Across
- 2. the work that a certain force (gravitational, electromagnetic,) can do.
- 4. smallest unit into which matter can be divided without the release of electrically charged particles.
- 5. energy that comes from a source and travels through space.
Down
- 1. energy that includes radio waves, microwaves, infrared light, and more
- 3. the production and discharge of something, especially gas or radiation.