Tina wants to fill her dropper with ink from an ink bottle. She dips the dropper into the bottle, presses the dropper and pulls it out. a) Will there be ink in the dropper?
b) What should be done to fill the ink in the dropper? Why?
(2 Points)
Answers
Answer:
Explanation:
a) No. Pressing dropper will release all the liquid into the bottle. Pressure inside the dropper will be greater ink will not be pulled up into the dropper.
b) Tina should keep the dropper dipped into the Ink and release the rubber bulb. As a result, the pressure inside the ink becomes greater than the pressure inside the dropper. Hence the outside air exerts pressure and pushes the Ink into the dropper as she releases the rubber bulb.
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When the nozzle of a syringe is dipped in a liquid and its piston is withdrawn, the pressure inside the syringe is lower. The greater atmospheric pressure acting on the surface of the liquid pushes the liquid up into the syringe. ... The rise of liquid in a dropper is due to atmospheric pressure