General Knowledge, Science & Math

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Across
  1. 1. The mathematical constant represented by the Greek letter pi
  2. 8. The largest planet in our solar system.
  3. 9. The largest ocean on Earth.
  4. 10. The result of multiplying any number by zero.
  5. 12. The basic structural and functional unit of all living organisms.
  6. 13. The gas that humans breathe in to survive.
  7. 16. The closest planet to the Sun.
  8. 17. The currency used in Japan.
Down
  1. 1. An optical instrument used to view very small objects, like bacteria.
  2. 2. A 90-degree angle is called a ___ angle.
  3. 3. The value of $x$ if 2x + 5 = 15
  4. 4. The ability or capacity to do work.
  5. 5. A nutrient that is essential for building and repairing body tissues.
  6. 6. The process by which green plants use sunlight to synthesize food.
  7. 7. The capital city of Malaysia.
  8. 9. The main organ used for breathing in humans.
  9. 11. An instrument used for measuring temperature.
  10. 14. A sport played with a racquet and a shuttlecock.
  11. 15. A straight line from the center of a circle to its perimeter.
  12. 17. The largest mammal in the world, found in the ocean.