Layers of the Earth and Continental Drift

Who is the person credited with developing the theory of continental drift?

• Harry Hess
• Galileo
• Alfred Wegener
• Newton

Even with the multiple pieces of evidence, why was Wegener's continental drift idea still rejected by scientists?

• He couldn't clearly communicate his evidence ideas when speaking.

• There wasn't enough fossil evidence to support his idea - island hopping sounded more accurate.

• He didn't have a mechanism for what caused the continents to move away from one another.

• Glacial striations were found on multiple continents so it was inaccurate evidence.

Name the boundary

• convergent boundary
• divergent boundary
• transform boundary
• sergent boundary

Name the boundary

• convergent boundary
• divergent boundary
• transform boundary
• sergent boundary

What type of plate boundary is located at the San Andreas Fault?

• Convergent

• Divergent

• Transform

• Subduction

This is the name for the chain of volcanoes located around the edges of the Pacific Plate.

• Circle of Fire

• Ring of Lava

• Ring of Fire

• Circle of Magma

What kind of plate boundary is shown here?

• divergent
• convergent
• transform
• subducting

Convergent boundaries undergo _______________stress and have a _______________fault.

• Tension, Reverse

• Compression, Reverse

• Shearing, Reverse

Divergent boundaries undergo _____________stress and ____________fault.

• Tension, Normal Fault

• Shearing, Normal Fault

• Compression, Normal Fault

When Harry Hess was working in the Navy, he used a device to help determine the depth of the ocean floor. This ____ also allowed him to learn more about the bottom of the sea and guided his discovery that helped explain Wegener’s theory.

• sonar

• seismometer

• cave depth sensor

• echolocator