Post by ironhold on Nov 8, 2014 22:51:27 GMT
All experiments posted in this section should be done with adult supervision in a controlled environment and with reasonable safety precautions.
Posters are requested to include this comment about safety in their threads.
People trying any of the experiments posted her do so at their own risk. The Citadel will accept no responsibility for accidental damage or injury etc.
Additionally, as this experiment involves the use of water, it is best performed in an area in which water spills will not cause problems and can easily be cleaned up.
Requirements:
*1 plastic milk jug, emptied and lid removed
*1 container full of water, the container being large enough to submerge the jug
Steps:
1. Fill the container full of water if you have not already done so.
2. Tilt the jug sideways and submerge it in the water at least as deep as needed to cover the opening, and then perhaps a few centimeters further. Do you see bubbles coming up from the opening as the water comes in? Why might this be?
3. Once the jug is at least half full, turn the jug so that the opening is facing upright and lift out of the water.
4. Once the jug is out of the water, tilt the jug so that the opening is facing downward at approximately a 45 degree angle. The water should begin pouring out of the jug. Is the water periodically surging as it comes? Is the surging enough to cause the jug to begin flexing whenever it happens? Why might this be?
When the jug is first submerged, water comes rushing in, forcing the air out. When the jug is drained, the out-flowing water makes room for the air to surge back in.
(I noticed this effect this afternoon while washing the dishes. Someone emptied a milk jug, and it needed to be rinsed clean so that it could go in the recycling bin.)
Posters are requested to include this comment about safety in their threads.
People trying any of the experiments posted her do so at their own risk. The Citadel will accept no responsibility for accidental damage or injury etc.
Additionally, as this experiment involves the use of water, it is best performed in an area in which water spills will not cause problems and can easily be cleaned up.
Requirements:
*1 plastic milk jug, emptied and lid removed
*1 container full of water, the container being large enough to submerge the jug
Steps:
1. Fill the container full of water if you have not already done so.
2. Tilt the jug sideways and submerge it in the water at least as deep as needed to cover the opening, and then perhaps a few centimeters further. Do you see bubbles coming up from the opening as the water comes in? Why might this be?
3. Once the jug is at least half full, turn the jug so that the opening is facing upright and lift out of the water.
4. Once the jug is out of the water, tilt the jug so that the opening is facing downward at approximately a 45 degree angle. The water should begin pouring out of the jug. Is the water periodically surging as it comes? Is the surging enough to cause the jug to begin flexing whenever it happens? Why might this be?
When the jug is first submerged, water comes rushing in, forcing the air out. When the jug is drained, the out-flowing water makes room for the air to surge back in.
(I noticed this effect this afternoon while washing the dishes. Someone emptied a milk jug, and it needed to be rinsed clean so that it could go in the recycling bin.)
