Plate Tectonics

What do you call the supercontinent that was here 225 million years ago?

• Laurasia

• United States

• Gondwanaland

• Pangaea

Which is the correct sequence of the layers of the Earth from deepest?

• Crust, mantle, outer core, inner core

• Crust, inner core, mantle, outer core

• inner core, outer core, mantle, crust

• outer core, mantle, inner core, crust

To which of the following is convection of the Earth’s mantle most directly related?

• erosion of the Earth’s crust

• composition of the Earth’s core

• tectonic plate motion

• ocean waves

Which structure can form as a result of a divergent plate boundary?

• A continental volcanic arc, due to the collision of two plates

• A continental mountain, due to the collision of two plates

• A mid-ocean ridge, due to the separation of two plates

• An ocean trench, due to the separation of two plates

The three types of volcanoes are

• Shield, flat, stratovolcano

• stratovolcano, tall, flat

• Shield, composite, cinder

• scoria, tall, stratovolcano

The process of one plate, either oceanic or continental, sliding underneath a denser plate is known as

• Continental convergence

• Subduction

• transform boundary

• continental divergence

The Pacific Ring of Fire formed due to

• The Pacific plate diverging from the surrounding plates

• The subduction of the Pacific plate under nearby plates

• The North American plate sliding under the Eurasian plate

• The subduction of nearby plates underneath the Pacific Plate

The Himalayan Mountains are a result of

• Continental divergence

• Continental-oceanic convergence

• Continental convergence

• transform boundary

The Pacific Ring of Fire contains _______ of the world’s volcanoes.

• 30%

• 50%

• 75%

• 100%

Scientists are studying a graph showing the time differences between the seismic P-waves and the seismic S-waves as they travel through Earth. Which information can they learn from the graph?

• The magnitude of an earthquake

• The duration of an earthquake

• the epicenter of an earthquake

• the intensity of an earthquake