Across
- 1. to use light to create images on a lens; an image made this way
- 4. a system for sending messages over wires using Morse code
- 5. plants’ method for making their food using air and water; activated by sunlight
- 6. a flower that turns toward the sun
- 7. a device for sending sounds over long distances
- 8. a tendency to turn toward heat
- 9. an electronic system for sending sound and images over a long distance
- 10. math involving the measurement of angles, lengths, etc.
Down
- 1. a person who seeks wisdom or enlightenment
- 2. a historic city in Pennsylvania; home of the Liberty Bell
- 3. the measurement of people’s vision to fit them for glasses
- 5. a written symbol for a sound