Across
- 3. – a small, useful machine or device
- 4. - happening from time to time
- 6. – a place where scientists work and do experiments
- 7. – a test to find out or prove something
Down
- 1. – powered by electricity, a form of energy caused by the motion of electrons and protons
- 2. – a sound, motion, or other sign that sends a message
- 3. – extraordinary intellectual power, especially seen in creative ability
- 5. – an original device, system, or process