Across
- 2. Strengthening the heart and lungs
- 5. An area that you study on earth
- 6. Rock from volcano
- 7. A rock with a cavity
- 9. A mental disorder
- 10. Performed in the air
Down
- 1. Shapes that reduces drag from wind
- 3. A bright display of fireworks
- 4. To put air or gas into something
- 8. Natural heat produced from the earth