Question

1.friction is more on a ---------- surface than on a------------surface
2.the milky way galaxy is------------in shape
3.when electricity is passed through a liquid it causes a ____________ change. This effect is called the ________ effect of current.
4.___________ was the first person to prove that clouds build up charge during _______ .
5. Kaleidoscope is based on the principle of ___________ .

Answer 1

1.Friction is more on a rough surface than on a smooth surface.

2.The Milky Way Galaxy is spiral in shape.

3.When electricity passes through a liquid it causes a chemical change. This effect is called the chemical effect of electric current.

4.Benjamin Franklin was the first person to prove that clouds build up charge during lightning.

5.Kaleidoscope is based on the principle of multiple reflection.

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