Aquatic Ecosystems Vocabulary Quiz

What does the term "aquatic" refer to?

• Living in the desert

• Relating to water and aquatic ecosystems

• Found only in freshwater lakes

• Relating to land animals

Why is dissolved oxygen important in water?

• It makes the water look clearer

• It helps aquatic life survive

• It increases the salinity of water

• It causes water to freeze faster

What does salinity measure?

• The temperature of water

• The amount of dissolved salt in water

• The depth of the ocean

• The number of fish in an area

What does the pH scale measure?

• The salinity of water

• The amount of dissolved oxygen in water

• How acidic or basic water is

• The depth of the ocean

What is upwelling?

• A process where deep, nutrient-rich water rises to the surface

• The movement of waves toward the shore

• A sudden increase in ocean temperature

• The process of tides going in and out

What is a wetland?

• A desert with occasional rainfall

• A land area covered by water for part or all of the year

• A deep part of the ocean with no sunlight

• A dry land ecosystem

What is the intertidal zone?

• The area of the ocean where no sunlight reaches

• The open ocean where large fish live

• The area between high and low tide where organisms must adapt to changing conditions

• The deep ocean floor

Which part of the ocean is known as the coastal ocean?

• The deep, dark part of the ocean

• The shallow area near the shore, including the continental shelf

• The open ocean with no marine life

• The ocean floor covered in ice

What is the photic zone?

• The deepest part of the ocean where no light reaches

• The area where sunlight penetrates, allowing photosynthesis

• The part of the ocean where no organisms live

• The layer of water where no oxygen is present

What is the twilight zone (disphotic zone)?

• A deep part of the ocean with dim light but no photosynthesis

• The area where sunlight is strongest

• A place where corals thrive due to bright light

• The top layer of the ocean where plankton live