Author Question: Which of the following accurately describes 18O/16O ratios of ice sheets? A) During warmer ... (Read 158 times)

imanialler · **on:** Jul 14, 2018

Which of the following accurately describes 18O/16O ratios of ice sheets?

A) During warmer periods, 18O evaporates more readily and therefore the 18O/16O ratio is higher.
B) The higher the ratio of ice core 18O/16O, the cooler there temperatures because the 18O will be locked up in ice sheets.
C) During periods of colder temperature, the 18O/16O ratio is higher because only the 18O isotope is being evaporated.
D) During warmer periods, 16O evaporates more readily and therefore the 18O/16O ratio is significantly lower than colder periods.

Question 2

Cyclones in the southern Indian Ocean usually occur between

A) November and May.
B) April and December.
C) June and October.
D) August and December.