Video & Questions

What theory explains the structure and behavior of Earth?

• Theory of Quantum Mechanics

• Theory of Plate Tectonics

• Theory of Relativity

• Theory of Evolution

Who proposed the idea of continental drift in 1912?

• Robert Dietz

• Alfred Wegener

• Harry Hess

• Marie Tharp

What did Alfred Wegener use as evidence for his hypothesis?

• Distribution of rivers

• Distribution of deserts

• Spatial distribution of fossils

• Patterns of wind erosion

What did the first physiographic map of the Atlantic ocean floor reveal?

• A vast mid-Atlantic mountain spine

• An extensive coral reef system

• A large singular trench

• A flat featureless plain

What did Harry Hess propose about the seafloor?

• It was completely static

• It was shrinking

• It was expanding like a giant conveyor belt

• It was covered in large forests

What records the Earth's magnetic field reversals?

• Rocks containing iron

• Magma

• Atmospheric patterns

• Ocean water currents

What is the name of the single supercontinent proposed by Wegener?

• Gondwana

• Eurasia

• Atlantis

• Pangaea

What type of boundary is the San Andreas Fault an example of?

• Subduction zone

• Transform boundary

• Convergent plate boundary

• Divergent plate boundary

What happens at a subduction zone?

• One plate is forced under another

• Plates slide past each other

• Plates merge into a single plate

• Plates move away from each other

What is the significance of the Pacific Ring of Fire?

• It is the hottest part of the Earth's core

• It is where the majority of the Earth's volcanoes and earthquakes occur

• It is a region free from tectonic activity

• It is the only place on Earth where new land is formed