|Search||Hot Links||What's New!|
Please let me remind all of you--this
material is copyrighted. Though partially funded by NASA, it is still a private
site. Therefore, before using our materials in any form, electronic or otherwise, you need
to ask permission.
There are two ways to browse the site: (1) use the search button above to find specific materials using keywords; or,
(2) go to specific headings like history, principles or careers at specific levels above and click on the button.
Teachers may go directly to the Teachers' Guide from the For Teachers button above or site browse as in (1) and (2).
Pour the colored alcohol into the barometer tube, filling it completely. Pour the remaining colored alcohol into a beaker. Place a finger over the open end of the tube and invert the tube, lowering it carefully into the beaker containing the remainder of the colored alcohol. Clamp the tube upright on the stand.
Mark a scale of inches and half inches on the cardboard, and label it from 24 to 36 inches. With the yardstick, measure the actual height of the colored alcohol column and attach the scale to the proper spot on the tube.
Watch the day-to-day variations in the height of the colored alcohol. Record your readings. Compare them with radio and newspaper reports of local barometric pressure conditions.
Determine a scale that will represent both the height of mercury of a regular barometer and the pressure of the air on the fluid.
NOTE: Be very careful that the mercury does not come in
contact with any jewelry you may be wearing.
Send all comments to email@example.com
© 1995-2017 ALLSTAR Network. All rights reserved worldwide.
Updated: March 12, 2004