Ocean Floor
This underwater feature is a long chain of mountains formed by tectonic activity.
mid-ocean ridge
Ocean water is a mixture of these phases of matter.
solids, liquids, and gases
The rise and fall of ocean water caused by the moon’s gravity is called this.
tides
Fish use this organ to breathe underwater.
gills
This is the deepest part of the ocean floor, often narrow and very steep.
ocean trench
dissolved
This large, powerful wave is usually caused by underwater earthquakes.
tsunami
An organism that makes its own food using sunlight is called this.
producer
Flat, wide areas of the ocean floor covered in sediment are called these.
abyssal plains
This property determines whether an object will float or sink in ocean water.
density
Ocean currents are mainly caused by this.
wind
Give an example of a swimming organism in an ocean environment.
fish, whale, shark, dolphin, octopus, etc.
This part of the continent extends underwater before dropping off into the deep ocean.
continetinal shelf
The amount of salt in ocean water is known as this.
salinity
The powerful, warm Atlantic Ocean current that flows along the US east coast and crosses to Europe.
Gulf Stream
Give an example of a floating organism in a marine environment.
plankton, algae, jellyfish