SME
Grade 12 Science · Problem type
Sinks or rises?
Use this for “Why does warm air rise at the equator?” and “Why does water sink near Greenland?”
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Does it sink or rise compared with what is around it?
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Assumptions
•
Colder and saltier water is denser; warmer and fresher water is less dense.
•
Air works the same way: cold air sinks and warm air rises.
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Use this for “Is the tide a spring or a neap tide at the first-quarter Moon, and how big is the range?”
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Use this for “Why is the current on the west side of an ocean basin warm?” and “What drives the deep conveyor?”