Rocks become smoother as rough and jagged edges break off. Students run a model of this process by shaking sugar cubes and gravel together in a plastic container. The sugar cubes become smoother as their edges break off when they collide in the container.
By Diane Alter, Contributing Writer, Money Morning -. Gold prices today (Friday) climbed $18.90, or $1.66%, at $1,158.90, which was a six-week high for the precious metal. Gold prices today climbed after the release of the latest Federal Open Market Committee (FOMC) minutes.
Gold started the year just above $1,400 an ounce. Gold prices first crossed the $1,900 mark in after-hours electronic trading Monday. Early Tuesday, prices hit an all-time high of $1,917.90 an ounce, before pulling back to about $1,880. Gold could keep working its way higher, but it is starting to look a bit bubbly, said Matt Zeman market strategist at Kingsview Financial in Chicago.