GEOLOGY

Detailed explanation-1: -Seafloor spreading caused the Arabian and African plates to rift apart. The Indian Ocean flooded the rift valley between the continents, creating the Red Sea.

Detailed explanation-2: -The Afar region in Northern Ethiopia is the centre of a “Y” shaped rift system, where the continental lithosphere is being stretched and is splitting. The Arabian Plate is rifting away from the African plate along an active divergent ridge system, to form the Red Sea and Gulf of Aden.

Detailed explanation-3: -Answer and Explanation: The type of tectonic plate boundary that occurs between the African Plate and the Arabian Plate is a divergent plate boundary. As the African Plate and the Arabian Plate move in opposite directions, they create a large rift between them.

Detailed explanation-4: -A divergent boundary marks two plates that are moving apart from each other. Examples of divergent boundaries include: the boundary between the African Plate and the Arabian Plate in the Red Sea.

Detailed explanation-5: -The African plate boundary consists of both convergent and divergent boundaries. To the west, the African Plate lies adjacent to the South American Plate. Because these two plates are moving away from each other, this represents a divergent plate boundary.