Answer anybody with an explained method- how can you drain water from a glass without touching the glass?
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Answers
Answer:
Upside Down Glass of Water Experiment
Have you ever tried turning a glass of water upside down without spilling it? It seems impossible! Both kids and adults will be amazed by this experiment that appears to defy gravity.
With just a few simple household items, you can try this simple and fun science experiment where kids can get see the effects of air pressure in action. Printable instructions, a demonstration video, and an easy to undertand explanation of how it works are included below.
Helpful Tip: Be sure to try this experiment over a sink or large container lest you accidentally make a BIG wet mess!
Upside down Water Glass Experiment
Upside Down Water Glass Video
Upside Down Water Glass Video
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Supplies Needed
Drinking Glass
Water
Thick Sheet of Paper that is long and wide enough to cover the entire mouth of the glass. (We used a piece of poster board)
Large Container or Sink
Upside down Glass of Water Science Experiment
Play Video
Experiment Instructions
Upside Down Water Glass - Step 1
Step 1 – Begin by filling the empty glass with water.
Helpful Tip: Ensure that the water is completely to the top of the glass. If there is any space between the water and the paper, the experiment won’t work.
Upside Down Water Glass - Step 2
Step 2 – Gently place the paper on the top of the glass.
Upside Down Water Glass - Step 3
Step 3 – Move the glass over the container or sink.
Upside Down Water Glass - Step 4
Step 4 – Gently place your hand on the paper, then flip the glass over.
Upside Down Water Glass - Step 5
Step 5 – Remove your hand from the bottom and watch in amazement as the paper stays covering the glass and the water doesn’t spill out.
How Does the Experiment Work?
The reason this experiment works is because of air pressure! Air pressure is the weight of a column of air pushing down on an area. While we cannot feel it, the air is heavy! The weight of the air pushing down on all objects on Earth is the same as the combined weight of three cars! The reason we don’t feel this extreme weight is that the molecules in air push evenly in all directions – up, down, sideways, diagonally. In this experiment, the air pushing up from underneath the paper is strong enough to overcome the weight of the water pushing down on the paper. Because of the air pressure pushing up on the card, the card will stay on the glass and the water will not spill out.
Do note that while the paper will stay for a while, the paper will become saturated and it will fall eventually.