Question 1
Which one of the following statements about mid-ocean ridges is false?
◦ Sediments include thick siliceous ooze deposits and sandy turbidite beds.
◦ Terrigenous sediment coverings are very thin or absent.
◦ They are where young lithosphere is added to the edges of spreading, oceanic plates.
◦ They are sites for submarine eruptions of basaltic lava.
Question 2
"Black smokers" are associated with ________.
◦ hot water
◦ oceanic ridges
◦ mineral-rich waters
◦ all of these