Found 0 - 10 results of 67 programs matching keyword "iron content in food and black sand"
For thousands of years, Indian women have created these elaborate geometric designs using a variety of natural materials—flowers, spices, sand, and natural pigment—to mark auspicious occasions, celebrations, and milestones.
Project: Arts at the Exploratorium | Browse All
Date: April 23, 2013
Format: Event
Category: Popular Culture
Subject(s): art Join Exploratorium educator Ken Finn as he unlocks the mystery behind the black sand (a.k.a. magnetite) at Ocean Beach. This piece explores the origin of magnetite in the Sierra Nevada mountains, its journey down the Sacramento and San Joaquin rivers to the Bay, and the interesting physical properties of this mineral, plus some fun things you can do with it.
Project: Science in the City | Browse All
Date: August 9, 2011
Format: Expedition
Category: Everyday Science
Subject(s): General Science Framing of the Exploratorium's Observatory Building, the only completely new construction at at the piers, began in April 2011. Iron workers placed various sizes of steel beams in piles around the concrete base of the Observatory. Then, while a crane raised and held each beam aloft, the workers used metal spikes to line up the holes of the beams and inserted bolts, tightening them down to tie the structure together. Because the Observatory Building is less than two stories tall, the iron workers were allowed to shimmy across the beams without harnesses. Once this process was finished, the beams were plumbed and welded together.
Project: Exploratorium at the Piers | Browse All
Date: July 14, 2011
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): General Science
