Exploring Earth's Layers and Plate Tectonics

Which layer of the Earth is composed of both the crust and the uppermost part of the mantle?

• Lithosphere

• Asthenosphere

• Outer Core

• Inner Core

What is the primary mechanism for the movement of crustal plates?

• Slab pull

• Ridge push

• Convection in the asthenosphere

• Subduction

Which of the following best describes the outer core of the Earth?

• Solid iron and nickel

• Liquid iron and nickel

• Solid silicate minerals

• Liquid silicate minerals

What is the term for the process where one tectonic plate is forced under another?

• Divergence

• Convergence

• Subduction

• Transformation

Which type of plate boundary interaction is associated with the formation of mid-ocean ridges?

• Divergent

• Convergent

• Transform

• Subduction

What is the main driving force behind slab pull?

• Gravity

• Convection currents

• Ridge push

• Earthquakes

Which type of plate boundary interaction is most likely to cause earthquakes?

• Divergent

• Convergent

• Transform

• Subduction

What landform is typically created at a convergent plate boundary where an oceanic plate meets a continental plate?

• Mid-ocean ridge

• Trench

• Rift valley

• Mountain range

How does ridge push contribute to plate movement?

• By pulling plates apart

• By pushing plates towards each other

• By pushing plates away from mid-ocean ridges

• By causing subduction

What is the significance of density in plate tectonics?

• It determines the speed of plate movement

• It affects the buoyancy of tectonic plates

• It influences the temperature of the mantle

• It controls the formation of magma