2nd Quarter Benchmark/Final Review 31 questions

Front

What is seafloor spreading?

Back

Seafloor spreading is the process by which new oceanic crust is formed at mid-ocean ridges as magma rises from the mantle and solidifies, causing the ocean floor to expand.

Front

What type of plate boundary is associated with seafloor spreading?

Back

Divergent plate boundary.

Front

What happens to oceanic crust at a mid-ocean ridge?

Back

Oceanic crust spreads, releasing magma, which cools and forms the ridge.

Front

How can you identify steep areas on a topographic map?

Back

Steep areas are indicated where contour lines are closest together.

Front

What is a topographic map?

Back

A topographic map is a detailed and accurate graphic representation of cultural and natural features on the ground, showing elevation changes through contour lines.

Front

What does it mean when contour lines are far apart on a topographic map?

Back

When contour lines are far apart, it indicates a gentle slope or flat terrain.

Front

What is the significance of contour lines bending on a topographic map?

Back

Bending contour lines can indicate a change in elevation, such as a hill or valley.

Front

What is the role of magma in the formation of mid-ocean ridges?

Back

Magma rises from the mantle, cools, and solidifies to form new oceanic crust at mid-ocean ridges.

Front

What is the relationship between oceanic crust and Earth's magnetic field?

Back

Earth's magnetic field influences the orientation of magnetic minerals in magma, which can create patterns of magnetic stripes on either side of mid-ocean ridges.

Front

What is a convergent plate boundary?

Back

A convergent plate boundary is where two tectonic plates collide, often leading to subduction or mountain formation.