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- Floating squid-looking object sinks when bottle is squeezed.
- Squid contains a plastic pipette, partially filled with air. When the bottle is compressed the pipette experiences an increase in external pressure, causing the volume of air inside the pipette to decrease. This decrease in volume reduces the squid’s buoyancy, and squid sinks.
- Located in Lo2, section D2.
- Balance the hoop on the glass bottle as shown. Carefully
place the marker on top of the hoop, directly over the mouth of the bottle.
Swipe the hoop out from underneath the marker with one, quick, horizontal motion. Marker should fall directly into bottle.
- The two tricks to doing this demo successfully are: 1) placing
the marker directly over the mouth of the bottle, and 2) making quick, horizontal swipe.
- The hoop is marked on the outer and inner rim to help with marker and hoop placement, and a plumb bob is suspended to indicate vertical.
Practice a few times before using it in class. Make sure swiping motion is totally horizontal.
- Located in L02, section B3.
