STEM Crossword Puzzle

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Across
  1. 2. The outermost layer of the atmosphere is called the ____sphere
  2. 4. The_______valve is also known as the bicuspid valve.
  3. 5. The capacity to do work
  4. 7. A polygon with five sides is called a_______?
  5. 9. A large mass of stony material
  6. 11. The five states of matter are solid, liquid, gas,bose einstein condensates and____?
  7. 13. Consists of all of the contents outside of the nucleus and enclosed within the cell membrane of a cell.
  8. 14. He is the father of Biology
  9. 17. How many times does a secant line intersect a curve?
  10. 18. Produces male reproductive cells (pollen)
  11. 20. The smallest planet in the solar system
Down
  1. 1. The basic unit of life
  2. 3. The artist who painted the painting "Starry Night" is ____ Van Gogh
  3. 6. The respiratory system is a series of organs responsible for taking n oxygen and expelling carbon dioxide
  4. 8. Where egg cells of females are produced
  5. 10. The mouth of the volcano is called?
  6. 12. The answer in addition is called?
  7. 15. A triangle that has no equal sides is called a ____ triangle
  8. 16. It is the standard unit of power
  9. 19. An angle with a measurement of 90 degrees is called a ____ angle?