The student conducted an experiment using a plastic cup filled with water, cardboard, and sunlight to test if zero gravity could be created. They found that when the cup was inverted with cardboard placed on top, the cardboard remained in place due to the lack of air bubbles and gravity within the fully submerged cup. The student concluded that zero gravity can be achieved and learned this principle allows floating, but still wonders why people sink in the ocean if they can float in other water.
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Zero gravity
1. I Wonder If we Can make
zero Gravity
By Melissa Liu 3/4C
2. Experiment Time!
To find the answer to this question, I had to try an experiment. These items
are what I use to experiment:
1.Clear Plastic Cup
2.Water
3.Cardboard/paper
4.A sunny day
Steps
1.Fill up your cup with water to the top.
2.Put you cardboard/paper on top of the cup.
3.Hold your cup upside down.
4.Slowly remove your hand and see what happens.
3. Results!
The piece of cardboard stayed there like it was glued to the cup. No matter how
hard I shook it, the cardboard didnt fall off!
4. How does this Happen?
The reason of this happening is gravity. Because the whole cup is filled
with water, there is no air which means no gravity either, so the answer
to my question is.YES!
I have also learnt that this is also the reason why we float in the water
and why solid objects fall so slowly in water.but I still wonder why
we sink in the ocean if we can float.
