THE HYPOTHESIS: Many geologic processes result in the deposition of rocky materials. During a given episode of deposition, some areas may receive more materials than others ('differential deposition'). Deposition raises the elevation of the land. At the end of a depositional event, the final elevation of the land in a given place depends upon the initial elevation plus the thickness of deposited materials. Differential deposition may result in an uneven land surface characterized by hills and valleys.
 | PRESS THE BUTTON TO REVIEW THE RESULTS OF DIFFERENTIAL DEPOSITION. |  |
TESTING THE HYPOTHESIS: If the hypothesis is correct for landforms of the NY City region, then certain predictions may be made. For example, it may be predicted that these areas will display features indicative of depositional processes, such as characteristic materials or shapes and distribution of landforms.
If this prediction is fulfilled, then the hypothesis is supported and strengthened. If the prediction is not bourne out, then the hypothesis is contradicted and weakened.
RETURN TO THE TESTING HYPOTHESES MENU AND PERFORM THE TESTS OF THE DIFFERENTIAL DEPOSITION HYPOTHESIS.
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