Standard 7 Review

Front

What is the location of the youngest seafloor crust?

Back

The youngest seafloor crust is located closest to the mid-ocean ridges.

Front

Where are the oldest rocks on the seafloor found?

Back

The oldest rocks on the seafloor are located farthest from the mid-ocean ridge.

Front

What do iron bits (magnetite) inside of the rock align with?

Back

Iron bits (magnetite) align with the direction of Earth's magnetic poles.

Front

Which Hawaiian island is the oldest?

Back

Oahu is the oldest island, as it is further from the hotspot.

Front

Where are the youngest rocks on the seafloor located?

Back

The youngest rocks on the seafloor are located closest to the mid-ocean ridge.

Front

What is a mid-ocean ridge?

Back

A mid-ocean ridge is an underwater mountain range formed by plate tectonics.

Front

What is magnetic striping?

Back

Magnetic striping refers to the pattern of magnetic orientation in rocks on the ocean floor, indicating past magnetic pole reversals.

Front

What is the significance of the hotspot in relation to Hawaiian islands?

Back

The hotspot is a stationary source of magma that creates volcanic islands as tectonic plates move over it.

Front

How does the age of seafloor rocks relate to mid-ocean ridges?

Back

Seafloor rocks are younger near mid-ocean ridges and older as you move away from them.

Front

What is the process of seafloor spreading?

Back

Seafloor spreading is the process by which new oceanic crust is formed at mid-ocean ridges and moves away from the ridge.