Dynamic Planet Module Review

Bending of a wave due to changes in its velocity Convection Reflection Subduction Refraction

Structure a scientist builds in his or her mind Physical model Conceptual model Mathematical model Numerical Model

Fastest kind of seismic wave P wave S wave R wave Surface wave

Model a scientist constructs in his or her mind Physical model Conceptual model Mathematical model Numerical model

Process that consumes ocean crust where two plates meet Subduction Trench Convection Refraction

Seismic wave that cannot travel through liquids P wave S wave R wave Tsunami

The oceanic crust is ______ than the continental crust Thicker Thinner Less dense Smaller in area

The Earth’s crust and mantle: Have the same chemical composition Have the same thickness Have different densities Have no boundary between them

The part of the Earth that is made of high-temperature liquid iron Outer core Inner core Mantle lithosphere

Mantle ___ plays an important role in moving Earth’s plates Conduction Convection Refraction Liquefaction

New crust is formed and spreads apart at Transform fault boundaries Convergent plate boundaries Subduction zones Divergent plate boundaries

One plate slides past another horizontally at: Transform fault boundaries Convergent plate boundaries Subduction zones Divergent plate boundaries

The __ of an earthquake is the point on the Earth’s surface above the ________ Epicenter/focus Focus/epicenter Refraction/epicen-ter Refraction/focus

An earthquake on the sea floor can produce: Magma Subduction Tsunamis Tornadoes

What name did Alfred Wegener give to his theory of horizontal movement of the Earth’s crust? Continental drift Isostasy Plate tectonics Sea-floor spreading

What name did Wegener give to his proposed single supercontinent? Eurasia Gondwanaland Panthalassa Pangea

Which of the following kinds of evidence did Wegener use to support his theory? Distributions of fossil plants and animals in the ocean Geographic fit of the continents Pattern of earthquakes and volcanoes along the “Ring of Fire” All of the above

Why did most scientists of the 1920’s reject Wegener’s theory? The concentration of continents in the Northern Hemisphere Lack of a mechanism for continents to plow through oceanic crust The Earth was thought to be too young for such movements Wegener was not a geologist by training and so his ideas were ignored

The San Andreas Fault in southern California is an example of a boundary between: Two plates that are colliding Two plates that are moving apart Two plates that are sliding past one another Continental lithosphere and oceanic lithosphere

According to plate tectonics, new lithosphere is added to plates at a boundary between: Two plates that are no longer moving Two plates that are moving apart Two plates that are sliding past one another Continental lithosphere and oceanic lithosphere

What is the term used for molten rock within the Earth? granite pumice lava magma

The Earth’s lithospheric plates move at speeds that average: 5 meters per year 5 centimeters per year 50 meters per year 5 kilometers per year

Most earthquakes occur: In the middle of plates At the poles Very deep within the Earth Along plate boundaries

Structure a scientist builds to represent something else Computer model Conceptual model Mathematical model Physical model