Question

1. many landforms develop slowly but some develop very quickly. which type of florida landform develops rapidly? sc.6. e.6.2

a. delta b. coastline c. sinkhole d. mountain

1. mrs. smith takes her class to st. george island, a barrier island formed by the apalachicola river delta. th students notice that there are several pebbles on the beach that are round and smooth. which process most likely caused the pebbles to become round and smooth? sc.6. e.6.2

a. the shape of the pebbles if a result of weathering and deposition
b. the shape of the pebbles is the result of glacial deposition
c. the shape of the pebbles is the result of acid rain
d. the shape of the pebbles is the result of being rolled down the apalachicola
answer the following questions. #5 - 6

1. look at the pictures below.

which of the following correctly identifies and explains the picture that shows the oldest mountains? sc.6. e.6
a. picture a, because they have been flattened by millions of years of erosion.
b. picture a, because rows indicate geologically older mountains.
c. picture b, because they are jagged at the top due to years of weathering.
d. picture b, because they are taller and have been growing for more years.

Explanation:

• Question 3:
• Delta: Forms over time as sediment is deposited at a river's mouth.
• Coastline: Changes gradually due to erosion and deposition.
• Sinkhole: Can form suddenly when underground cavities collapse.
• Mountain: Forms over long geological periods through tectonic activity.
• Question 4:
• Weathering and deposition: Weathering (e.g., abrasion from water and sand) smooths pebbles, and deposition just drops them. Rolling (a form of weathering - abrasion) by water (like in a river) makes them round.
• Glacial deposition: Glaciers deposit unsorted sediments; pebbles would not be smooth like this from just deposition.
• Acid rain: Affects rocks chemically, not shaping pebbles to be round and smooth.
• Question 5:
• Older mountains are more eroded. Erosion (wind, water, ice) wears down peaks over millions of years. Picture A shows flatter mountains (eroded), while Picture B has sharp peaks (less eroded, younger). Rows don't indicate age. Taller doesn't mean older (newer mountains can be tall if uplift is recent). Jagged peaks are from less erosion (younger).

Answer:

• Question 3: c. Sinkhole
• Question 4: d. The shape of the pebbles is the result of being rolled down the Apalachicola (assuming rolling implies abrasion - a weathering process that smooths them)
• Question 5: A. Picture A, because they have been flattened by millions of years of erosion.