave lens so it can bend the light rays outwards therefore the light rays have a greater angle to bend back to focus through the lens.

 

Project 4- Journal Entry 1

Posted on August 2, 2008 by rlakshman.
Categories: Science.

Fibre optic technology offers many advantages when used in medical applications.

 

a.     Describe how optical fibre may be used in medical applications.

Optical fibres may be used in medical applications like an endoscope because its provides doctors with the images in the body magnified.

b.    Identify the traditional medical techniques that optical fibres might replace.

They might replace a magnifiying glass or the equipments used to see in a human body.

c.    Evaluate the benefits of fibre optic technology to medicine. 

The benefits of using fibre optic technology to medicine is so the doctors can see if there is any infection or diseases in a human body.

 

JOURNAL ENTRY 3- Phoenix

Posted on June 16, 2008 by rlakshman.
Categories: Science.

Q1.) What do you think the Phoenix will find?

I think that the Phonix will find details of Mars such as if there is any life, and find soils and rocks on Mars.

 

Q2.) Do you think as a planet we should be researching other planets? Why/ why not?

I think as a planet we should be researching other planets so if anything happens to Earth we would know what planet we can go to. 

 

 

Journal 2- THE BIG BANG

Posted on June 11, 2008 by rlakshman.
Categories: Science.

What contribution did the following scientists make towards the big bang theory?

 

Walter Adams- he knew the age of the universe by looking at the distsants of the stars.

 

  Ralph Alpher- he made the first attempt to calculate the abundance of elements created in the hot early universe and also predicted the temperature of the radiation left over from the Big Bang. 

 

Robert Dicke- he established the importance of the measurements of Arno Penziaz and Robert Wilson in terms of the cosmic microwave background.