If you fill the cup with water, poke holes in a piece of paper, and then use it to cover the cup, and then flip the cup upside down holding the piece of paper over the cup, and then slowly take your hand away...will the paper fall off? Will the water leak through the holes? What do you guys think? I'll find out for you all through this experiment ^^.
I've always found this interesting, how umbrellas can prevent us from getting wet, I mean, if you squint and look closely at the cloth of the umbrella, there are visible holes. So why doesn't the rain just fall through those holes, I mean, liquid can leak through any hole, no matter what the size, right? This will also be investigated through this experiment ----- the bonds formed between water molecules~.
If I were to conduct this experiment, the dependent variable will be whether the paper will fall off or not, and whether water will leak through or not.
The independent variable in this experiment is the amount of air entering into the upside down cup.
The variables that will need to be controlled include the following:
- the paper cannot be folded, it has to be flat
- the size of the paper has to fully cover the opening of the cup
- the same size of paper should be used for repeating the experiment
- the paper has to be pressed down firmly around the edges of the cup
- the holes should only be poked with a pin, nothing bigger
- the same pin should be used when repeating the experiment
- the same cup should be used when repeating the experiment
- the same amount of water has to be used for repeating the experiment
That's all I can think of so far....can't come up with anything else, and I'm kind of confused about the dependent and the independent variable in this experiment....hard D=.
Hope this works ^^!
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