Bill Nye explains Dollar coins

Bill Nye explains Dollar coins

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  • Hey guys!  I'm Bill Nye! Today I'm gonna be telling you about the Sacagawea dollar coin! The coin is a gold color but contains no actual gold metal. It is made of an alloy, or mixture of metals, that contains copper (found in Chile), zinc (found in Australia), manganese (found in South Africa), and nickel (found in Russia)!
  • All of these metals are elements known as transition metals on the periodic table. Their symbols are Cu (atomic number/mass:29), Zn (atomic number/mass:30), Mn (atomic number/mass:25), and Ni (atomic number/mass:28). The added value of all the metals in one coin is $0.0526863.
  • The Sacagawea dollar coin was designed by Glenna Goodacre in 2000. The front of the coin features a picture of Sacagawea and the back had an eagle on it from 2000-2008 and now shows different aspects of Native American culture. 
  • This building is one of 4 mints in the U S. The mints make all the coins we use in our daily lives. Metals are first extracted from the ore that they are in and then melted down. The metal is shaped into blank coins, or blanks.
  • When new coin designs are made there is a process to get that design onto the coin. The design is first drawn out and then sculpted into clay. This model is then shrunk down to the size of the coin blanks and made into multiple other models called planchets. Lastly, the blanks are stamped with the planchets and the design is imprinted on them.
  • A dollar coin has a life cycle of about 25 years. Dollar coins can also be completely recycled by melting them down and reusing the metal to create more coins. Now you know a ton about the Sacagawea dollar coin. Well that's our show, thanks for watching! See ya!
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