Many of these labs are useful to substitute for activities in the class that are too costly, dangerous, or time consuming.I have assigned grades to some that I've explored in detail.Context This lesson was developed by the Challenger Center as part of NASA's MESSENGER Mission, of which Science Net Links is a partner.Radiometric Dating Atom Decay and Half-Life Simulation.Topics Plate Tectonics Crust Lithosphere Mantle Density Buoyancy Earth Science Description Explore how plates move on the surface of the earth.
The primary sources of the Smithsonian document the history of art, culture, music, design, flight, space exploration, science and technology, landscapes and gardens, and native cultures in the United States, as well as the long history of the Smithsonian itself.
Click Link: Alpha Particles = 2 protons and 2 neutrons bonded together into a particle identical to a helium nucleus.
As alpha particles are released during radioactive decay, the mass of the atom decreases by 4, and the atomic # decreases by 2.
The Smithsonian Online Virtual Archives (SOVA) provides integrated access to descriptions and detailed inventories of thousands of primary resource collections maintained by archival units across the Smithsonian.
Archival finding aids, also sometimes called collection guides, are the key to unlocking information in SOVA.