Ocean Floor
The use of reflected sound waves to determine distances or to locate objects.
What is echolocation?
The measure of the amount of salt dissolved in liquids.
What is salinity?
Marine organisms that can swim freely.
What are nekton?
An area where fish and other seafood can be caught can harvested for commercial purposes.
What is a fishery?
The process of removing salt from ocean water.
What is desalination?
The two ways that submarines dive and rise to the surface.
What is flood tanks with seawater to dive and force water out to rise?
The highest and lowest part of the wave.
What are the crest (highest) and trough (lowest)?
Brackish water forms here.
What is where freshwater and saltwater meet (estuaries)?
One example of a nonrenewable ocean resource.
What are oil and natural gas?
What is the Sun, the Earth, and the Moon form a right angle?
The four layers of the ocean from the most shallow to the deepest.
These three celestial objects are lined up to create a spring tide.
What are the Sun, the Moon, and Earth?
One way that algae helps coral and one way coral helps algae.
What are...
Algae helps coral by providing food for it through photosynthesis and capturing food with tentacles.
Coral helps algae by making waste products that algae uses to grow?
Two examples of renewable ocean resources.
What are fish, any seafood, and salt?
Three types of waves.
What are ripples, swells, breakers, whitecaps, and tsunamis?
The differences between oceanic and continental crust? Two facts each.
What is that...
Continental crust is thicker, less dense and mostly granite and...
Oceanic crust is thinner, denser, and mostly made of basalt.
Three steps explaining how waves form.
What are...
1. Wind blows across the water.
2. Friction between wind and water forms a wave.
3. Small ripples form.
4. This builds to larger waves.
5. Wave energy moves forward.
Four main parts of seaweed.
Three ways that the ocean can be used to generate energy.
What are wave turbines, buoy generators, tidal turbines, wind farms, and dam-like structures?
Three different types of marine ecosystems.
What are the open ocean, intertidal zones, estuaries, coastal wetlands, and coral reefs?
The five major oceans from largest to smallest.
What are the Pacific, the Atlantic, the Indian, the Southern, and the Arctic Oceans?
The ways that salinity and temperature affect density currents.
What is that salty and cold water are denser than less salty water and warm water?
As salty water and cold water sink, this pushes the less salty water and warmer water up.
Evaporation at the top causes the cycle to repeat.
Three ways that living in water supports plants and animals.
What are supporting the bodies of animals, helping plants without stiff stems reach sunlight, and dissolving gases and minerals?
Five different ways that the ocean is important.
What are energy, food, jobs, transportation, recreation, natural resources, habitat for life, climate regulation, oxygen, and mental health?
Five main features of the ocean floor.
What are continental shelves, continental slopes, abyssal plains, mid-ocean ridges, seamounts, volcanic islands, ocean trenches, and guyots?