1. major oceanic surface gyres are:
a) caused by global winds; b) large circular system of ocean surface currents;
c) affected by the coriolis effect; d) all of these; e) none of these

2. today we have a full moon with a specific type of tide. what kind of tide will we have approximately two weeks from today?
a) semi-diurnal tide; b) spring tide; c) neap tide; d) lunar tide; e) mixed tide

3. what is a tsunami? why do most of these occur in the pacific? (open question.)