What Hawaiian islands were formed by constructive process?

The Hawaiian Islands are a chain of volcanic islands in the central Pacific Ocean. They were formed by the constructive process of volcanism, which is the process by which magma from the Earth's mantle rises to the surface and erupts, forming new land. The Hawaiian Islands were formed over millions of years as the Pacific Plate moved over a hotspot, or a stationary spot where magma is rising from the mantle. As the plate moved, new volcanoes formed on the sea floor and grew until they reached the surface, forming islands. The oldest Hawaiian island, Kauai, is about 5.1 million years old, while the youngest island, Hawaii, is only about 400,000 years old.