Across
- 4. When particles are packed tight, matter is ______.
- 5. Not matter, can pass through or reflect off of things
- 6. Reflects light.
- 7. what we used to bring light into the model.
Down
- 1. When particles are spread out and moving fast, matter is a ___.
- 2. A representation we use for explaining a phenomenon
- 3. Your teacher's last name.
- 6. Makes up everything we can touch.
- 8. When particles are spread out a little, matter is _____.
- 9. Transmits light.