You've watched "Youth Guru - Gymnastics Warriors" during assembly.
07 April 2010
04 April 2010
31 March 2010
Animation on conduction
Eureka! is a TV series that was produced and broadcast in 1980 to illustrate concepts in physics through humorous comic episodes.
30 March 2010
26 March 2010
Give your ice a lift
Explanation:
Salt is sprinkled around the thread/stick and salt water has a lower melting or freezing point than pure water. The ice cube melts at the places where salt is sprinkled. Temperature of this water above the ice cube is below 0°C.
When salt dissolves in more of the melted ice, the solution gets more diluted, increasing the freezing point closer to 0°C. As the water has temperature a few degrees below 0°C, it freezes again.
23 March 2010
16 March 2010
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