Continental Drift Notes

The continents fit together like a puzzle and fossils aligned across continents

The continents were always stationary

The continents were formed by volcanic activity

The continents were separated by oceans

Puzzle-like fit of continents

Fossil records

Geologic records

All of the above

He could not explain how, why, or when the continents moved

He did not have fossil evidence

He did not know about mid-ocean ridges

He thought continents were stationary

The ocean floor is shrinking due to earthquakes.

Less dense, basaltic magma rises and spreads the seafloor apart.

The continents are moving closer together.

Mountains are formed by volcanic eruptions.

By discovering new continents under the ocean.

By finding the oldest rocks near the mid-ocean ridge.

By showing that the youngest rocks are at the mid-ocean ridge and get older outward.

By proving that the ocean floor never changes.

The formation of new oceanic crust at mid-ocean ridges and its outward movement on either side

The gradual movement of continents across the earth's surface

The remains or impression of prehistoric organisms in rock

A theory explaining the structure of the earth's crust