The Weekly Newspaper serving the citizens of Morenci, Mich., Fayette, Ohio, and surrounding areas.

  • Front.cheers
    MACEE BEERS joins other Fayette Elementary School students for the annual Mini-Cheer performance during the half-time break at the basketball game.
  • Family.3.wide
    CHILDREN at Stair District Library’s Family Story Time toss scarves into the air during an activity. The evening program provided a mix of stories, songs, dancing, crafts and snacks Monday evening. The program is offered at 5:30 p.m. every Monday for five more weeks. The program is designed for three to five year olds and their family.
  • Front.newpaper.2
    THE INTERVIEW—Evelyn Joughin (right) records the interaction with an iPad while Jack Varga, next to her, asks questions of Morenci Elementary School principal Gail Frey. Morenci senior Sam Cool (standing) listens. Cool serves as the editor for the newspaper written by members of Mrs. Barrett’s second grade class.
  • Front.code.2
    WRITING CODE—Brock Christle (left), a Morenci fifth grade student, takes a look at the progress being made by fourth grader Anthony Lewis. Libby Rorick, a sixth grade student, is next in a line of girls trying out the coding tutorials. This year marked Morenci’s second year of participation in the Hour of Code project.
  • Front.skelton.vigil
    MORENCI’S three Skelton brothers were remembered with both tears and laughter last week during a candlelight vigil at Wakefield Park. Several people came out of the crowd to give their recollection of the boys who have now been missing for five years.
  • Front.gym.new
    REMIE RYAN (left) tries to dodge the foam wand held by Hayden Bays during physical education class at Morenci Elementary School. In the background, Lauryn Dominique and Brooklyn Williams stay clear of the tag. Second grade students were working on cardiovascular health on the first day back from vacation. For the record, Safety Tag is a very difficult sport to photograph.
  • Front.lift
    MORENCI student Dalton McCowan puts everything into a dead lift attempt Saturday morning during the Wyseguy Push/Pull event. Lifters helped raise more than $1,600 for the family of the late Devin Wyse, a former Morenci power-lifter who graduated last year. Commemorative T-shirts are still available by contacting teacher Dan Hoffman.

Studying the Cartesian Diver 2.25

Written by David Green.

It was a classic science experiment that Morenci eighth grade students tackled last week in Mr. Hoffman’s class. cartesian.diver2.jpg

Taking principles developed by Greek philosopher Archimedes more than 2,000 years ago, students constructed their own Cartesian Diver to study the relationship between buoyancy and density.

The Cartesian Diver is named for 17th century French scientist René Descartes although his connection to the experiment has never been found. A more correct name might be the Maggiotti Diver since it was Galileo’s student Raffaelo Maggiotti who claimed to have invented the device.

In the modern version of the experiment, students take a plastic pipette (medicine dropper) and thread a metal nut onto the stem. This is the diver.

The diver is partially filled with water—just enough so it barely floats upright in a container of water.

The diver is inserted into a soft drink bottle of water and the bottle is capped.

Now the fun begins.

When the bottle is squeezed, the diver dips down deeper into the bottle. When pressure is released, it quickly rises back to the top.

Why does it happen? Added pressure on the bottle compresses the air in the diver. It becomes more dense and sinks in the water.

It’s the same principle fish use to sink or float when a muscle squeezes or relaxes around an air sac. Similarly, submarines can be made to rise or sink by pumping water in and out of tanks.

Weekly newspaper serving SE Michigan and NW Ohio - State Line Observer ©2006-2016