11/18 Science

Which statement explains the relationship between the density of a material and its movement in Earth’s interior?

• Cooler materials move from Earth’s mantle to the lithosphere.

• Cooler materials are highly dense, causing them to sink to the outer core.

• Warmer materials sink to the mantle because their density slowly decreases.

• Warmer materials have a high density, causing them to rise to Earth’s surface.

Which region of Earth did John Tuzo Wilson believe was broken into plates?

• lithosphere

• outer core

• lower mantle

• asthenosphere

Into which layer of the Earth do plate boundaries extend?

• outer core

• lithosphere

• lower mantle

• asthenosphere

During the process of mountain building, earthquakes sometimes occur along continental-continental convergent boundaries. Which statement best describes the motion of the plates along these boundaries that causes the earthquakes?

• The plates push apart from each other with no subduction.

• Subduction occurs with the less-dense plate sinking below the other plate.

• Subduction occurs with the more-dense plate sinking below the other plate.

• The plates smash together with no subduction.

Which statement describes the process of subduction?

• Convection currents cause two plates to move away from each other.

• A plate slides beneath another plate due to convection currents and gravity. 

• Materials are heated and transferred within Earth’s interior by density.

• Heat cycles in the mantle cause plates to constantly move.

    __________       describes the large scale movement of the Earth’s lithosphere.

• Crust Displacement

• Mantle Movement

• Plate Tectonic

• None

This scientist was the first to develop the idea of continental drift.

• Wegener

• Einstein

• Copernicus

• Hawking

Tectonic Plates are the pieces of the ____________ that move around on top of the asthenosphere.

• Lithosphere

• Mantle

• Hard Rocks

• Both B and C

What are the mechanisms that have been proposed to explain the movement of Earth’s tectonic plates?

• slab pull and sea-floor spreading

• mantle convection and continental drift

• sea-floor spreading and continental drift

• mantle convection, ridge push, and slab pull

The spread of molten rock comes up from through cracks and creates new oceanic crust

• Divergent Boundary

• Convergent Boundary

• Transform Boundary

• None