Across
- 5. to put air or a gas into something, such as soil or a liquid
- 6. a bright display of fireworks
- 7. a mental disorder that makes people have a strong desire to set fires
- 10. strengthening the heart and lungs by making them work hard for several minutes or more; using oxygen
Down
- 1. an area of study that deals with the location of countries, cities, rivers, mountains, lakes; the natural features such as rivers, mountains, of a place
- 2. of, relating to, or using the natural heat produced inside the Earth
- 3. relating to or consisting of fragments of rock erupted by a volcano
- 4. of or having a shape that reduces the drag from air moving past
- 8. a rock containing a cavity lined with crystals or other mineral matter
- 9. performed in the air; performed by an airplane