Plate Tectonics and Pangaea 20-21

The edge of one plate sinking beneath the edge of another plate is a process called ___________.

• tectonics

• fault

• eruption

• subduction

Who is the scientist that is credited with developing the theory of Continental Drift?

• Hess

• Wegener

• Ptolemy

• Copernicus

What causes mountains to form?

• two oceanic plates spreading at a divergent boundary

• two oceanic plates colliding at a convergent boundary

• two continental plates spreading at a divergent boundary

• two continental plates colliding at a convergent boundary

Which of these statements is correct?

• The identification of silica sand on Earth's beaches is strong evidence that Earth has changed over time

• The presence of distinct layers in Earth's surface is evidence that Earth's surface has not been changing over time.

• Fossilized plankton, clams, and fish found on the tops of mountains are evidence that Earth has changed over time.

• Fossils of similar species found on different continents are strong evidence that Earth has not changed over time.

The crevice along the San Andreas fault is most likely caused by which event?

• Earthquake

• Hurricane

• Tornado

• Sinkhole

Mountains and valleys are some of the features found in the layer of rock at Earth's surface called the

• outer core

• lithosphere

• inner mantle

• hydrosphere

What is the most likely reason that the bones of a Mesosaurus are found on the eastern coast of South America and on the western coast of Africa?

• flooding

• geographic location

• plate tectonics

• analogous structures

Crust is neither formed nor destroyed along which type of boundary?

• convergent

• transform

• collisional

• subduction

Large pieces of lithosphere that move on top of the asthenosphere are called

• plate margins

• mantle pieces

• tectonic plates

• subduction zones

The heating and cooling of Earth's mantle causes

• convection currents which move the plates on the outer core.

• conduction currents which move the plates on the outer core.

• convection currents which move the lithospheric plates.

• conduction currents which move the lithospheric plates.