the Space Between Bunches
Electrons in the ALS are grouped into bunches as they go around the
storage ring. It's not very hard to calculate how far apart they are,
just like an accelerator physicist might do, and the answer may surprise
Using straws, students can build models of different crystal structures
and feel which structures are inherently stronger.
Use paper clips to make models of different types of polymers. This
activity helps students visualize how polymer molecules are arranged
to give materials different characteristics.
Fiber Orientation Activity
Students can explore how the orientation of fibers affects the strength
of common materials like paper and plastic.
Explore the results of electrostatic attraction in cellophane tape,
and see how electrostatic effects can bind atoms together.
Hydrogen Bonding Demonstrations
How can a paper clip float on water? Look at the real thing and see
what's happening on the surface of the water. Try filling a cup to the
rim to investigate another effect of hydrogen bonding. Test the interaction
between an electrostatically charged comb and flowing water to see yet
Use colored filters to investigate how materials can absorb light of
some colors and allow other colors to pass through.
There Se in Your Vitamins?
Check out how much selenium a typical vitamin gives us, and compare
this to how much selenium we need and how much is too much.
Use a coffee filter to model what happens in an evaporation pond when
salty irrigation water drains into it.
Your Own Marsh!
Make your own marsh in a test tube. Students can see how the elements
in a marsh change forms as they gain and lose electrons.
About a Glass of Diffused Vegetable Dye?
Watch diffusion in a glass of water to see how quickly and thoroughly