Across
- 4. water vapor cools and forms rain drops
- 6. helium which is inside some balloons which you breath in makes your voice squeaky
- 7. the substance inside florescent tubes and lamps
- 9. a chair you sit on
Down
- 1. water on the ground turns into ice because of the temperature going into negatives
- 2. water on the stove slowly turns into steam
- 3. ice turning into water because of the sun
- 5. frost frozen on the window of your room
- 8. gasoline you put into your car