Ch. 13/14 Science Vocab Words

1. The natural environment in which a living thing gets all that it needs to live.
2. A property of matter representing the mass per unit volume.
3. A wet, swampy area that is often flooded with water.
4. A system that uses underwater sound waves to measure distance and locate objects.
8. A narrow stream of water that breaks through sandbars and rapidly back into deeper water.
10. The flat or gently sloping land that lies submerged around the edges of a continent and that extends from the shoreline to the continental slope.
13. A disturbance of wind patterns and ocean currents in the Pacific Ocean that causes temporary climate changes in many parts of the world.
14. Microscopic floating organisms that live in water and, like plants, convert sunlight and carbon dioxide into food.
17. A shoreline area where fresh water from a river mixes with salt water from the ocean.
18. The vertical movement of deep water up to the surface.
19. A tide of small range occurring during the first- and third- quarter phases of the Moon.
20. A tide of large range occurring during the new and full moons, resulting in an extra-high tidal bulge and an extra-low tidal dip.
21. The difference in height between high tide and low tide.

1. An opening in the sea floor from which heated water rises and mixes with the ocean water above.
5. A large community of kelp, a type of seaweed that can attach to the ocean floor.
6. The movement of water from the surface to greater depths
7. A mass of moving ocean water.
9. The measure of the amount of dissolved salt contained in water.
11. The narrow ocean margin between the high-tide mark and the low-tide mark.
12. The overall direction and movement of water as waves strike the shore at an angle.
15. The periodic rising and falling of the water level of the ocean due to the gravitational pulls of the Moon and the Sun.
16. The portion of animals that are caught in a net and then thrown away as unwanted.