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.
goldprice.org displays the spot gold price (BID). Which is the price of gold that buyers are willing to pay for gold in the 24 Hour Spot Gold Market. This price is based on 9999 pure gold or 24k gold. 24k gold is known as pure gold. 24k is the most pure form of gold.