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 I have to make a science working model on any topic. What should I make and how?

 Volcano Model

Ingredients

1.Warm water

2. Baking soda

3. Liquid dishwashing detergent

4. Vinegar to make the lava for your volcano. Y

You can color the lava by adding food coloring or powdered drink mix.

To cause an eruption, fill the bottle most of the way full with warm water. Warm water produces a better eruption than cold water because the higher temperature increases the rate of the chemical reaction that makes the lava. Add a squirt of dishwashing liquid, some food coloring to color your lava, and a few spoonfuls of baking soda. When you're ready to start the eruption, pour vinegar into the volcano.

Prepare base for mountain using cardboard, newspaper and all

then follow simple process as explain above.

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making a kalidoscope.

first take 3 glass pices. give it to a shop for polishing and shaping in the shpe of rectangle.

now join the three pices in a triangular form. cover one end with another glass, now put some broke bangle pices or beeds. the other end also you should cover with transparent glass. now, cover the model with gift wrapper. and here is the kalidoscope

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Electric Generator based on Faradays Electro-magnetic induction.

Take a metal rod bent at its ends and coiled with copper wire.Rotate a magnet inside the bends of the metal near to the coil.Connect the two ends of the coil to a LED or so  and you will observe LED glows when the magnet is rotated.

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