1. Give the different evidences of the theory proposed by Alfred Wegener? 2. What is the difference between continental drift theory and seafloor spreading.

1. Give the different evidences of the theory proposed by Alfred Wegener? 2. What is the difference between continental drift theory and seafloor spreading.

Evidences of Alfred Wegener's Continental Drift Theory:

a. Matching Coastlines: Similar geological features and matching coastlines on continents separated by oceans, suggesting they were once connected.

b. Fossil Evidence: Similar fossils found on continents now separated by oceans, indicating a shared geological history.

c. Rock Formations: Similar rock formations and mountain ranges on different continents that align when continents are brought together.

d. Paleoclimatic Evidence: Evidence of past climates, such as glacial deposits in areas that are currently distant from polar regions.

Difference between Continental Drift Theory and Seafloor Spreading:

• Continental Drift Theory: Proposed by Wegener, this theory suggests that continents were once part of a single supercontinent (Pangaea) and have drifted apart over time. It explains the movement of continents relative to each other.
• Seafloor Spreading: Proposed later and supported by Harry Hess, this theory focuses on the creation of new oceanic crust at mid-ocean ridges. It suggests that as new crust forms, it pushes older crust away, leading to the spreading of the seafloor. While related to continental drift, seafloor spreading is more specific to the oceanic crust's movement.