Question

which of the following observations is not explained by the theory of plate tectonics? a most earthquakes occur along plate boundaries. b most volcanoes occur along plate boundaries. c the atlantic ocean is getting wider over time. d ice in the arctic ocean melts during the summer.

Explanation:

The theory of plate tectonics explains geological phenomena related to the movement of Earth's lithospheric plates. Earthquakes (A), volcanoes (B), and the widening of the Atlantic Ocean (C) are all related to plate - movement processes. However, the melting of ice in the Arctic Ocean during summer is mainly due to seasonal changes in solar radiation and temperature, not plate tectonics.

Answer:

D. Ice in the Arctic Ocean melts during the summer