Green Group April 28th

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Across
  1. 4. This device allows you to see incredibly tiny things.
  2. 5. If I cut a circle in half I am measuring its ______.
  3. 7. Hercules is a character from Greek _______.
  4. 10. A book written about someone by themselves.
  5. 14. The study of the origin of words
  6. 15. This is a book written about someone important.
  7. 17. The total distance added up around a shape.
  8. 18. This can help you see far away things like the stars.
  9. 20. This measures the speed of a vehicle.
  10. 21. There are 1000 of these in a meter.
  11. 22. This device is how you see in a submarine.
  12. 23. Heat energy from the Earth.
Down
  1. 1. This device measures air pressure.
  2. 2. This is a scientific term for heat.
  3. 3. The scientific study of living things.
  4. 6. This is the scientific study of animals.
  5. 8. You can use this container to keep your lunch warm all day.
  6. 9. This can be used to control the temperature indoors.
  7. 11. 1000 meters.
  8. 12. The mathematical study of shapes.
  9. 13. This measures the temperature.
  10. 16. Mountains are a form of physical ______.
  11. 19. This is the study of the Earth and its processes like volcanoes and earthquakes.