Activity 8 A Take a tin can, some coloured water, a sharp pin/nail and some cellotape. Make with the pin/nail at four different points, along a vertical line in the tin can, as she M in the figure. These holes should be equidistant, Cover the holes with cellotape. p. th the can on a stool and fill it with coloured water. Now, remove the tapes from o holes and observe the streams of water coming out of these holes. We observeru the stream, from the lower holes travel a larger distance. Why? What do we infe Tin with four equidistant holes Streams of coloured water emerging out Coloured water Ground level The emerging water goes out farther from the lower holes; this is because ti pressure of water increases with an increase in the 'depth of the hole. Hence i water pressure, at a point, increases with the height of water column above it. Try repeating the steps of above activity using, say vegetable oil instead of colour water. What do we observe? Do the streams of vegetable oil travel the same distance from the same holes? ​