Across
- 2. a room of glass that traps lots of sun
- 3. an umbrella used to protect you from the sun
- 5. a tool used for measuring heat
- 7. the day of the year when there are equal amounts of day and night
- 10. another way to say "a sailor of the sea"
- 12. the science of prolonging life (making it longer)
- 14. measures the intensity of light
- 15. used to measure small sounds so they can be heard
- 16. uses light to create pictures or images
Down
- 1. belonging to an area by birth
- 3. if something requires light to live
- 4. another name for someone who sleepwalks at night
- 6. the day of the year when there is the most sun of the year
- 8. a device used to control the heat in a person's house
- 9. a star-shaped symbol used as a reference symbol
- 11. shining at night, phosphorescent
- 13. heat or energy created by the earth
