Across
- 2. One high and one low tide each day.
- 5. A species that is not naturally found in an area. They migrate into an ecosystem or are deliberately or accidentally introduced into an ecosystem sometimes by humans.
- 9. When a wave bounces off of a surface.
- 11. The variety of life in the world or in a particular habitat or ecosystem.
- 14. Two high and two low tides each day, however the sizes of the tides are not the same, with one high and one low being larger than the other.
- 16. A stable, mature community that undergoes little or no change in species over time.
- 17. When the gravitational pull of the sun works perpendicular to the direction of pull from the moon, causing a reduction in the tidal shift between high and low tide.
- 18. The first species to populate an area.
- 19. When a wave bends (slows down and changes direction) as it goes through shallower water.
- 20. The effect of Earth's rotation on the direction of winds and currents.
Down
- 1. Species that normally live and thrive in a particular ecosystem.
- 3. Type of succession that occurs in an area that was only partially destroyed by disturbances, starts with soil.
- 4. Succession that occurs on surfaces where no soil exists.
- 6. Large system of circulating ocean currents, particularly those involved with large wind movements.
- 7. The tilting of the Earth, combined with its mostly round shape, causes light to hit at different angles.
- 8. When the gravitational pull of the sun combines with that of the new or full moon to cause a more drastic shift between high and low tides.
- 10. A current that moves in a circular motion because there is a temperature or density difference within the materials.
- 12. Two high and two low tides each day, and the highs are roughly the same height, with the lows being roughly the same depth.
- 13. Ability of a surface to reflect light.
- 15. Non-native species that enter new ecosystems and multiply, harming native species and their habitats.