The study of Earth's ocean
Oceanography
The scientists who study the ocean
Oceanographer
Name 5 world oceans
Pacific, Atlantic, Indian, Southern, Arctic
The crust that made of granite. It is 30-50 km thick.
Continental crust
The crust that made of basalt. It is 5-10 km thick.
Oceanic crust
New oceanic crust forms at cracks
Mid-ocean ridge
A deep canyon forming between crusts in V-shape when a section of crust moves under another
Ocean trench
The use of sound wave to find the distance to the bottom
Echolocation
Shallow underwater extension of continent
Continental shelf
Steeply slanted area between shelf and ocean floor
Continental slope
Flat area underwater with sediment
Abyssal plain
An underwater volcanic mountain
Seamount
A volcano above the ocean surface
Volcanic island
An underwater volcanic mountain with flat top
Guyot
