Assigment - 10.Quiz:Earth's Dynamic Internal Structure

Match each boundary with its description

1This plate boundary usually forms mountains due to colliding plates. 3divergentThis plate boundary can cause earthquakes from plates rubbing along side each other. 2transformThis plate boundary creates new land, like the seafloor at the mid-atlantic ridge.

Match the term with the correct definition. 1.subduction 2.mid-ocean ridge 3.seafloor spreading

2 a mountain range that is formed by seams that run along the ocean floors 1 the process in which a deep part of the ocean is formed by the intersection of an oceanic plate and continental plate 3 the process that occurs when new oceanic crust is formed through volcanic activity

Match the layer of the earth with its best description.

3just outside of the outer core 5 rigid surface of Earth 1of solid iron 6made of large plates that move 4layer that includes the asthenosphere 7plastic portion of the upper mantle of the earth 2dense liquid of iron and sulfur

_____ is a place where the crust of the lithosphere has fractured.

A fault

_____ is the scientist who first proposed the existence of Pangaea and Panthalassa.

Alfred Wegener

What evidence suggests the continents were once all together but then drifted apart?

Mountain ranges in North America match up with those along the European coastline. Similar fossils of plants and animals are found on widely separated continents. Remains of tropical plants have been found in Antarctica. Matching jigsaw puzzle coastlines exist, particularly with the west coast of Africa and east coast of South America.

The seven continents used to be one huge supercontinent called

Pangaea

A well-known transform boundary found in California is the _____.

San Andreas fault

Which of the following options is not a resulting situation of two plates colliding at a convergent boundary?

The two plates grab onto each other and lock in place.

Volcanoes are usually formed as a result of _____.

a divergent boundary, where at least one of the plates is oceanic

The Earth's crustal plates move due to _____ currents.

convection

During mantle convection, heat from the earth's core causes material in the mantle to expand and move upward. When it reaches the top, it _____.

cools, moves to the side, and sinks, making a circular pattern

Which layer of Earth is like the shell of an egg?

crust

The Mid-Atlantic Oceanic Ridge is an example of a _____ boundary.

divergent

A __________ uses seismometers to measure shear waves (S waves) caused by earthquakes.

gemologist

Plate tectonics suggests that the -----loats and moves on the

lithosphere asthenosphere

The ability of solid rock to flow is called _____.

plasticity

The theory of _____ suggests that the crust of the earth moves about on the upper mantle.

plate tectonics

The ultimate cause of plate movements is ___________.

the heating of the Earth

Earthquakes are especially associated with _____ boundaries.

transform

What is the main evidence for the structure of the Earth that occur from the generation of an earthquake?

waves

Restless tectonic plates move (shift) between one and fifteen centimeters per __________.

year