Bathymetry
Oceans
Exploration
Picture This!
Grab Bag
100
deepest place in Earth's crust
What is a trench?
100
third largest ocean
What is the Indian Ocean?
100
this voyage marks the beginning of modern oceanography
What is the HMS Challenger expedition?
100
item J
What is a trench?
100
study of the physical characteristics, chemical characteristics, and life forms of the oceans
What is oceanography?
200
flattest regions on Earth
What are the abyssal plains?
200
largest ocean; contains more than half of Earth's global ocean water
What is the Pacific?
200
DAILY DOUBLE
a class of submersible that remains connected to a research ship when in use
What is a bathysphere?
200
item A
What is the continental shelf?
200
covers more than 2/3 of Earth's surface
What is the global ocean?
300
flat-topped seamount
What is a guyot?
300
extends from Antarctica's coast to the 60 degree S latitude
What is the Southern Ocean?
300
used in sonar to measure depth of the ocean floor
What are sound waves?
300
item F
What is abyssal plain?
300
the unique quality of the mid ocean ridge at Iceland
What is it rises above sea level (above the surface of the ocean)?
400
a seamount that rises above sea level (ocean's surface)
What is an island?
400
the second-largest ocean
What is the Atlantic Ocean?
400
these underwater vessels (manned, unmanned, autonomous, and tethered) enable oceanographers to perform tasks on the ocean floow
What is a submersible?
400
item G
What is a mid ocean ridge?
400
where most mid ocean ridges form 
What are fracture zones?
500
reason why an atoll eventually becomes a guyot
What is wave erosion?
500
the smallest ocean
What is the Arctic Ocean?
500
name two types of research tools used by scientists to study the deep ocean
What are research vessels, bathyscaphes, bathyspheres, ROVs, and sonar?
500
item B
What is the continental slope?
500
A large body of saline (salt) water that may be surrounded by land
What is a sea?