Unit 4 Preview: Big Geosphere

Which of the following causes Earth's tectonic plates to move?

• Energy from the Sun
• Magnetic Pole Reversal
• Convection currents in the mantle
• Faults in Mountain Ranges

What type of plate boundary is this?

• Plate
• Divergent
• Convergent
• Transform

A divergent boundary occurs when plates ....

• Pull apart
• Come together
• Slide past each other
• subducting

What geologic feature/event would you most likely to find at a divergent boundary between two pieces of oceanic crust?

• Rift Valley
• Mid-Ocean Ridge
• Island Arc
• Flat land

What geologic feature/event would you most likely to find at a convergent boundary between two pieces of continental crust?

• Volcano
• Mountain
• Rift
• Island Arc

This is the plastic layer of the mantle on which pieces of the lithosphere move.

• Lithosphere
• Asthenosphere
• Mesosphere
• Crust

This layer is divided into pieces called tectonic plates.

• Mesosphere
• Asthenosphere
• Mantle
• Lithosphere

The diagram shows what can occur when two continental plates collide.Which characteristic of the Indian Plate explains why it moves under the Eurasian Plate?

• It is larger.
• It is denser.
• It is molten.
• It is younger.

Where would the oldest rock be found?

• L
• M
• N
• O

How is it possible for new crust to be formed without increasing the surface area of the Earth?

• Crust is destroyed at the same time it is created
• New crust is underwater where it sinks
• New crust breaks more easily than old crust