APES Unit 4 review

What is the Earth's core primarily composed of?

• Magma and lava

• Water and ice

• Solid nickel, iron, and radioactive elements

• Granite and basalt

What keeps the Earth's mantle in a liquid state?

• The rotation of the Earth

• Intense heat from the core

• The pressure from the lithosphere

• Solar radiation

What is the asthenosphere?

• The very outer layer of the lithosphere

• A solid, flexible outer layer of the mantle, beneath the lithosphere

• The innermost layer of the Earth

• A layer of rock floating on top of the mantle

What is the lithosphere made up of?

• A single, unbroken shell of rock

• A thin, brittle layer of rock broken up into tectonic plates

• A dense mass of solid nickel and iron

• A liquid layer of magma

Which layer of the Earth is described as the "very outer layer of the lithosphere, earth's surface"?

• Core

• Mantle

• Asthenosphere

• Crust

What geological features are formed at a divergent plate boundary?

• Mountains and island arcs

• Earthquakes and volcanoes

• Mid-oceanic ridges, volcanoes, seafloor spreading, and rift valleys

• Subduction zones and deep ocean trenches

What occurs at a convergent plate boundary?

• Plates move away from each other

• Plates slide past each other in opposite directions

• One plate is forced beneath another plate

• Plates merge into a single landmass

Which of the following is a result of plate movement at transform fault boundaries?

• Formation of rift valleys

• Occurrence of earthquakes

• Seafloor spreading

• Subduction of one plate beneath another

What is the primary movement of plates at a divergent plate boundary?

• Plates move towards each other

• Plates slide past each other

• Plates move away from each other

• Plates collide and crumple upwards

What is subduction and where does it typically occur?

• The sliding of plates past each other at transform fault boundaries

• The movement of plates away from each other at divergent boundaries

• The process of one plate being forced beneath another at convergent boundaries

• The merging of two plates into a single landmass