1. low, flat or almost level land   tributary   plain   strait   beach   Hint Half-n-half Clue   2. group of islands found close together in the sea   peninsula   desert   archipelago   plain   Half-n-half Clue   3. small river flowing into a bigger main river   tributary   island   iceberg   estuary   Half-n-half Clue   4. thick mass of floating ice in the sea   delta   oasis   iceberg   cape   Half-n-half Clue   5. large area of sea partly surrounded by land   peninsula   island   harbor   gulf   Half-n-half Clue   6. sloping, sandy or pebbly, shore of a body of water   valley   harbor   beach   cape   Half-n-half Clue   7. low land between hills or mountains   beach   valley   tributary   archipelago   Half-n-half Clue