5 Written questions
5 Matching questions
- Abyssal Zone
- Neritic Zone
- a A method of desalination where water is frozen. Then the first ice crystals that form do not contain salt. The ice can be removed and melted to obtain fresh water.
- b Has no sunlight because it begins at a depth of 4,000 meters and extends to a depth of 6,000 meters.
organisms that live there: sponges and worms
- c All organisms that swim actively in open water, independent of currents
- d The area of the pelagic zone above the continental shelves. Has abundant sunlight, moderate temperatures, and relatively low water pressure.
- e The movement of deep, cold, and nutrient-rich water to the surface.
5 Multiple choice questions
- Potato-shaped lumps of minerals that are found on the abyssal floor of the ocean.
- Dissolved solids that make up about 3.5% of the mass of ocean water. These dissolved solids give the ocean its salty taste.
- Begins at the continental slope and extends to a depth of 4,000 meters.
animals that live there: octopi, sea stars, and brachiopods.
- The shallowest benthic zone that lies between the low-tide and high-tide lines.
- A popular method for desalinating ocean water. It includes the use of special membranes that allow water under high pressure to pass through and that block the dissolved salts.
5 True/False questions
Phytoplankton → Microscopic plants in the ocean that provide food to many of the ocean's organisms.
Salinity → A measure of the amount of dissolved salts in a given amount of liquid. It can be written as salinity = 35 parts per thousand, or 35%.
Plankton → All organisms that swim actively in open water, independent of currents
Density → The ratio of the mass of a substance to the volume of the substance; commonly expressed as grams per cubic centimeter for solids and liquids and as grams per liter for gases.
Benthos → Organisms that live at the bottom of oceans or bodies of fresh water.