Across
- 6. Lowland area between hills or mountains.
- 7. Moment when the sun disappears below the horizon.
- 8. Earth's natural satellite, seen in the night sky.
- 9. Moment when the sun appears above the horizon.
- 11. Large area covered with trees and undergrowth.
- 12. Vast expanse of saltwater covering the Earth.
- 14. Natural flowing watercourse, often with banks.
Down
- 1. Tall, rugged landform with peaks and slopes.
- 2. Dry, arid region with little or no vegetation.
- 3. Vertical flow of water from a height.
- 4. Multicolored arc in the sky after rain.
- 5. Slow-moving mass of ice formed from snow accumulation.
- 8. Grassland area with wildflowers and low vegetation.
- 10. Luminous celestial object visible in the night sky.
- 13. Sandy or pebbly shore by the ocean or lake.