Field trip to Nehru Science Centre IGCSE -I
Students of Igcse 1 set out on a field trip
to Worli, to experience the basic principles and marvels in science and technology
at ‘The Nehru Science Centre,’ on Friday, 4th October 2013.
We arrived at 10 am to the science center
and proceeded towards the reception hall.
In the reception hall students saw exhibits
on Energy transfer, Electric Potential, Vortices and Electromagnetism.
Then the students were taken to the Spark
theatre where the students had a hair raising experience & enjoyed many
other exciting static electricity demonstrations with Van de Graaff generator
having a 75 cm dome.
Students experienced their hair standing up
due to static electricity as well as saw bubbles repelling and aluminium cup
flying away due to the charge of the generator.
A harmonograph is a mechanical device that
uses swinging pendulums to draw pictures, believed to be originally invented in
1844 by Scottish mathematician Hugh Blackburn.Then students experienced how to
make a harmonograph. Two lateral pendulums swing back and forth at right angles
to each other with arms connecting to a pen. One moves the pen from side to
side, and the second moves it from front to back on the paper. A third
"rotary" pendulum moves the paper by swinging on any axis or in
circular motions, while the pen is drawing on it. The combined motions of all
three pendulums generate the resulting drawing.
Then the students proceeded towards
‘Science Show’.Students were shown exciting chemical reactions on the
following:
1)
Invisble disappearing Ink: Base: This demonstration shows that
phenolphthalein is a chemical that displays different colors depending on
either the acidity and the basicity of the environment.
2)
Feeling blue: Redox reaction:
When a solution of potassium hydroxide, dextrose and methylene blue is shaken,
the oxygen dissolves into the colorless solution causing the methylene blue to
oxidize into its blue form. As the blue solution is left to stand, the solution
turns colorless as the methylene blue is reduced.
3)
Burning Money: The water from
the water-alcohol mixture absorbs much of the heat energy that is generated
when you ignite the bill. The temperature of the paper money does not rise
above the temperature required to burn the paper. The water is first heated to
its boiling point and then vaporized by the heat of combustion from the burning
alcohol.
4)
Super absorbent: The secret
water-absorbing chemical in a diaper is a superabsorbent polymer called sodium
polyacrylate. A polymer is simply a long chain of repeating
molecules.Superabsorbent polymers expand tremendously when they come in contact
with water because water is drawn into and held by the molecules of the
polymer. They act like giant sponges. Some can soak up as much as 800 times
their weight in water!
5)
Elephant toothpaste: Elephant
toothpaste is a foamy substance caused by the rapid decomposition of hydrogen
peroxide.
Students then proceeded
for the I am Mother show. Students learnt about human anatomy as the different
internal organs in a life size transparent glass model of a human body light
up. Synchronised commentary supported with PowerPoint presentation and animations explained the
functions of these organs.
All students then divided into two groups.The
respective groups saw Physics and Biology Exhibits and then interchanged after
an hour.
In Physics students explored Hall of Light
and Hall of Sound and learnt about:
1)
Wave propogation
2)
Doppler effect
3)
How sound travels
4)
Physics behind Musical
Experiments
5)
Frequency and Resonance
6)
Hyperboloid
7)
Electric Potential
8)
Fiber optics/ speakers/3D image
In Biology students explored the Hall of
Human and Machine and learnt about the following:
1)
Nervous system:Brief outline on human brain Anatomy with Animations.
2)
Digestive system Exhibit. : Parts of the alimentary canal are
highlighted specific to the item that is digested.
3)
Specimens of heart, featus etc
4)
Reflex action: Probing the brain; Shaking hand: Sensory, relay and motor
neuron.
5)
Replacement of organs.
6)
Giant heart with vessels and valves.
7)
Eye and vision
8)
Respiratory System
9)
DNA quiz
10)
Excretory system: activity
12)
Stem cell research
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