Super Quiz: Things You Cannot See

1. The sensation perceived by the sense of hearing.

2. The natural attraction between bodies, such as an object falling to the ground.

3. The life-supporting component of the air.

4. an elementary particle with a negative charge.

5. a disease-causing agent such as covid-19.

6. Microscopic single-celled organisms, lacking a distinct nucleus, that can cause diseases.

7. a form of matter thought to account for approximately 85% of the matter in the universe.

8. a compass makes use of this force.

9. This type of light wavelength used in medicine penetrates the skin and forms an image.