Thursday, August 30, 2012

Term 1 Week 2~4

Science As an Inquiry
I learn that the elements of science are attitudes, process and Methods, and finally products. I know that being a scientist and a student, one must posses these skills and techniques to become a good scientist/student(learning science).
Attitude is the  willingness to modify their own views in the face of new evidence,respect for ideas of other and not to jump to conclusions without investigating(through experiments and all) Scepticism for generalisations not based on verifiable (repeatable) observations.  Being objectivity by seeking data and information to validate observations or explanations.  Also, having the interest and enjoyment in studying the marvels of nature.

Process skills involve: observe, classify, communicate, measure, infer, estimate and predict, well of course logically, and also proving it. We must observe carefully and measuring accurately. And also Communicate with our working partner effectively. Making Inference and developing a hypothesis.Effective Planning or designing experiments to test the hypothesis.

Products of Science are the info and ideas of science that have been recorded as scientific knowledge. Scientists build on what other scientists have discovered. Video conferencing, the Internet and cloning of animals are all products of technology. 

But then with science there is benefits, but also the abusing of science knowledge. Science can help to prolong one's lifespan and also improve healthcare, which kind of prolong-ing the lifespan of one. It can help to improve one's lifestyle and help to make things more convenient and comfortable. Oh, and one more benefits is that it helps to connect people around us through the virtual world, on social platforms, like facebook and twitter. But then science can cause troubles too, for example: polluting the environment, destroying life and agriculture(nuclear incidents) and also the most concerned: depleting of natural resources), thus upsetting the law of nature! Like when people clear out forests for development and they usually clear the forests out through burning, which pollute the environment and contributing to global warming, as the carbon dioxide given out is one of the greenhouse gases. These gases is then trapped within our atmosphere, warming up the Earth.

Well, of course, Science cannot give life to non-living object(but can cure an ill person), unable forecast future events. And also, explain matters relating to religions, like gods deities or myths. And neither helping us return to the past or go to the future(although my dream, since young, was to build a time machine:P). 
 
On this lessons, Mr Sim, our science/form teacher, teaches us how science is applied to the jobs, requiring science. We were also given an activity, on if we are given a chance to interview any scientist from either the past or present, what will we say and ask. Mr Sim also brief us through the safety measures and the rules while being in the science laboratory, about the DOs and DON'Ts. We are also given an activity to help us apply what we have learnt about the rules of the science laboratory. There is a picture, showing a scene of a lab, filled with students doing experiments, and we are required to spot out which student in the picture have violate the rules or which student obey the rules. Mr Sim, teaches us about the lab's tools and apparatus, on why are the apparatus model that way and how to use it and on which occasions should we use these apparatus. And we are also taught of the Bunsen burner, what is a non-luminous flame and what is a luminous flame, how to characterize them.

 Luminous flame   
 -occurs when the air-holes are 
     closed and very little air is 
   allowed to mix with the gas 
-carbon particles are on apparatus            
 - orange 
  - appears flickering and unsteady 
 - not very hot

Non-Luminous flame           
-produced when the air-holes are open  
-sufficient air for gas to burn completely 
 - occurs when the air-holes are 
open, allowing air into the burner 
- blue 
- burns steadily 
- hotter than the luminous flame 
- hottest part of the flame is just 
 above the tip of the blue zone. 

There will also be strikebacks if you are not careful! And you must hold the boiling stuff at the right position.

so be careful whenever handling Bunsen burner.


 

 

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