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Download a good collection of questions from Class 8 Science NCERT Textbook. The collection includes questions requiring Higher order thinking skills (HOTS
Is it possible to create a rocket with a variable blast diameter to achieve different levels of torque and power similar to a geared transmission?
I suppose the best analogy I have is the difference in power between a garden hose normally and when you plug it with your thumb, creating more pressure.
Would it be possible to have a rocket launch with maximum diameter, and slowly close up like a camera shutter to gain speed once in the air? Perhaps this shudder would be angled like a funnel to direct the blast easier. All the rockets I see have a fixed diameter and it just makes me curious.
Experts in the field are requested to answer via comments
Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.
Science is built up of facts, as a house is built of stones; but an accumulation of facts is no more a science than a heap of stones is a house. ~Henri Poincaré,Science and Hypothesis, 1905
The whole of science is nothing more than a refinement of everyday thinking.
We found these links worthy to read.
The Beginning of Infinity: Explanations that Transform the World
The Quantum Story: a History in 40 Moments
I have got an assignment from school about making an energy transformation model and I have no idea what to do!
Can you help me? (Posted by Maddy on 28 Aug 2011)
(Expecting suggestions from visitors and members)
There are many simple models for energy transformation. One of the themes for this years Science Exhibitions suggested by NCERT is “Energy Conservation”.
Any generator is a device for energy transformation.
You can think of any device which can convert energy from one form to another.
We are starting a series of quizzes to enable the students to practice for online quizzes.
Take the sample quiz below for getting an idea on how the quizzes will be coming. If you like it, let us know. Post your reactions as comment to this post. Based on the popularity, we will be adding more such quizzes of different duration and themes.
The Sample Quiz below is of just five questions.
You will get your score and can revise the answers at the end of the quiz.
Sample Science Quiz
The KVS Regional Science Exhibition 2010 (Chennai Region) was conducted at KV Pattom on 1 & 2 Sep 2010