Continental Drift

Alfred Wegener's Continental Drift Theory states that...

• there was once an original land mass that was 1/2 the size of all the current continents.

• there was once an original land mass that was 3 times the size of today's continents and there was only a small amount of water.

• there was once an original land mass that was composed of all the continents.

• for every action, there is an opposite and equal reaction.

What was one (1) piece of evidence for the Continental Drift Theory?

• There were nearly identical rock layers on continents that would have fit together.

• Alfred Wegener asked people on other continents what they thought about his theory.

• All the plants and animals in all parts of the world were exactly the same.

• The fossils on other continents were very different.

Princeton University geology professor, Harry Hess, helped prove Alfred Wegener's Continental Drift theory with the discovery of what scientific process?

• Seashore Shelling

• Seafloor Spreading

• Seafloor Contractions

• Sea Life Extinction

Harry Hess proposed that...

• the ocean floors move 500 meters per year.

• the ocean floors never move.

• the ocean floors move like invisible tractor beams found on the USS Enterprise and carry the continents with them.

• the ocean floors move like conveyor belts and carry the continents with them.

Because of huge advances in technology, ocean floors could be mapped by the use of _________________________ .

• sound waves

• x-rays

• super sonic vision

• microwaves

By bouncing sound waves off of the ocean floor, scientists discovered...

• that the ocean floor is an endless abyss.

• in the middle of the Atlantic, Pacific, and other oceans around the world there are mountains and rift valleys.

• in the middle of the Atlantic, Pacific, and other oceans around the world there are a variety of animals that cause seafloor spreading.

• in the middle of the Atlantic, Pacific, and other oceans around the world there are alien spaceships.

For this question, you MUST PICK 3 ANSWERS:

What evidence is there to support Seafloor Spreading?

• The temperature of drilled samples increases the closer to the mid-ocean ridges indicating that super hot magma exits under them.

• The youngest rocks are found along the mid-ocean ridge and they become increasingly older the farther away from the ridge.

• Alien spacecraft has been found on the ocean floors and data has been retrieved from them to support seafloor spreading.

• Basalt on the ocean floor contains iron rich rock that is magnetized and aligns itself with Earth's magnetic poles, much like a compass.

• Using and comparing pictures from the ocean floor from hundreds of years ago, scientists are able to measure the distance the tectonic plates have moved.

What does this image represent?

• Mid-Ocean Ridge

• Mountains on Land

• Mid-Continent Ridge

• Volcanos

What does this image represent?

• Mid-Ocean Ridges

• The Super Continent known as Pangea

• Mid-Continent Ridges

• A Current Continental Map

What does this gif represent?

• How our continents are going to collide in the future.

• The Continent known as Pandora

• Continental Drift

• Continental Explosion