European Ocean Explorers
HMS Challenger
Deep Ocean Exploration
The Ocean Floor
Ocean Facts
100
This county was the center of ocean exploration in Europe during the 1400-1500s
What is Portugal?
100
This is the country which funded the HMS Challenger
What is England?
100
This technology uses reflecting sound waves to determine depth of the ocean floor
What is SONAR?
100
These underwater mountain ranges are the largest features on the earth
What are mid-ocean ridges?
100
This process which occurs at mid-ocean ridges involves the formation of new seafloor
What is seafloor spreading?
200
This explorer accidently sailed to south america on a western route to india
Who is Christopher Columbus?
200
This is the technique of finding ocean depth by measuring the length of a weighted line lowered to the ocean floor
What is sounding?
200
At over 29,000 this is the deepest feature on the Earth
What is the Mariana Trench (Challenger Deep)?
200
These features in deep ocean basins are the flatest features on the earth
What are abyssal plains?
200
This is the percentage of the earth's total water found in the oceans
What is 97%?
300
Although he didn't survive the trip, this explorer led the first expedition to circumnavigate the earth
Who is Ferdinand Magellan?
300
This is a device consisting of a metal net on the end of a rope which was used to collect sediment on the ocean floor
What is a dredge?
300
This was the first manned ship to reach the deepest point on the Earth
What is the Trieste?
300
This is the term for a shallow, flat extenstion of continental crust along some coastlines
What is a continental shelf?
300
This is the mapping of underwater surfaces by recording depths
What is bathymetry?
400
This explorer was the first to reach North America, landing in Greenland and Newfoundland in A.D. 1000
Who is Leaf Erickson?
400
This measurement of depth, a conversion of 6 feet, originated from a sailor's arms length when lowering rope into the ocean.
What is a fathom?
400
This is a self-propelled mini-submarine used to explore the ocen floor
What is a bathyscaphe?
400
These features are underwater volcanoes
What are seamounts?
400
These are the five oceans from greatest in size to smallest
What is Pacific, Atlantic, Indian, Southern, Arctic?
500
This explorer setup several schools in Portugal which specialized in teaching captains about navigation
Who is Prince Henry the Navigator?
500
This is the device the HMS Challenger used to record temperature at different depths throughout the ocean
What is the Miller-Casella Thermometer?
500
These are the two men to first reach the deepest location on earth
Who are Jacques Picard and Don Walsh?
500
This is the oldest age of the ocean floor
What is 200 million years?
500
These are the two ways which volcanoes can form in the ocean
What are subduction zones and hot spots?
M
e
n
u