Across
- 3. A device that detects an external factor, such as temperature
- 5. An efficient form of light bulb technology
- 6. Device that uses resistance to measure temperature
- 9. A device that restarts the heart
Down
- 1. An experiment to measure how one variable affects another
- 2. A form of radiation that is invisible to humans, used in an oxygen sensor
- 4. A sensor that detects light and can be used in the home to automatically control lights
- 7. Device that monitors temperature and keeps it constant
- 8. A form of radiation that can pass through skin but not bone