Answer here.
Saturday, 5 December 2015
Saturday, 15 August 2015
National Talent Search Exam 2015 - Stage 1
Details about NTSE 2015 can be viewed by clicking the link Olympiads and Other Exams on the right hand side.
Wednesday, 22 July 2015
Why is double circulation necessary?
- Animals that have double circulation systems need blood to be supplied to their tissues quickly due to their relatively high metabolic rates i.e. rates of energy used in the chemical reactions within their bodies (compared with e.g. fish). This necessitates sufficient blood flow because the transport functions of bloodinclude supplying the tissues with the chemical substances needed to continue activities including the essential chemical reactions.
- Animals that have double circulation systems also need to maintain relatively high body temperatures - which requires sufficient blood flow due to the blood's role in maintaining body temperature as neOcessary for homeostasis.
Source: http://m.ivyroses.com/Biology/Transport/Double-Circulation.php
Tuesday, 21 July 2015
Wednesday, 15 July 2015
Being Scientific: a beginning
A few days ago, I was having lunch in the school staff room. Two new teachers walked in and sat beside me. So after the usual "Aapka
kya naam hai, Kahan rehte ho, Kaunse teaching subjects hain?" (Oho!
Science student ho!) the
conversation turned to matters of food. Among other things, one of the teachers mentioned that her religion forbade her from eating pork, but that
eating fish was acceptable. Another teacher asked her why this was
the case. The first teacher replied that it was okay to eat fish because fish
didn't have blood.
For a second, I couldn't believe my ears. I looked at her, expecting a more complete and less absurd explanation. But she was silent. Her voice carried conviction. But to me that conviction was disturbing and scary. My first instinct was to rush and tell her the "scientifically proven truth," that fish do indeed have blood, a heart, the works, and yes, I know this, not from a textbook, but because I have dissected fish. But before I had a chance to say anything, she and her friend abruptly walked out for a drink of water.
I realized then that it wasn't as simple as "telling someone a fact." Here was a classic case of faith versus science. This teacher firmly believed what her faith told her. All the science in the world can sometimes fail to shake that faith.
I don't know what she would think if she did indeed witness a fish being cut. Would she continue to eat fish? Or would she stop? It's as much an individual's dilemma as it is the entire faith's.
Students, please share your experiences in battling superstitions and myths with science and logic.
For a second, I couldn't believe my ears. I looked at her, expecting a more complete and less absurd explanation. But she was silent. Her voice carried conviction. But to me that conviction was disturbing and scary. My first instinct was to rush and tell her the "scientifically proven truth," that fish do indeed have blood, a heart, the works, and yes, I know this, not from a textbook, but because I have dissected fish. But before I had a chance to say anything, she and her friend abruptly walked out for a drink of water.
I realized then that it wasn't as simple as "telling someone a fact." Here was a classic case of faith versus science. This teacher firmly believed what her faith told her. All the science in the world can sometimes fail to shake that faith.
I don't know what she would think if she did indeed witness a fish being cut. Would she continue to eat fish? Or would she stop? It's as much an individual's dilemma as it is the entire faith's.
Students, please share your experiences in battling superstitions and myths with science and logic.
Thursday, 25 June 2015
Monday, 11 May 2015
Subscribe to:
Posts (Atom)