Outline the many different experimental samplings conducted during the Challenger expedition. What will be an ideal response?
The Challenger expedition collected samples from the deep ocean using a steam
winch and mechanical grabs and nets. They conducted 492 deep soundings with
mechanical grabs and nets at 362 stations (including 133 dredgings). With each hoist,
animals new to science were strewn on the deck; in all, staff biologists discovered
4,717 new species. The scientists also took salinity, temperature, and water-density
measurements during these soundings. Each reading contributed to a growing picture
of the physical structure of the deep ocean. They completed at least 151 open-water
trawls and stored 77 samples of seawater for detailed analysis ashore. The expedition
collected new information on ocean currents, meteorology, and the distribution of
sediments; the locations and profiles of coral reefs were charted. Thousands of
pounds of specimens were brought to British museums for study. Manganese
nodules, brown lumps of mineral-rich sediments, were discovered on the seabed,
sparking interest in deep-sea mining.
You might also like to view...
Compare and contrast Himalayan- and Andean-type orogenies. What will be an ideal response?
Which of the following statements regarding coal is false?
a. Coal combustion results in acid rain and mercury pollution. b. Coal provides energy at a higher cost than oil shale. c. Coal mining results in acid mine drainage. d. Coal deposits are known in every geological period since the Devonian. e. Electrical utilities consume about 90% of U.S. coal production.
Describe the important aspects of the formation and breakup of Pangaea
What will be an ideal response?
The Latin American region has held onto its indigenous religions, which remain the dominant faith today
Indicate whether the statement is true or false