Field, laboratory, and library manual in physical geography . es this arch possible ? What condition of sea bottom is necessary to produce break-ers ? (See Topic 82, Waves, p. 35.) Judging from the fact thatbut one breaker appears on the shore in Fig. 32, would youthink the sea is deep or shallow ? Is this characteristic of strongor weak coasts? Which part of the bay in Fig. 31 has thestrongest coast? Which the weakest? This bay is what the 150 PHYSICAL GEOGRAPHY MANUAL books sometimes call a pocket beach. What can you see that isappropriate in this name ? It is sometimes called a crescent bea
Field, laboratory, and library manual in physical geography . es this arch possible ? What condition of sea bottom is necessary to produce break-ers ? (See Topic 82, Waves, p. 35.) Judging from the fact thatbut one breaker appears on the shore in Fig. 32, would youthink the sea is deep or shallow ? Is this characteristic of strongor weak coasts? Which part of the bay in Fig. 31 has thestrongest coast? Which the weakest? This bay is what the 150 PHYSICAL GEOGRAPHY MANUAL books sometimes call a pocket beach. What can you see that isappropriate in this name ? It is sometimes called a crescent beach. Is this nameequally appropriate?What difference wouldyou expect to find inthe size and the shapeof the rock waste atthe headland and mid-way between the twoheadlands ? If possible visit thecoast. Observe seacliffs, headlands, bowl-ders, pebbles, sand,beaches, sea caves, bars,spits, marshes, sea-weed, and other lifealong the shore, andanything else that youconsider worthy ofnote. Make a map ofthe region which youhave visited and letIllustrate with photo-. Fig. 35. Map of Sand Reefs off the Coastof North Carolina your description be as full as possible,graphs or drawings whenever possible. EXERCISE LXBARRIER BEACHES Locate Atlantic City on a map of the United States. Howfar and in what direction is it from New York city ? Refer tothe Atlantic City () sheet. (Topographic map of the UnitedStates Geological Survey.) How much of the region shownon this sheet is mainland ? How high is it above sea level ?Describe the barrier beaches, giving their distance from the BARRIER BEACHES 151 mainland, direction of trend with reference to the mainland,height above sea level, width, and general shape. Comparethem, in all respects named above, with the barrier beaches andbars represented on the map of the Atlantic coast from BeachHaven to Sandy Hook. (See the large ) Also make a com-parison of these beaches and the bars or reefs represented onthe maps of the coastsof North Carolina
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